Biology:Anax guttatus

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Short description: Species of dragonfly

Pale-spotted emperor
Aeshnidae - Anax guttatus.jpg
Anax guttatus from French Polynesia. Male
Scientific classification edit
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Odonata
Infraorder: Anisoptera
Family: Aeshnidae
Genus: Anax
Species:
A. guttatus
Binomial name
Anax guttatus
(Burmeister, 1839)[2]
Anax guttatus distribution map.svg
Synonyms[3]

Anax guttatus,[4] the pale-spotted emperor or lesser green emperor, is a dragonfly of the family Aeshnidae.[5]

Distribution

Anax guttatus is widespread from India to Japan and Australia and Pacific Ocean Islands.[6] It is found in Northern Australia, Africa, Bangladesh, China (Guangdong, Guangxi, Hong Kong, Hainan), Indonesia, India , Japan , Maldives, Sri Lanka, Myanmar, Malaysia, Philippines , Peninsular Malaysia, Singapore, Thailand, Taiwan, Vietnam, Cook Islands, Fiji, French Polynesia, Marshall Islands, Micronesia, New Caledonia, Palau, Papua New Guinea, Samoa, Seychelles, Tonga and Vanuatu.[1][7][8]

Habitat

This species mainly occurs in open ponds, but also in various habitats, especially with slowly flowing or standing freshwater. It is also present in urban areas.[1]

Description

It is a big dragonfly with blue eyes, pale green thorax and dark brown abdomen with bright blue-green markings on the sides. It can reach a wingspan of about 11 centimetres (4.3 in) and a body length of about 8 centimetres (3.1 in). Forewings are clear, the inner-half of the hindwings is brown, while the outer-half is clear. Segment 1 and sides of segment 2 of the abdomen are pale green. The dorsum of segment 2 is blue. Segment 3 is pale green on the sides with a triangular blue spot on the dorsum. Segments 4 to 7 are with a pair of baso-lateral, postjugal, and apical spots, all in bright orange. The number of spots are lesser in segment 8 to 10. Anal appendages are dark brown; the middle of the inner margins of the superiors have a projection like a straight edged shelf. Females is similar to the male; but the brown patch on the hind-wing may pale or absent. The blue on the dorsum of segment 2 will be broken up into four by a narrow brown mid-dorsal carina and a transverse line lying midway to form a cross like mark. Anal appendages are very broad and shaped like lance head.[9][10][11]

  • Male

  • Female

  • In flight

  • Female. Museum specimen

  • Dorsal view of the right wings of a male

See also

  • List of odonates of India
  • List of Odonata species of Australia
  • List of odonata of Kerala

Bibliography

  • Fraser, F. C. (1922) Indian dragonflies. Part XIV., Journal Bombay Natural History Society 28 (4): 899-910, figs. 1–3.
  • Lieftinck, M.A. 1954. Handlist of Malaysian Odonata. A catalogue of the dragonflies of the Malay Peninsula, Sumatra, Java and Borneo, including the adjacent small islands. Treubia 22(Supplement): i-xiii 1-202
  • Rambur, P. (1842) Histoire naturelle des insectes. Névroptères., Librairie Encyclopédique de Roret, Paris 1–534, incl. pl. 1–12.
  • Watson, J.A.L. 1973. Odonata (Dragonflies). Appendix 3 pp. 1–7 fig. 1 tables 1–4 in, Alligator Rivers Region Environmental Fact-Finding Study: Entomology. Canberra : CSIRO, Division of Entomology.
  • Wise, 1980: Records of South Pacific Dragonflies (Hexapoda: Odonata). Rec. Auckland Inst. Mus. 17:175-178, W&D79,

References

  1. ↑ 1.0 1.1 1.2 Dow, R.A. (2017). "Anax guttatus". IUCN Red List of Threatened Species 2017: e.T167337A48635356. doi:10.2305/IUCN.UK.2017-1.RLTS.T167337A48635356.en. https://www.iucnredlist.org/species/167337/48635356. Retrieved 20 November 2021. 
  2. ↑ Burmeister, Hermann (1839) (in la, de). Handbuch der Entomologie. 2. Berlin: T.C.F. Enslin. pp. 805–862 [840]. https://www.biodiversitylibrary.org/page/8223200. 
  3. ↑ Biolib
  4. ↑ "World Odonata List". University of Puget Sound. https://www.pugetsound.edu/academics/academic-resources/slater-museum/biodiversity-resources/dragonflies/world-odonata-list2/. 
  5. ↑ Catalogue of life
  6. ↑ K.A., Subramanian; K.G., Emiliyamma; R., Babu; C., Radhakrishnan; S.S., Talmale (2018). Atlas of Odonata (Insecta) of the Western Ghats, India. Zoological Survey of India. pp. 187–188. ISBN 9788181714954. 
  7. ↑ "Species Anax guttatus (Burmeister, 1839)". Australian Biological Resources Study. 2013. https://biodiversity.org.au/afd/taxa/Anax_guttatus. 
  8. ↑ Query Results
  9. ↑ Cook Islands Biodiversity Database
  10. ↑ Watson, J.A.L.; Theischinger, G.; Abbey, H.M. (1991). The Australian Dragonflies: A Guide to the Identification, Distributions and Habitats of Australian Odonata. Melbourne: CSIRO. ISBN 0643051368. 
  11. ↑ C FC Lt. Fraser (1936). The Fauna of British India, including Ceylon and Burma, Odonata Vol. III. Red Lion Court, Fleet Street, London: Taylor and Francis. pp. 140–142. https://archive.org/details/FraserOdonata3/page/n151. 

External links

Wikidata ☰ Q1314337 entry



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