Mayfly Genus Eurylophella (Chocolate Duns)
Taxonomic Navigation -?-
Kingdom Animalia (Animals)
» Phylum Arthropoda (Arthropods)
» Class Insecta (Insects)
» Order Ephemeroptera (Mayflies)
» Family Ephemerellidae (Hendricksons, Sulphurs, PMDs, BWOs)
» Genus Eurylophella (Chocolate Duns)
| Species in Eurylophella |  |  |
| Eurylophella bicolorChocolate Dun | 0 | 0 |
| Eurylophella funeralisChocolate Dun | 0 | 0 |
| Eurylophella lutulentaChocolate Dun | 0 | 0 |
| Eurylophella temporalisChocolate Dun | 1 | 9 |
10 species aren't included.
Common Name
| Match | Common Name |
 | Chocolate Duns |
This is page 2 of specimens of Eurylophella. Visit the main Eurylophella page for:
- The behavior and habitat of Eurylophella.
14 Mayfly Specimens in the Genus Eurylophella:
Eurylophella (Chocolate Duns) Mayfly Nymph
View 3 Pictures
View 3 PicturesRegion: Northeast
Collected Mar 13, 2005
Added Apr 5, 2006
Eurylophella (Chocolate Duns) Mayfly Nymph
View 5 PicturesThis nymph is an extremely early 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.).
View 5 PicturesThis nymph is an extremely early 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.).Region: Upper Midwest
Collected Feb 7, 2004
Added Jan 25, 2006
Eurylophella (Chocolate Duns) Mayfly Nymph
View 2 PicturesIt has the segment 4 gill and abdominal segment 9 is longer than segment 8. I couldn't see abdominal tubercles (
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.), but they may not yet be developed in such an early 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.).
View 2 PicturesIt has the segment 4 gill and abdominal segment 9 is longer than segment 8. I couldn't see abdominal tubercles (
View Full SizeA few (not all) of the abdominal tubercles on this Ephemerella needhami nymph are circled. They are especially large in this species.
Region: Upper Midwest
Collected Mar 10, 2004
Added Jan 19, 2006
Eurylophella (Chocolate Duns) Mayfly Nymph
View 3 PicturesThis nymph is an extremely early 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.).
View 3 PicturesThis nymph is an extremely early 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.).Region: Upper Midwest
Collected Feb 7, 2004
Added Jan 25, 2006
Eurylophella (Chocolate Duns) Mayfly Nymph
View 3 PicturesLooking at this specimen under a microscope revealed prominent sharp abdominal tubercles (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.). Also, abdominal segment 9 is distinctly longer than abdominal segment 8, meaning this is definitely a Eurylophella nymph.
View 3 PicturesLooking at this specimen under a microscope revealed prominent sharp abdominal tubercles (A few (not all) of the abdominal tubercles on this Ephemerella needhami nymph are circled. They are especially large in this species.
Region: Upper Midwest
Collected Feb 7, 2004
Added Jan 25, 2006
Eurylophella (Chocolate Duns) Mayfly Nymph
View 3 PicturesThis nymph is an extremely early 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.).
View 3 PicturesThis nymph is an extremely early 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.).Region: Upper Midwest
Collected Feb 7, 2004
Added Jan 25, 2006
Eurylophella (Chocolate Duns) Mayfly Nymph
View 3 PicturesThis nymph is an extremely early 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.).
View 3 PicturesThis nymph is an extremely early 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.).Region: Upper Midwest
Collected Feb 7, 2004
Added Jan 25, 2006
Eurylophella (Chocolate Duns) Mayfly Nymph
View 3 Pictures
View 3 PicturesRegion: Upper Midwest
Collected Feb 7, 2004
Added Jan 25, 2006
Eurylophella (Chocolate Duns) Mayfly Nymph
View 5 Pictures
View 5 PicturesRegion: Upper Midwest
Collected Jan 31, 2004
Added Jan 25, 2006
Eurylophella (Chocolate Duns) Mayfly Nymph
View 4 PicturesClose examination under a microscope easily showed abdominal tubercles (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.).
View 4 PicturesClose examination under a microscope easily showed abdominal tubercles (A few (not all) of the abdominal tubercles on this Ephemerella needhami nymph are circled. They are especially large in this species.
Region: Upper Midwest
Collected Jan 31, 2004
Added Jan 25, 2006
New features!
