Biology:Locustella

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Locustella is a genus of small passerine birds that includes the grasshopper warblers. Formerly placed in the paraphyletic "Old World warbler" assemblage, they are now considered the northernmost representatives of a largely Gondwanan family, the Locustellidae.

These are rather drab brownish "warblers" usually associated with fairly open grassland, shrubs or marshes. Some are streaked, others plain, all are difficult to view. They are insectivorous.

The most characteristic feature of this group is that the song of several species is a mechanical insect-like reeling which gives rise to the group's scientific name.

Species breeding in temperate regions are strongly migratory.

Taxonomy

The genus Locustella was introduced by the German naturalist Johann Jakob Kaup in 1829 with the common grasshopper warbler (Locustella naevia) as the type species.[1][2] The genus name Locustella is from Latin and is a diminutive of locusta, "grasshopper".[3] Like the English name, this refers to the insect-like song of some species.[4]

The genus contains the following twenty-three species:[5]

Image Common name Scientific name
120px Lanceolated warbler Locustella lanceolata
120px Brown bush warbler Locustella luteoventris
120px Long-billed bush warbler Locustella major
120px Common grasshopper warbler Locustella naevia
120px Chinese bush warbler Locustella tacsanowskia
120px Bamboo warbler Locustella alfredi
120px River warbler Locustella fluviatilis
120px Savi's warbler Locustella luscinioides
120px Friendly bush warbler Locustella accentor
120px Sulawesi bush warbler Locustella castanea
120px Seram bush warbler Locustella musculus
120px Buru bush warbler Locustella disturbans
120px Long-tailed bush warbler Locustella caudata
120px Baikal bush warbler Locustella davidi
120px Spotted bush warbler Locustella thoracica
120px West Himalayan bush warbler Locustella kashmirensis
120px Taiwan bush warbler Locustella alishanensis
120px Russet bush warbler Locustella mandelli
120px Dalat bush warbler Locustella idonea
120px Benguet bush warbler Locustella seebohmi
120px Javan bush warbler Locustella montis
120px Sichuan bush warbler Locustella chengi
120px Taliabu bush warbler Locustella portenta

This genus formerly included additional species. A molecular phylogenetic study of the grassbird family Locustellidae published in 2018 found that the genus Locustella consisted of two distinct clades. The genus was split and six species were moved to the newly erected genus Helopsaltes.[6][5]

A fossil acrocoracoid from the Late Miocene (about 11 mya) of Rudabánya (NE Hungary) is quite similar to this bone in the present genus.[7] Given its rather early age (most Passerida genera are not known until the Pliocene), it is not too certain that it is correctly placed here, but it is highly likely to belong to the Locustellidae, or the Sylvioidea at the least. As the grasshopper warblers are the only known locustellid warblers from Europe, it is still fairly likely that the bone piece belongs to a basal Locustella.

References

  1. ↑ Kaup, Johann Jakob (1829) (in de). Skizzirte Entwickelungs-Geschichte und Naturliches System der Europaischen Thierwelt. 1. Darmstadt: Carl Wilhelm Leske. p. 115. https://biodiversitylibrary.org/page/41576538. 
  2. ↑ Mayr, Ernst; Cottrell, G. William, eds (1986). Check-list of Birds of the World. 11. Cambridge, Massachusetts: Museum of Comparative Zoology. p. 50. https://biodiversitylibrary.org/page/14483751. 
  3. ↑ Jobling, James A (2010). The Helm Dictionary of Scientific Bird Names. London: Christopher Helm. p. 229. ISBN 978-1-4081-2501-4. https://archive.org/details/Helm_Dictionary_of_Scientific_Bird_Names_by_James_A._Jobling. 
  4. ↑ Grasshopper (3rd ed.), Oxford University Press, September 2005, http://oed.com/search?searchType=dictionary&q=Grasshopper  (Subscription or UK public library membership required.)
  5. ↑ 5.0 5.1 Gill, Frank; Donsker, David, eds (2019). "Grassbirds, Donacobius, Malagasy warblers, cisticolas, allies". International Ornithologists' Union. https://www.worldbirdnames.org/bow/grassbirds/. 
  6. ↑ Alström, P.; Cibois, A.; Irestedt, M.; Zuccon, D.; Gelang, M.; Fjeldså, J.; Andersen, M.J.; Moyle, R.G. et al. (2018). "Comprehensive molecular phylogeny of the grassbirds and allies (Locustellidae) reveals extensive non-monophyly of traditional genera, and a proposal for a new classification". Molecular Phylogenetics and Evolution 127: 367–375. doi:10.1016/j.ympev.2018.03.029. PMID 29625229. Bibcode: 2018MolPE.127..367A. https://zenodo.org/record/2587007. 
  7. ↑ Bernor, R.L.; Kordos, L. & Rook, L. (eds):"Recent Advances on Multidisciplinary Research at Rudabánya, Late Miocene (MN9), Hungary: A compendium ". Paleontographica Italiana 89: 3-36.

Wikidata ☰ Q850925 entry