- 34 species in North America
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Ephemeroptera |
| Family: | Ameletidae |
Identification Tips:
•Plate-like gills on each side of most abdominal segments
Antennae short: less than twice width of head
• All 3 tails of equal length and have a dark band near midpoint
• Length 6-14 mm
• Larvae can be very difficult to distinguish from Small Minnow Mayflies or Primitive Minnow Mayflies
Life History:
• Typically in flowing streams and rivers
• Among gravel, debris or vegetation
• Very strong swimmers, can nagivate substancial currents
• Feed on collected or scraped organic material
• One generation per year for most species
| 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.
