Comprehensive Description
Read full entryThese are stout flies, medium to large, that are very bristly, particularly around the posterior of the abdomen. They are often grey with checkered patterns, but sometimes appear solid black or brown. The larvae are parasitoid on numerous other insects, including spiders and millipedes. The adults are avid feeders on nectar. There are many species in this family, and they are common visitors of many prairie wildflowers.
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