Calyxochaetus

Bigot, 1888

Species Guides

Calyxochaetus is a of long-legged flies in the Dolichopodidae, Sympycninae. Formerly treated as a subgenus of Sympycnus, it is now recognized as a distinct genus containing 36 in the New World. The genus was revised in 2024, with species organized into five species groups based on morphological characters.

Calyxochaetus nodatus by (c) Victor Engel, some rights reserved (CC BY), uploaded by Victor Engel. Used under a CC-BY license.

Calyxochaetus by (c) Katja Schulz, some rights reserved (CC BY), uploaded by Katja Schulz. Used under a CC-BY license.

Pronunciation

How to pronounce Calyxochaetus: //kəˌlɪk.soʊˈkiː.təs//

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Identification

-level identification relies on male genitalic characters, particularly the structure of the hypopygium. The 2024 revision provides a key to males based on these features. The is distinguished from related sympycnine genera by specific combinations of antennal, leg, and genitalic , though precise diagnostic characters for the genus require examination.

Images

Distribution

New World, occurring in both Nearctic and Neotropical regions. distributions have been mapped in the 2024 revision, with records from North America including the southwestern United States and Mexico.

Similar Taxa

SympycnusFormerly considered a subgenus of Sympycnus; separated based on distinct morphological characters in antennal and genitalic structure

More Details

Taxonomic history

Elevated from subgenus to status; the 2024 revision by Brooks recognized 36 , described 14 new species, proposed seven new synonyms, and designated five lectotypes

Species groups

The 36 are classified into five groups: C. tripilus group, C. cilifemoratus group, C. fortunatus group, C. insolitus group, and C. frontalis group