This is page 3 of specimens of Ephemerella aurivillii. Visit the main Ephemerella aurivillii page for:
- The behavior and habitat of Ephemerella aurivillii.
Pictures of 18 Mayfly Specimens in the Species Ephemerella aurivillii:
Male Ephemerella aurivillii Mayfly Dun
View 9 PicturesThis dun hatched in my aquarium on July 16th from an easily identified nymph collected on July 10th, and it molted into a spinner after I photographed it. The beautiful spinner form is listed as separate specimen. I forgot to photograph the dun with the ruler, but naturally his size is pretty similar to what it was as a spinner. Ephemerella aurivillii Mayfly Nymph
View 9 PicturesI'm pretty sure this is Ephemerella aurivillii. The body is 11mm long, which rules out most other species, and the hind legs seem to be more than 1.5 times longer than the fore legs -- a key characteristic for this species.
This specimen isn't in the best of shape, as it's missing all three tails, but it's the only one of its species I captured in this sample.