Cyrtopogon dasyllis
Williston, 1893
Cyrtopogon dasyllis is a of robber fly in the Asilidae, first described by Samuel Wendell Williston in 1893. The Cyrtopogon comprises predatory flies that hunt other insects in . Like other Asilidae, this species likely exhibits the characteristic of perching on vegetation and ambushing prey. Specific details about its and distribution remain poorly documented in published literature.
Pronunciation
How to pronounce Cyrtopogon dasyllis: /ˌsɪrtəˈpoʊɡɒn dəˈsɪlɪs/
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Identification
Members of the Cyrtopogon can be distinguished from other robber fly genera by their slender body form, elongated , and relatively long, thin legs. Identification to level requires examination of genitalic characters and comparison with . C. dasyllis was described from specimens collected in Colorado; precise diagnostic features distinguishing it from congeneric species such as C. willistoni are not readily available in general sources.
Distribution
The was described from Colorado, USA. No additional verified records of its geographic range have been documented in the provided sources.
Behavior
Robber flies in the Cyrtopogon are known to perch on vegetation and ambush flying insect prey. Courtship has been observed in Cyrtopogon generally, with males approaching females in .
Ecological Role
As a predatory fly, this functions as an in its , contributing to of other flying insects.
Similar Taxa
- Cyrtopogon willistoniA congeneric found in similar in Colorado; both species share the slender body form typical of the . C. willistoni has been documented from the Blodgett Peak area of Colorado Springs, suggesting potential sympatry with C. dasyllis.
More Details
Taxonomic note
The epithet 'dasyllis' derives from Greek, possibly referring to the hairy or shaggy appearance of the species (from 'dasys', meaning hairy or dense). The original description by Williston (1893) would contain precise diagnostic features.
Data gaps
No modern revision of the Cyrtopogon appears to have synthesized -level information for North American . Basic information on preference, altitudinal range, and seasonality for C. dasyllis remains undocumented in readily accessible sources.