Chyromyidae

Definition

A family of small to minute acalyptrate flies (Diptera: Heleomyzoidea) characterized by pale yellow integument and often strikingly iridescent eyes in green, red, or purple. The family comprises approximately 150 described species distributed across all continents except Antarctica, currently classified in four genera with ongoing studies suggesting additional undescribed generic diversity, particularly in African faunas.

Etymology

From Greek chyros (pale yellow, tawny) + myia (fly), referring to the characteristic pale yellow body coloration of most species.

Example

Chyromyidae larvae are typically found in decaying plant material and fungi; adults of the genus Chyromya are frequently collected at flowers or on vegetation in temperate and tropical regions.

Related Terms

• Acalyptratae
• Heleomyzoidea
• Diptera
• Cyclorrhapha
• Integument
• iridescence
• mycophagy

Usage Notes

The family has received limited taxonomic revision; generic boundaries remain provisional and subject to change as regional faunas are studied. The bright eye coloration is a useful field character for distinguishing chyromyids from similarly sized heleomyzoid families such as Heleomyzidae or Sphaeroceridae. Larval biology is poorly known but appears to involve saprotrophic feeding in decaying vegetation and fungal substrates.