Biology:Thrips

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Short description: Order of insects

Thrips
Temporal range: 299–0 Ma
Permian – recent
Thysanoptera.jpg
Winged and wingless forms
Scientific classification e
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
(unranked): Eumetabola
(unranked): Paraneoptera
Order: Thysanoptera
Haliday, 1836
Suborders & Families

Terebrantia

Adiheterothripidae
Aeolothripidae
Fauriellidae
† Hemithripidae
Heterothripidae
† Jezzinothripidae
† Karataothripidae
Melanthripidae
Merothripidae
† Scudderothripidae
Stenurothripidae
Thripidae
† Triassothripidae
Uzelothripidae

Tubulifera

Phlaeothripidae
† Rohrthripidae
Synonyms

Physopoda[1]

Thrips (order Thysanoptera) are minute (mostly 1 mm (0.039 in) long or less), slender insects with fringed wings and unique asymmetrical mouthparts. Entomologists have described approximately 7,700 species. They fly only weakly and their feathery wings are unsuitable for conventional flight; instead, thrips exploit an unusual mechanism, clap and fling, to create lift using an unsteady circulation pattern with transient vortices near the wings.

Thrips are a functionally diverse group, with nearly half of the known species being fungivorous.[2] A small proportion of species of thrips are serious pests of commercially important crops.[3] Some of these serve as vectors for over 20 viruses that cause plant disease, especially the Tospoviruses. Many flower-dwelling species bring benefits as pollinators,[4] with some predatory thrips feeding on small insects or mites.[5] In the right conditions, such as in greenhouses, invasive species can exponentially increase in population size and form large swarms because of a lack of natural predators coupled with their ability to reproduce asexually, making them destructive to crops. Due to their cryptic nature, thrips may aggregate in household objects such as furniture, bedding and computer monitors – in the latter case by forcing their way in between the LCD and its glass covering.[6] Their identification to species by standard morphological characteristics is often challenging.

Naming and etymology

The first recorded mention of thrips dates from the 17th century, and a sketch was made by Philippo Bonanni, a Catholic priest, in 1691. Swedish entomologist Baron Charles De Geer described two species in the genus Physapus in 1744, and Linnaeus in 1746 added a third species and named this group of insects Thrips. In 1836 the Irish entomologist Alexander Henry Haliday described 41 species in 11 genera and proposed the order name of Thysanoptera. The first monograph on the group was published in 1895 by Heinrich Uzel,[7] who is regarded by Fedor et al. as the father of Thysanoptera studies.[8]

The generic and English name thrips is a direct transliteration of the Ancient Greek word θρίψ, thrips, meaning "woodworm".[9] Like some other animal-names (such as sheep, deer, and moose) in English the word "thrips" expresses both the singular and plural, so there may be many thrips or a single thrips. Other common names for thrips include thunderflies, thunderbugs, storm flies, thunderblights, storm bugs, corn fleas, corn flies, corn lice, freckle bugs, harvest bugs, and physopods.[10][11][12] The older group name "physopoda" references the bladder-like tips to the tarsi of the legs. The name of the order, Thysanoptera, is constructed from the ancient Greek words θύσανος, thysanos, "tassel or fringe", and πτερόν, pteron, "wing", with reference to the insects' fringed wings.[13][14][15]

Morphology

Typical Tubulifera thrips: the feathery wings are unsuitable for the leading edge vortex flight of most other insects, but support clap and fling flight.
Leaf suffering from thrips

Thrips are small hemimetabolic insects with a distinctive cigar-shaped body plan. They are elongated with transversely constricted bodies. They range in size from 0.5 to 14 mm (0.02 to 0.55 in) in length for the larger predatory thrips, but most thrips are about 1 mm in length. Flight-capable thrips have two similar, strap-like pairs of wings with a fringe of bristles. The wings are folded back over the body at rest. Their legs usually end in two tarsal segments with a bladder-like structure known as an "arolium" at the pretarsus. This structure can be everted by means of hemolymph pressure, enabling the insect to walk on vertical surfaces.[16][17] They have compound eyes consisting of a small number of ommatidia and three ocelli or simple eyes on the head.[18]

Asymmetric mouthparts of Heliothrips

Thrips have asymmetrical mouthparts unique to the group. Unlike the Hemiptera (true bugs), the right mandible of thrips is reduced and vestigial – and in some species completely absent.[19] The left mandible is used briefly to cut into the food plant; saliva is injected and the maxillary stylets, which form a tube, are then inserted and the semi-digested food pumped from ruptured cells. This process leaves cells destroyed or collapsed, and a distinctive silvery or bronze scarring on the surfaces of the stems or leaves where the thrips have fed.[20]

Thysanoptera is divided into two suborders, Terebrantia and Tubulifera; these can be distinguished by morphological, behavioral, and developmental characteristics. Tubulifera consists of a single family, Phlaeothripidae; members can be identified by their characteristic tube-shaped apical abdominal segment, egg-laying atop the surface of leaves, and three "pupal" stages. In the Phlaeothripidae, the males are often larger than females and a range of sizes may be found within a population. The largest recorded phlaeothripid species is about 14 mm long. Females of the eight families of the Terebrantia all possess the eponymous saw-like (see terebra) ovipositor on the anteapical abdominal segment, lay eggs singly within plant tissue, and have two "pupal" stages. In most Terebrantia, the males are smaller than females. The family Uzelothripidae has a single species and it is unique in having a whip-like terminal antennal segment.[18]

Evolution

The earliest fossils of thrips date back to the Permian (Permothrips longipennis). By the Early Cretaceous, true thrips became much more abundant.[21] The extant family Merothripidae most resembles these ancestral Thysanoptera, and is probably basal to the order.[22] There are currently over six thousand species of thrips recognized, grouped into 777 extant and sixty fossil genera.[23]

Phylogeny

Thrips are generally considered to be the sister group to Hemiptera (bugs).[24]

The phylogeny of thrips families has been little studied. A preliminary analysis in 2013 of 37 species using 3 genes, as well as a phylogeny based on ribosomal DNA and three proteins in 2012, supports the monophyly of the two suborders, Tubulifera and Terebrantia. In Terebrantia, Melanothripidae may be sister to all other families, but other relationships remain unclear. In Tubulifera, the Phlaeothripidae and its subfamily Idolothripinae are monophyletic. The two largest thrips subfamilies, Phlaeothripinae and Thripinae, are paraphyletic and need further work to determine their structure. The internal relationships from these analyses are shown in the cladogram.[25][26]

Thysanoptera
Terebrantia

Melanthripidae

other Terebrantia

Tubulifera

Phlaeothripidae

Taxonomy

The following families are currently (2013) recognized:[26][27][18]

  • Adiheterothripidae Shumsher, 1946 (11 genera)
  • Aeolothripidae Uzel, 1895 (29 genera) – banded thrips and broad-winged thrips
  • Fauriellidae Priesner, 1949 (four genera)
  • †Hemithripidae Bagnall, 1923 (one fossil genus, Hemithrips with 15 species)
  • Heterothripidae Bagnall, 1912 (seven genera, restricted to the New World)
  • †Jezzinothripidae zur Strassen, 1973 (included by some authors in Merothripidae)
  • †Karataothripidae Sharov, 1972 (one fossil species, Karataothrips jurassicus)
  • Melanthripidae Bagnall, 1913 (six genera of flower feeders)
  • Merothripidae Hood, 1914 (five genera, mostly Neotropical and feeding on dry-wood fungi) – large-legged thrips
  • †Scudderothripidae zur Strassen, 1973 (included by some authors in Stenurothripidae)
  • Thripidae Stephens, 1829 (292 genera in four subfamilies, flower living) – common thrips
  • †Triassothripidae Grimaldi & Shmakov, 2004 (two fossil genera)
  • Uzelothripidae Hood, 1952 (one species, Uzelothrips scabrosus)
  • Suborder Tubulifera
  • Phlaeothripidae Uzel, 1895 (447 genera in two subfamilies, fungal hyphae and spore feeders)

The identification of thrips to species is challenging as types are maintained as slide preparations of varying quality over time. There is also considerable variability leading to many species being misidentified. Molecular sequence based approaches have increasingly been applied to their identification.[28][29]

Biology

The Australian rainforest shrub Myrsine (Rapanea) howittiana is pollinated by Thrips setipennis.

Feeding

Thrips are believed to have descended from a fungus-feeding ancestor during the Mesozoic,[21] and many groups still feed upon and inadvertently redistribute fungal spores. These live among leaf litter or on dead wood and are important members of the ecosystem, their diet often being supplemented with pollen. Other species are primitively eusocial and form plant galls and still others are predatory on mites and other thrips.[14] Two species of Aulacothrips, A. tenuis and A. levinotus, have been found to be ectoparasites on aetalionid and membracid plant-hoppers in Brazil.[30] Akainothrips francisi of Australia is a parasite within the colonies of another thrips species Dunatothrips aneurae that makes silken nests or domiciles on Acacia trees.[31] A number of thrips in the subfamily Phlaeothripinae that specialize on Acacia hosts produce silk with which they glue together phyllodes to form domiciles inside which their semi-social colonies live.[32]

Mirothrips arbiter has been found in paper wasp nests in Brazil. The eggs of the hosts including Mischocyttarus atramentarius, Mischocyttarus cassununga and Polistes versicolor are eaten by the thrips.[33] Thrips, especially in the family Aeolothripidae, are also predators, and are considered beneficial in the management of pests like the codling moths.[34]

Most research has focused on thrips species that feed on economically significant crops. Some species are predatory, but most of them feed on pollen and the chloroplasts harvested from the outer layer of plant epidermal and mesophyll cells. They prefer tender parts of the plant, such as buds, flowers and new leaves.[35][36] Besides feeding on plant tissues, the common blossom thrips feeds on pollen grains and on the eggs of mites. When the larva supplements its diet in this way, its development time and mortality is reduced, and adult females that consume mite eggs increase their fecundity and longevity.[37]

Pollination

Coffee tree leaves rolled up by Hoplandrothrips (Phlaeothripidae) damage

Some flower-feeding thrips pollinate the flowers they are feeding on, and some authors suspect that they may have been among the first insects to evolve a pollinating relationship with their host plants.[38] Scirtothrips dorsalis carries pollen of commercially important chili peppers.[39][40][41] Darwin found that thrips could not be kept out by any netting when he conducted experiments by keeping away larger pollinators.[42]Thrips setipennis is the sole pollinator of Wilkiea huegeliana, a small, unisexual annually flowering tree or shrub in the rainforests of eastern Australia. T. setipennis serves as an obligate pollinator for other Australian rainforest plant species, including Myrsine howittiana and M. variabilis.[43] The genus Cycadothrips is a specialist pollinator of cycads, the cones of which are adapted for pollination by small insects.[44] Thrips are likewise the primary pollinators of heathers in the family Ericaceae,[45] and play a significant role in the pollination of pointleaf manzanita. Electron microscopy has shown thrips carrying pollen grains adhering to their backs, and their fringed wings are perfectly capable of allowing them to fly from plant to plant.[44]

Damage to plants

Thrips can cause damage during feeding.[46] This impact may fall across a broad selection of prey items, as there is considerable breadth in host affinity across the order, and even within a species, varying degrees of fidelity to a host.[35][47] Family Thripidae in particular is notorious for members with broad host ranges, and the majority of pest thrips come from this family.[48][49] For example, Thrips tabaci damages crops of onions, potatoes, tobacco, and cotton.[36][50]

Eusocial colonies of Kladothrips cause and live in galls on Acacia trees.

Some species of thrips create galls, almost always in leaf tissue. These may occur as curls, rolls or folds, or as alterations to the expansion of tissues causing distortion to leaf blades. More complex examples cause rosettes, pouches and horns. Most of these species occur in the tropics and sub-tropics, and the structures of the galls are diagnostic of the species involved.[51] A radiation of thrips species seems to have taken place on Acacia trees in Australia; some of these species cause galls in the petioles, sometimes fixing two leaf stalks together, while other species live in every available crevice in the bark. In Casuarina in the same country, some species have invaded stems, creating long-lasting woody galls.[52]

Social behaviour

While poorly documented, chemical communication is believed to be important to the group.[53] Anal secretions are produced in the hindgut,[54] and released along the posterior setae as predator deterrents[54][55] In Australia, aggregations of male common blossom thrips have been observed on the petals of Hibiscus rosa-sinensis and Gossypium hirsutum; females were attracted to these groups so it seems likely that the males were producing pheromones.[56]

In the phlaeothripids that feed on fungi, males compete to protect and mate with females, and then defend the egg-mass. Males fight by flicking their rivals away with their abdomen, and may kill with their foretarsal teeth. Small males may sneak in to mate while the larger males are busy fighting. In the Merothripidae and in the Aeolothripidae, males are again polymorphic with large and small forms, and probably also compete for mates, so the strategy may well be ancestral among the Thysanoptera.[18]

Many thrips form galls on plants when feeding or laying their eggs. Some of the gall-forming Phlaeothripidae, such as genera Kladothrips[57] and Oncothrips,[58] form eusocial groups similar to ant colonies, with reproductive queens and nonreproductive soldier castes.[59][60][61]

Flight

Most insects create lift by the stiff-winged mechanism of insect flight with steady state aerodynamics; this creates a leading edge vortex continuously as the wing moves. The feathery wings of thrips, however, generate lift by clap and fling, a mechanism discovered by the Danish zoologist Torkel Weis-Fogh in 1973. In the clap part of the cycle, the wings approach each other over the insect's back, creating a circulation of air which sets up vortices and generates useful forces on the wings. The leading edges of the wings touch, and the wings rotate around their leading edges, bringing them together in the "clap". The wings close, expelling air from between them, giving more useful thrust. The wings rotate around their trailing edges to begin the "fling", creating useful forces. The leading edges move apart, making air rush in between them and setting up new vortices, generating more force on the wings. The trailing edge vortices, however, cancel each other out with opposing flows. Weis-Fogh suggested that this cancellation might help the circulation of air to grow more rapidly, by shutting down the Wagner effect which would otherwise counteract the growth of the circulation.[62][63][64][65]

Apart from active flight, thrips, even wingless ones, can also be picked up by winds and transferred long distances. During warm and humid weather, adults may climb to the tips of plants to leap and catch air current. Wind-aided dispersal of species has been recorded over 1600 km of sea between Australia and South Island of New Zealand.[18] It has been suggested that some bird species may also be involved in the dispersal of thrips. Thrips are picked up along with grass in the nests of birds and can be transported by the birds.[66]

A hazard of flight for very small insects such as thrips is the possibility of being trapped by water. Thrips have non-wetting bodies and have the ability to ascend a meniscus by arching their bodies and working their way head-first and upwards along the water surface in order to escape.[67]

Life cycle

Thrips nymph.
Scale bar is 0.5 mm

Thrips lay extremely small eggs, about 0.2 mm long. Females of the suborder Terebrantia cut slits in plant tissue with their ovipositor, and insert their eggs, one per slit. Females of the suborder Tubulifera lay their eggs singly or in small groups on the outside surfaces of plants.[68]

Thrips are hemimetabolous, metamorphosing gradually to the adult form. The first two instars, called larvae or nymphs, are like small wingless adults (often confused with springtails) without genitalia; these feed on plant tissue. In the Terebrantia, the third and fourth instars, and in the Tubulifera also a fifth instar, are non-feeding resting stages similar to pupae: in these stages, the body's organs are reshaped, and wing-buds and genitalia are formed.[68] The larvae of some species produce silk from the terminal abdominal segment which is used to line the cell or form a cocoon within which they pupate.[69] The adult stage can be reached in around 8–15 days; adults can live for around 45 days.[70] Adults have both winged and wingless forms; in the grass thrips Anaphothrips obscurus, for example, the winged form makes up 90% of the population in spring (in temperate zones), while the wingless form makes up 98% of the population late in the summer.[71] Thrips can survive the winter as adults or through egg or pupal diapause.[18]

Thrips are haplodiploid with haploid males (from unfertilised eggs, as in Hymenoptera) and diploid females capable of parthenogenesis (reproducing without fertilisation), many species using arrhenotoky, a few using thelytoky.[72] In Pezothrips kellyanus females hatch from larger eggs than males, possibly because they are more likely to be fertilized.[73] The sex-determining bacterial endosymbiont Wolbachia is a factor that affects the reproductive mode.[47][72][74] Several normally bisexual species have become established in the United States with only females present.[72][75]

Human impact

A tomato infected with the thrips-borne Tospovirus, tomato spotted wilt virus

As pests

Ponticulothrips diospyrosi on finger

Many thrips are pests of commercial crops due to the damage they cause by feeding on developing flowers or vegetables, causing discoloration, deformities, and reduced marketability of the crop. Some thrips serve as vectors for plant diseases, such as tospoviruses.[76] Over 20 plant-infecting viruses are known to be transmitted by thrips, but perversely, less than a dozen of the described species are known to vector tospoviruses.[77] These enveloped viruses are considered among some of the most damaging of emerging plant pathogens around the world, with those vector species having an outsized impact on human agriculture. Virus members include the tomato spotted wilt virus and the impatiens necrotic spot viruses. The western flower thrips, Frankliniella occidentalis, has spread until it now has a worldwide distribution, and is the primary vector of plant diseases caused by tospoviruses.[78] Other viruses that they spread include the genera Ilarvirus, (Alpha|Beta|Gamma)carmovirus, Sobemovirus and Machlomovirus.[79] Their small size and predisposition towards enclosed places makes them difficult to detect by phytosanitary inspection, while their eggs, laid inside plant tissue, are well-protected from pesticide sprays.[70] When coupled with the increasing globalization of trade and the growth of greenhouse agriculture, thrips, unsurprisingly, are among the fastest growing group of invasive species in the world. Examples include F. occidentalis, Thrips simplex, and Thrips palmi.[80]

Flower-feeding thrips are routinely attracted to bright floral colors (including white, blue, and especially yellow), and will land and attempt to feed. It is not uncommon for some species (e.g., Frankliniella tritici and Limothrips cerealium) to "bite" humans under such circumstances. Although no species feed on blood and no known animal disease is transmitted by thrips, some skin irritation has been described.[81]

Management

A robberfly preying on thrips

Thrips develop resistance to insecticides easily and there is constant research on how to control them. This makes thrips ideal as models for testing the effectiveness of new pesticides and methods.[82]

Due to their small sizes and high rates of reproduction, thrips are difficult to control using classical biological control. Suitable predators must be small and slender enough to penetrate the crevices where thrips hide while feeding, and they must also prey extensively on eggs and larvae to be effective. Only two families of parasitoid Hymenoptera parasitize eggs and larvae, the Eulophidae and the Trichogrammatidae. Other biocontrol agents of adults and larvae include anthocorid bugs of genus Orius, and phytoseiid mites. Biological insecticides such as the fungi Beauveria bassiana and Verticillium lecanii can kill thrips at all life-cycle stages.[83] Insecticidal soap spray is effective against thrips. It is commercially available or can be made of certain types of household soap. Scientists in Japan report that significant reductions in larva and adult melon thrips occur when plants are illuminated with red light.[84]

References

  1. Fedor, Peter J.; Doricova, Martina; Prokop, Pavol; Mound, Laurence A. (2010). "Heinrich Uzel, the father of Thysanoptera studies". Zootaxa 2645: 55–63. doi:10.11646/zootaxa.2645.1.3. http://www.mapress.com/zootaxa/2010/f/zt02645p063.pdf. 
  2. Morse, Joseph G.; Hoddle, Mark S. (2006). "Invasion Biology of Thrips". Annual Review of Entomology 51: 67–89. doi:10.1146/annurev.ento.51.110104.151044. PMID 16332204. https://doi.org/10.1146/annurev.ento.51.110104.151044. 
  3. Mound, Laurence A.; Wang, Zhaohong; Lima, Élison F. B.; Marullo, Rita (2022). "Problems with the Concept of "Pest" among the Diversity of Pestiferous Thrips". Insects 13 (1): 61. doi:10.3390/insects13010061. PMID 35055903. 
  4. Terry, I.; Walter, G.H.; Moore, C.; Roemer, R.; Hull, C. (2007). "Odor-Mediated Push-Pull Pollination in Cycads". Science 318 (5847): 70. doi:10.1126/science.1145147. PMID 17916726. Bibcode2007Sci...318...70T. 
  5. Wang, Zhaohong; Mound, Laurence A.; Hussain, Mubasher; Arthurs, Steven P.; Mao, Runqian (2022). "Thysanoptera as predators: Their diversity and significance as biological control agents". Pest Management Science 78 (12): 5057–5070. doi:10.1002/ps.7176. PMID 36087293. https://doi.org/10.1002/ps.7176. 
  6. "What are Thunderbugs?". 19 April 2016. https://www.thenakedscientists.com/articles/questions/what-are-thunderbugs. 
  7. Uzel, Jindrich (1895). Monografie řádu Thysanoptera. Hradec Králové. https://archive.org/details/monografieraduth00uzel. 
  8. Fedor, Peter J.; Doricova, Martina; Prokop, Pavol; Mound, Laurence A. (2010). "Heinrich Uzel, the father of Thysanoptera studies". Zootaxa 2645: 55–63. doi:10.11646/zootaxa.2645.1.3. http://www.mapress.com/zootaxa/2010/f/zt02645p063.pdf. "Jindřich (Heinrich) Uzel, a Czech phytopathologist and entomologist, published in 1895 a monograph on the Order Thysanoptera that provided the basis for almost all subsequent work on this group of insects.". 
  9. θρίψ. Liddell, Henry George; Scott, Robert; A Greek–English Lexicon at the Perseus Project.
  10. Kobro, Sverre (2011). "Checklist of Nordic Thysanoptera". Norwegian Journal of Entomology 58: 21–26. http://www.entomologi.no/journals/nje/2011-1/pdf/nje-vol58-no1-kobro.pdf. Retrieved October 25, 2014. 
  11. Kirk, W.D.J. (1996). Thrips: Naturalists' Handbooks 25. The Richmond Publishing Company. 
  12. Marren, Peter; Mabey, Richard (2010). Bugs Britannica. Chatto & Windus. p. 141. ISBN 978-0-7011-8180-2. https://books.google.com/books?id=Ah62bUZLDOwC. 
  13. "Thysanoptera". Merriam-Webster. https://www.merriam-webster.com/dictionary/Thysanoptera. 
  14. 14.0 14.1 Tipping, C. (2008). Capinera, John L.. ed. Encyclopedia of Entomology. Springer Science & Business Media. pp. 3769–3771. ISBN 978-1-4020-6242-1. https://books.google.com/books?id=i9ITMiiohVQC&pg=PA3769. 
  15. θύσανος, πτερόν in Liddell and Scott.
  16. Gillott, Cedric (2005). Entomology. Springer. p. 234. ISBN 978-0-306-44967-3. https://archive.org/details/entomology00cgil. 
  17. Heming, B. S. (1971). "Functional morphology of the thysanopteran pretarsus". Canadian Journal of Zoology 49 (1): 91–108. doi:10.1139/z71-014. PMID 5543183. 
  18. 18.0 18.1 18.2 18.3 18.4 18.5 Mound, L.A. (2003). "Thysanoptera". Encyclopedia of Insects. Academic Press. pp. 999–1003. ISBN 978-0-12-586990-4. https://archive.org/details/encyclopediaofin00bada. 
  19. Childers, C.C.; Achor, D.S. (1989). "Structure of the mouthparts of Frankliniella bispinosa (Morgan) (Thysanoptera: Thripidae).". Towards Understanding Thysanoptera. Proceedings of the International Conference on Thrips. Radnor, PA: USDA Technical Report NE-147. 
  20. Chisholm, I. F.; Lewis, T. (2009). "A new look at thrips (Thysanoptera) mouthparts, their action and effects of feeding on plant tissue". Bulletin of Entomological Research 74 (4): 663–675. doi:10.1017/S0007485300014048. 
  21. 21.0 21.1 Grimaldi, D.; Shmakov, A.; Fraser, N. (2004). "Mesozoic Thrips and Early Evolution of the Order Thysanoptera (Insecta)". Journal of Paleontology 78 (5): 941–952. doi:10.1666/0022-3360(2004)078<0941:mtaeeo>2.0.co;2. 
  22. Mound, L.A. (1997). "Thrips as Crop Pests". in Lewis, T.. Biological diversity. CAB International. pp. 197–215. 
  23. "Thrips Wiki". http://thrips.info/wiki/Main_Page. 
  24. Li, Hu (2015). "Higher-level phylogeny of paraneopteran insects inferred from mitochondrial genome sequences". Scientific Reports 5: 8527. doi:10.1038/srep08527. PMID 25704094. Bibcode2015NatSR...5E8527L. 
  25. Terry, Mark; Whiting, Michael (2013). "Evolution of Thrips (Thysanoptera) Phylogenetic Patterns and Mitochondrial Genome Evolution". Journal of Undergraduate Research. 
  26. 26.0 26.1 Buckman, Rebecca S.; Mound, Laurence A.; Whiting, Michael F. (2012). "Phylogeny of thrips (Insecta: Thysanoptera) based on five molecular loci". Systematic Entomology 38 (1): 123–133. doi:10.1111/j.1365-3113.2012.00650.x. 
  27. Mound, L.A. (2011). "Order Thysanoptera Haliday, 1836 in Zhang, Z.-Q. (Ed.) Animal biodiversity: An outline of higher-level classification and survey of taxonomic richness". Zootaxa 3148: 201–202. doi:10.11646/zootaxa.3148.1.38. http://www.mapress.com/zootaxa/2011/f/zt03148p202.pdf. 
  28. Mound, Laurence A. (2013). "Homologies and Host-Plant Specificity: Recurrent Problems in the Study of Thrips". Florida Entomologist 96 (2): 318–322. doi:10.1653/024.096.0250. http://journals.fcla.edu/flaent/article/view/82289. 
  29. Rugman-Jones, Paul F.; Hoddle, Mark S.; Mound, Laurence A.; Stouthamer, Richard (2006). "Molecular Identification Key for Pest Species of Scirtothrips (Thysanoptera: Thripidae)". J. Econ. Entomol. 99 (5): 1813–1819. doi:10.1093/jee/99.5.1813. PMID 17066817. https://www.researchgate.net/publication/6729061. 
  30. Cavalleri, Adriano; Kaminski, Lucas A. (2014). "Two new ectoparasitic species of Aulacothrips Hood, 1952 (Thysanoptera: Heterothripidae) associated with ant-tended treehoppers (Hemiptera)". Systematic Parasitology 89 (3): 271–8. doi:10.1007/s11230-014-9526-z. PMID 25274260. 
  31. Gilbert, James D. J.; Mound, Laurence A.; Simpson, Stephen J. (2012). "Biology of a new species of socially parasitic thrips (Thysanoptera: Phlaeothripidae) inside Dunatothrips nests, with evolutionary implications for inquilinism in thrips: A NEW INQUILINE THRIPS" (in en). Biological Journal of the Linnean Society 107 (1): 112–122. doi:10.1111/j.1095-8312.2012.01928.x. 
  32. Gilbert, James D. J.; Simpson, Stephen J. (2013). "Natural history and behaviour of Dunatothrips aneurae Mound (Thysanoptera: Phlaeothripidae), a phyllode-gluing thrips with facultative pleometrosis: Natural History of Dunatothrips Aneurae" (in en). Biological Journal of the Linnean Society 109 (4): 802–816. doi:10.1111/bij.12100. 
  33. Cavalleri, Adriano; De Souza, André R.; Prezoto, Fábio; Mound, Laurence A. (2013). "Egg predation within the nests of social wasps: a new genus and species of Phlaeothripidae, and evolutionary consequences of Thysanoptera invasive behaviour". Biological Journal of the Linnean Society 109 (2): 332–341. doi:10.1111/bij.12057. 
  34. Tadic, M. (1957). The Biology of the Codling Moth as the Basis for Its Control. Univerzitet U Beogradu. 
  35. 35.0 35.1 Kirk, W.D.J. (1995). Feeding behavior and nutritional requirements. Plenum Press. pp. 21–29. 
  36. 36.0 36.1 "Onion Thrips". NCSU. http://ipm.ncsu.edu/AG136/thrips9.html. 
  37. Milne, M.; Walter, G.H. (1997). "The significance of prey in the diet of the phytophagous thrips, Frankliniella schultzei". Ecological Entomology 22 (1): 74–81. doi:10.1046/j.1365-2311.1997.00034.x. 
  38. Terry, I. (2001). "Thrips: the primeval pollinators?". Thrips and Tospoviruses: Proceedings of the 7th Annual Symposium on Thysanoptera: 157–162. 
  39. Sakai, S (2001). "Thrips pollination of androdioecious Castilla elastica (Moraceae) in a seasonal tropical forest". American Journal of Botany 88 (9): 1527–1534. doi:10.2307/3558396. PMID 21669685. 
  40. Saxena, P.; Vijayaraghavan, M.R.; Sarbhoy, R.K.; Raizada, U. (1996). "Pollination and gene flow in chillies with Scirtothrips dorsalis as pollen vectors". Phytomorphology 46: 317–327. 
  41. Frame, Dawn (2003). "Generalist flowers, biodiversity and florivory: implications for angiosperm origins". Taxon 52 (4): 681–5. doi:10.2307/3647343. 
  42. Darwin, Charles (1892). The effects of cross and self fertilization in the vegetable kingdom. D. Appleton & Company. p. 11. https://archive.org/stream/effectsofcrossse00darw_0#page/n23/mode/2up/. 
  43. Williams, G.A.; Adam, P.; Mound, L.A. (2001). "Thrips (Thysanoptera) pollination in Australian subtropical rainforests, with particular reference to pollination of Wilkiea huegeliana (Monimiaceae)". Journal of Natural History 35 (1): 1–21. doi:10.1080/002229301447853. 
  44. 44.0 44.1 Eliyahu, Dorit; McCall, Andrew C.; Lauck, Marina; Trakhtenbrot, Ana; Bronstein, Judith L. (2015). "Minute pollinators: The role of thrips (Thysanoptera) as pollinators of pointleaf manzanita, Arctostaphylos pungens (Ericaceae)". Journal of Pollination Ecology 16: 64–71. doi:10.26786/1920-7603(2015)10. PMID 26207155. 
  45. García-Fayos, Patricio; Goldarazena, Arturo (2008). "The role of thrips in pollination of Arctostaphyllos uva-ursi". International Journal of Plant Sciences 169 (6): 776–781. doi:10.1086/588068. 
  46. Childers, C.C. (1997). Lewis, T.. ed. Feeding and oviposition injuries to plants. CAB International. pp. 505–538. 
  47. 47.0 47.1 Mound, L. A. (2005). "Thysanoptera: diversity and interactions". Annual Review of Entomology 50: 247–269. doi:10.1146/annurev.ento.49.061802.123318. PMID 15355240. 
  48. Bailey, S. F. (1940). "The distribution of injurious thrips in the United States". Journal of Economic Entomology 33 (1): 133–136. doi:10.1093/jee/33.1.133. 
  49. Ananthakrishnan, T.N. (1993). "Bionomics of Thrips". Annual Review of Entomology 38: 71–92. doi:10.1146/annurev.en.38.010193.000443. 
  50. "Thrips tabaci (onion thrips)". Invasive Species Compendium. CABI. http://www.cabi.org/isc/datasheet/53746. 
  51. Jorge, Nina Castro; Cavalleri, Adriano; Bedetti, Cibele Souza; Isaias, Rosy Mary Dos Santos (2016). "A new leaf-galling Holopothrips (Thysanoptera: Phlaeothripidae) and the structural alterations on Myrcia retorta (Myrtaceae)". Zootaxa 4200 (1): 174–180. doi:10.11646/zootaxa.4200.1.8. ISSN 1175-5334. PMID 27988645. 
  52. Mound, Laurence (2014). "Austral Thysanoptera: 100 years of progress". Australian Journal of Entomology 53 (1): 18–25. doi:10.1111/aen.12054. 
  53. Blum, M.S. (1991). "Towards understanding Thysanoptera: Chemical ecology of the Thysanoptera". Proceedings of the International Conference on Thrips. USDA Technical Report NE-147: 95–108. 
  54. 54.0 54.1 Howard, Dennis F.; Blum, Murray S.; Fales, Henry M. (1983). "Defense in Thrips: Forbidding Fruitiness of a Lactone" (in en). Science 220 (4594): 335–336. doi:10.1126/science.220.4594.335. ISSN 0036-8075. PMID 17732921. Bibcode1983Sci...220..335H. 
  55. Tschuch, G.; Lindemann, P.; Moritz, G. (2002). "Chemical defence in thrips". Thrips and Tospoviruses: Proceedings of the 7th International Symposium on Thysanoptera: 277–278. 
  56. Milne, M.; Walter, G.H.; Milne, J.R. (2002). "Mating Aggregations and Mating Success in the Flower Thrips, Frankliniella schultzei (Thysanoptera: Thripidae), and a Possible Role for Pheromones". Journal of Insect Behavior 15 (3): 351–368. doi:10.1023/A:1016265109231. 
  57. Kranz, B.D.; Schwarz, M.P.; Mound, L.A.; Crespi, B.J. (1999). "Social biology and sex ratios of the eusocial gall-inducing thrips Kladothrips hamiltoni". Ecological Entomology 24 (4): 432–442. doi:10.1046/j.1365-2311.1999.00207.x. 
  58. Kranz, Brenda D.; Schwarz, Michael P.; Wills, Taryn E.; Chapman, Thomas W.; Morris, David C.; Crespi, Bernard J. (2001). "A fully reproductive fighting morph in a soldier clade of gall-inducing thrips (Oncothrips morrisi)". Behavioral Ecology and Sociobiology 50 (2): 151–161. doi:10.1007/s002650100347. 
  59. Crespi, B.J.; Mound, L.A. (1997). "Ecology and evolution of social behaviour among Australian gall thrips and their allies". The evolution of social behaviour of insects and arachnids. Cambridge University Press. pp. 166–180. ISBN 978-0-521-58977-2. https://books.google.com/books?id=qkHHO_SmM_kC&pg=PA166. 
  60. Chapman, T.W.; Crespi, B.J. (1998). "High relatedness and inbreeding in two species of haplodiploid eusocial thrips (Insecta: Thysanoptera) revealed by microsatellite analysis". Behavioral Ecology and Sociobiology 43 (4): 301–306. doi:10.1007/s002650050495. 
  61. Kranz, Brenda D.; Schwarz, Michael P.; Morris, David C.; Crespi, Bernard J. (2002). "Life history of Kladothrips ellobus and Oncothrips rodwayi: insight into the origin and loss of soldiers in gall-inducing thrips". Ecological Entomology 27 (1): 49–57. doi:10.1046/j.1365-2311.2002.0380a.x. 
  62. Weis-Fogh, T. (1973). "Quick estimates of flight fitness in hovering animals, including novel mechanisms for lift production". Journal of Experimental Biology 59: 169–230. doi:10.1242/jeb.59.1.169. http://jeb.biologists.org/content/59/1/169.abstract. 
  63. Sane, Sanjay P. (2003). "The aerodynamics of insect flight". The Journal of Experimental Biology 206 (23): 4191–4208. doi:10.1242/jeb.00663. PMID 14581590. http://www.cs.washington.edu/homes/diorio/MURI2003/Publications/sane_review.pdf. 
  64. Wang, Z. Jane (2005). "Dissecting Insect Flight". Annual Review of Fluid Mechanics 37 (1): 183–210. doi:10.1146/annurev.fluid.36.050802.121940. Bibcode2005AnRFM..37..183W. http://www.physics.emory.edu/~weeks/lab/papers/jwang-arf05.pdf. 
  65. Lighthill, M. J. (1973). "On the Weis-Fogh mechanism of lift generation". Journal of Fluid Mechanics 60: 1–17. doi:10.1017/s0022112073000017. Bibcode1973JFM....60....1L. 
  66. Fedor, Peter; Doričová, Martina; Dubovský, Michal; Kisel'ák, Jozef; Zvarík, Milan (2019-08-15). "Cereal pests among nest parasites – the story of barley thrips, Limothrips denticornis Haliday (Thysanoptera: Thripidae)". Entomologica Fennica 21 (4): 221–231. doi:10.33338/ef.84532. ISSN 2489-4966. https://journal.fi/entomolfennica/article/view/84532. 
  67. Ortega-Jiménez, Victor Manuel; Arriaga-Ramirez, Sarahi; Dudley, Robert (2016). "Meniscus ascent by thrips (Thysanoptera)". Biology Letters 12 (9): 20160279. doi:10.1098/rsbl.2016.0279. PMID 27624795. 
  68. 68.0 68.1 Gullan, P. J.; Cranston, P. S. (2010). The Insects: An Outline of Entomology (4th ed.). Wiley. p. 511. ISBN 978-1-118-84615-5. https://archive.org/details/insectsoutlineen00pjgu. 
  69. Conti, Barbara; Berti, Francesco; Mercati, David; Giusti, Fabiola; Dallai, Romano (2009). "The ultrastructure of malpighian tubules and the chemical composition of the cocoon of Aeolothrips intermedius Bagnall (Thysanoptera)" (in en). Journal of Morphology 271 (2): 244–254. doi:10.1002/jmor.10793. https://onlinelibrary.wiley.com/doi/10.1002/jmor.10793. 
  70. 70.0 70.1 Smith, Tina M. (2015). "Western Flower Thrips, Management and Tospoviruses". University of Massachusetts Amherst. https://ag.umass.edu/greenhouse-floriculture/fact-sheets/western-flower-thrips-management-tospoviruses. 
  71. Capinera, John L. (2001). Handbook of Vegetable Pests. Gulf. p. 538. ISBN 978-0-12-158861-8. https://books.google.com/books?id=l_0KOVxv-tYC&pg=PA538. 
  72. 72.0 72.1 72.2 van der Kooi, C.J.; Schwander, T. (2014). "Evolution of asexuality via different mechanisms in grass thrips (Thysanoptera: Aptinothrips)". Evolution 68 (7): 1883–1893. doi:10.1111/evo.12402. PMID 24627993. http://www.rug.nl/research/plant-ecophysiology/publications/_pdf/vanderkooievolution2014.pdf. 
  73. Katlav, Alihan; Cook, James M.; Riegler, Markus (2020). Houslay, Thomas. ed. "Egg size-mediated sex allocation and mating-regulated reproductive investment in a haplodiploid thrips species" (in en). Functional Ecology 35 (2): 485–498. doi:10.1111/1365-2435.13724. ISSN 0269-8463. 
  74. Kumm, S.; Moritz, G. (2008). "First detection of Wolbachia in arrhenotokous populations of thrips species (Thysanoptera: Thripidae and Phlaeothripidae) and its role in reproduction". Environmental Entomology 37 (6): 1422–8. doi:10.1603/0046-225X-37.6.1422. PMID 19161685. 
  75. Stannard, L.J. (1968). "The thrips, or Thysanoptera, of Illinois". Illinois Natural History Survey 21 (1–4): 215–552. doi:10.21900/j.inhs.v29.166. 
  76. Nault, L. R. (1997). "Arthropod transmission of plant viruses: a new synthesis". Annals of the Entomological Society of America 90 (5): 521–541. doi:10.1093/aesa/90.5.521. 
  77. Mound, L. A. (2001). "So many thrips – so few tospoviruses?". Thrips and Tospoviruses: Proceedings of the 7th International Symposium on Thysanoptera: 15–18. 
  78. Morse, Joseph G.; Hoddle, Mark S. (2006). "Invasion Biology of Thrips". Annual Review of Entomology 51: 67–89. doi:10.1146/annurev.ento.51.110104.151044. PMID 16332204. 
  79. Jones, David R (2005). "Plant Viruses Transmitted by Thrips" (in en). European Journal of Plant Pathology 113 (2): 119–157. doi:10.1007/s10658-005-2334-1. ISSN 0929-1873. http://link.springer.com/10.1007/s10658-005-2334-1. 
  80. Carlton, James (2003). Invasive Species: Vectors And Management Strategies. Island Press. pp. 54–55. ISBN 978-1-61091-153-5. https://books.google.com/books?id=li6hUvpnp2sC&pg=PA54. 
  81. Childers, C.C.; Beshear, R.J.; Frantz, G.; Nelms, M. (2005). "A review of thrips species biting man including records in Florida and Georgia between 1986–1997". Florida Entomologist 88 (4): 447–451. doi:10.1653/0015-4040(2005)88[447:AROTSB2.0.CO;2]. 
  82. Kivett, Jessica M.; Cloyd, Raymond A.; Bello, Nora M. (2015). "Insecticide rotation programs with entomopathogenic organisms for suppression of western flower thrips (Thysanoptera: Thripidae) adult populations under greenhouse conditions". Journal of Economic Entomology 108 (4): 1936–1946. doi:10.1093/jee/tov155. ISSN 0022-0493. PMID 26470338. 
  83. Hoddle, Mark. "Western flower thrips in greenhouses: a review of its biological control and other methods". University of California, Riverside. http://biocontrol.ucr.edu/wft.html#Biological%20Control%20Approaches. 
  84. Katai, Yusuke; Ishikawa, Ryusuke; Doi, Makoto; Masui, Shinichi (2015). "Efficacy of red LED irradiation for controlling Thrips palmi in greenhouse melon cultivation". Japanese Journal of Applied Entomology and Zoology 59 (1): 1–6. doi:10.1303/jjaez.2015.1. 

External links

Wikidata ☰ Q185628 entry