SPECIES ID / Invertebrates

True Flies

Aquatic Snipe Flies

  • 4 species in North America
Phylum: Arthropoda
Class: Insecta
Order: Diptera
Family: Athericidae

Identification Tips:

• First 7 segments of abdomen each have a pair of protrusile prolegs
• Two stout tails at end of abdomen
• No distinct head
• Two fang-like mouth parts protrude from thorax

Life History:

• Larvae found in swift, well oxygenated water of rivers and streams
• Crawl and burrow among stones, aquatic vegetation or organic debris
• Predatory on soft-bodied invertebrates

POLLUTION TOLERANCE
Very Sensitive Somewhat Sensitive Facultative Somewhat Tolerant Very Tolerant
  Most      

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Primary Information Source:
Voshell, J. Reese. 2002. A Guide to Common Freshwater Invertebrates of North America. McDonald and Woodward Publishing Company. Blacksburg, Virginia.