Ocydromiinae

Genus Guides

Ocydromiinae is a of dance flies within the Hybotidae (Diptera: Empidoidea). The subfamily comprises two recognized tribes: Ocydromiini and Bicellariini. It includes approximately 13 with distributions spanning the Neotropical, Australasian, and New Zealand regions. Several genera are to restricted geographic areas, including Pseudoscelolabes and Austropeza in New Zealand, and Leptodromia in Australia. Taxonomic revisions have been published for multiple genera, indicating ongoing systematic research but limited ecological study.

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

Ocydromia glabricula by (c) Paul Cook, some rights reserved (CC BY), uploaded by Paul Cook. Used under a CC-BY license.

Leptopeza by (c) portioid, some rights reserved (CC BY), uploaded by portioid. Used under a CC-BY license.

Pronunciation

How to pronounce Ocydromiinae: //ˌoʊsaɪˈdroʊmɪaɪniː//

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Identification

Ocydromiinae can be distinguished from other hybotid by genitalic characters, particularly features of the male and female terminalia. The subfamily includes two tribes: Bicellariini ( Bicellaria, Hoplocyrtoma, Leptocyrtoma) and Ocydromiini (remaining genera). Genus-level identification relies on characters of the , wing venation, and leg structure. For example, Leptodromia are to Australia and can be recognized by specific wing markings including bimaculate or t-maculate patterns. Scelolabes species in the Neotropics are distinguished from the related genus Hoplopeza by genitalic . Comprehensive identification keys to genera exist for the New Zealand fauna.

Images

Distribution

The has a disjunct distribution across the Southern Hemisphere. The Neotropical region supports including Scelolabes, Chvalaea, and Hoplopeza (the latter also in Andean forests of Colombia). The Australasian region (Australia) contains the genus Leptodromia and the genus Chvalaea. New Zealand has a distinctive fauna including the endemic genera Pseudoscelolabes and Austropeza, plus Oropezella and Abocciputa. The genus Hoplopeza has also been recorded from the Andean of Colombia at high elevations.

Similar Taxa

HybotinaeAnother of Hybotidae; Ocydromiinae differs in genitalic and geographic distribution (Hybotinae is more widespread in the Northern Hemisphere)
TachydromiinaeThird of Hybotidae; distinguished from Ocydromiinae by wing venation, leg structure, and male terminalia characters

More Details

Taxonomic composition

The contains two tribes: Ocydromiini (with Abocciputa, Apterodromia, Austropeza, Hoplopeza, Leptodromiella, Leptodromia, Leptopeza, Neotrichina, Ocydromia, Oropezella, Pseudoscelolabes, Scelolabes, Stylocydromia) and Bicellariini (Bicellaria, Hoplocyrtoma, Leptocyrtoma).

Research gaps

Available literature focuses almost exclusively on alpha and descriptions. No published studies were found addressing larval , feeding , mating systems, or ecological function for any Ocydromiinae .

Type specimen issues

The Scelolabes was historically poorly studied because the of the type S. bivittatus Philippi was lost or destroyed, requiring recent revisions to establish diagnostic criteria based on expert-identified specimens.