Antocha (Antocha)


Osten Sacken, C.R. 1860. New genera and species of North American Tipulidae with short palpi, with an attempt at a new classification of the tribe. Proceedings of the Academy of Natural Sciences of Philadelphia 1859: 219.


An extensive genus of commonly encountered aquatic flies that are grouped based on characteristics of wing venation and by the reduction of the larval respiratory system to an apneustic state. The adult Antocha are characterized by the prominent anal lobe of the wing and the strong Costal and Radial veins that result in the compression of the cells of the radial field. Antocha (Antocha) can be separated from A. (Orimargula) by the possession on cell dm, which is lost in A. (Orimargula). The male genitalia of this genus is simple with two gonostyli, a more sclerotized dorsal style and a simple fleshy ventral style.

Antocha (Antocha)
Antocha (Antocha) sp. wing
Figure 1. Wing of Antocha (Antocha) obtusa Alexander (scale bar = 1.0 mm) 

Antocha (Antocha) obtusa hypopygium
Figure 2. Male hypopygium of Antocha (Antocha) obtusa Alexander (scale bar = 0.5 mm) 

The genus Antocha (Antocha) is most strongly associated with the Eastern Palearctic (43 species) and Oriental (65 species) Regions, with many species shared between these two areas. The genus is only weakly represented outside of these two regions, with 7 Nearctic species (1 species that is continued to the Neotropical Region) and 4 Western Palearctic species. Antohca (Antocha) is absent from both the Afrotropical and Australian/Oceanic Regions.

Larval Habitat: 

The larvae of A. (Antocha) are apneustic and completely aquatic in both the larval and pupal stages. They typically inhabit cool streams, living inside of silken tubes that are attached to rocks and stones, commonly being found in the cracks and crevices.