Apallates coxendix
(Fitch, 1856)
A small grass fly in the Chloropidae, originally described as Oscinis coxendix by Fitch in 1856 and later transferred to the Apallates. The genus Apallates is a small group within the Oscinellinae, and -level remains poorly documented. The specific epithet 'coxendix' refers to the coxal region of the leg. Known from very few observations.
Pronunciation
How to pronounce Apallates coxendix: /əˈpæleɪts ˈkɒksɛndɪks/
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Identification
Positive identification requires examination of male terminalia and detailed chaetotaxy; external alone is insufficient to distinguish from and other small chloropids. The Apallates is characterized by specific features of the genitalia and wing venation, but boundaries within the genus are not well resolved in field guides.
Images
Appearance
As with other members of Chloropidae, a small fly (body length approximately 2–4 mm) with reduced wing venation, short with a distinct , and often yellowish or grayish coloration. Specific diagnostic features for A. coxendix are not documented in accessible literature.
Habitat
associations are not documented for this . Many Chloropidae occur in grasslands, meadows, and agricultural fields where larval stages develop in grass stems or soil.
Distribution
Original description from North America (New York state, based on Fitch's 1856 work). GBIF records suggest additional North American occurrences, but precise range boundaries are unknown.
Similar Taxa
- Other Apallates species-level characters require genitalic dissection for reliable separation; no published key distinguishes A. coxendix from based on external features.
- Oscinella spp.Overlaps in size, coloration, and ; historically confused due to original placement in Oscinis, now distinguished by genitalic and wing venation characters.
- Other small Chloropidae (Oscinellinae)Many in this are morphologically convergent, with reliable identification requiring microscopic examination of male terminalia and specific bristle patterns.
More Details
Taxonomic history
Originally described as Oscinis coxendix by Asa Fitch in his 1856 'First and Second Reports on the Noxious, Beneficial and Other Insects of the State of New York'. The transfer to Apallates reflects subsequent revision of chloropid generic limits. The Apallates was erected to accommodate previously placed in Oscinis or related genera based on genitalic .
Data deficiency
Only 8 observations in iNaturalist and minimal specimen records in GBIF indicate this is rarely encountered or underreported. No peer-reviewed publications specifically addressing the of A. coxendix were located. Most information must be inferred cautiously from -level characteristics.