• 6 species known in North America
| Phylum: | Arthorpoda |
| Class: | Insecta |
| Order: | Diptera |
| Family: | Deuterophlebiidae |
Identification Tips:
Larvae
• 3-6 mm body length
• Flattened body
• Distinct head with forked antennae that are much longer than the head
• 7 pair of fleshy lobes protrude from side of abdomen
• Several rows of tiny hooks encircle lobes
Life History:
Larvae
• Found in fast mountain streams with high dissolved oxygen
• Occupy cracks and depressions on surface of rocks, usually near water surface
• Usually in currents of greater than 75 cm/second
• Larval stage only lasts a few weeks (persist as eggs for most of year)
Adults
• Emerge from pupae in early morning and only live for 1-2 hours
• Several generations per year at low elevation; just one at high elevation
| 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.
