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Mayfly Species Ephemerella invaria (Sulphur Dun)

Pictures Below

This is page 3 of specimens of Ephemerella invaria. Visit the main Ephemerella invaria page for:

  • The behavior and habitat of Ephemerella invaria.
  • 15 underwater pictures of Ephemerella invaria.

Pictures of 45 Mayfly Specimens in the Species Ephemerella invaria:

Specimen Page:1234...6
Ephemerella invaria (Sulphur Dun) Mayfly NymphEphemerella invaria (Sulphur Dun) Mayfly Nymph View 4 PicturesI looked at this nymph closely under a microscope to ascertain some key features I was wondering about in previous photographs of similar specimens. It definitely does have the fan-tail characteristic of the Ephemerella genus. It also has strongly 2-banded tibiae (
The tibia of this Isonychia bicolor mayfly spinner is highlighted in red.
The tibia of this Isonychia bicolor mayfly spinner is highlighted in red.
Tibia: A middle segments in the leg of an insect, located between the femur and the tarsus.
)
and definite tiny abdominal tubercles (
A few (not all) of the abdominal tubercles on this Ephemerella needhami nymph are circled.  They are especially large in this species.
A few (not all) of the abdominal tubercles on this Ephemerella needhami nymph are circled. They are especially large in this species.
Tubercle: Various peculiar little bumps or projections on an insect. Their character is important for the identification of many kinds of insects, such as the nymphs of Ephemerellidae mayflies.
)
.
Collected February 7, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006
Specimen Page:1234...6
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