» Family Heptageniidae (March Browns, Cahills, Quill Gordons)
4 genera (Anepeorus, Macdunnoa, Raptoheptagenia, Spinadis)
aren't included.
Common Name
This is page 6 of specimens of Heptageniidae. Visit the main Heptageniidae page for:
- The behavior and habitat of Heptageniidae.
- 11 underwater pictures of Heptageniidae.
Pictures of 215 Mayfly Specimens in the Family Heptageniidae:
Specimen Page:1...
567...
23 Epeorus pleuralis (Quill Gordon) Mayfly Nymph
View 4 PicturesThis Epeorus pluralis dun is recently deceased in these photos. I decided not to photograph several lively, less mature nymphs. This one was ready to hatch, as indicated by the black wing pads (
The wing pads on this final instar
Baetidae mayfly nymph are extremely dark.
Wing pad: A protrusion from the thorax of an insect nymph which holds the developing wings. Black wing pads usually indicate that the nymph is nearly ready to emerge into an adult.). I believe it had not been dead long enough to lose its natural coloration. Maccaffertium vicarium (March Brown) Mayfly Nymph
View 4 PicturesI photographed this Maccaffertium vicarium nymph shortly after it molted to a new instar (Instar: Many invertebrates molt through dozens of progressively larger and better-developed stages as they grow. Each of these stages is known as an instar. Hard-bodied nymphs typically molt through more instars than soft-bodied larvae.) in my holding container. Many nymphs take on drastically different coloration immediately after molting, and this species is no exception. Specimen Page:1...
567...
23