Heteromydas

Hardy, 1944

Species Guides

1

Heteromydas is a of mydas flies ( Mydidae) containing two described : H. bicolor and H. chrysites. These are large, robust flies found in arid regions of western North America. The genus was established by Hardy in 1944. Very few observations exist, with only one documented on iNaturalist.

Pronunciation

How to pronounce Heteromydas: /ˌhɛt.ɛr.oʊˈmaɪ.dæs/

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Identification

Heteromydas are large mydas flies with distinctive coloration. H. bicolor has a black body with orange-yellow abdominal segments. H. chrysites shows metallic golden-green coloration. Both species have the characteristic mydid features: large size, elongated , and clubbed . Separation from other mydid requires examination of wing venation and male genitalia.

Habitat

Arid and semi-arid regions of western North America, including desert and scrubland environments.

Distribution

Western North America. Heteromydas bicolor is known from California. Heteromydas chrysites occurs in the southwestern United States and Mexico.

Similar Taxa

  • MydasSimilar large size and body form; distinguished by wing venation patterns and antennal structure
  • SyrphidaeSome syrphid mimics may appear superficially similar; distinguished by wing venation (mydids have reduced venation) and antennal shape

Sources and further reading