Animal Phylum Arthropoda (Arthropods)
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Kingdom Animalia (Animals)
» Phylum Arthropoda (Arthropods)
| Class in Arthropoda |  |  |
| ArachnidaMites and Spiders | 2 | 9 |
| Crustacea-MalacostracaCrayfish, Scuds, and Sowbugs | 8 | 39 |
| InsectaInsects | 713 | 3733 |
Common Name
| Match | Common Name |
 | Arthropods |
This is page 71 of specimens of Arthropoda. Visit the main Arthropoda page for:
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730 Arthropod Specimens:
Ephemerellidae (Hendricksons, Sulphurs, PMDs, BWOs) Mayfly Nymph
View 3 PicturesThis is a really really really really tiny mayfly nymph. It has gills on abdominal segments 3-7 in the characteristic orientation for the Ephemerellidae family, and it has no fain tail as best I can tell, just uniform tail coverage with small black hairs of equal length. I think this one's too young to identify.
View 3 PicturesThis is a really really really really tiny mayfly nymph. It has gills on abdominal segments 3-7 in the characteristic orientation for the Ephemerellidae family, and it has no fain tail as best I can tell, just uniform tail coverage with small black hairs of equal length. I think this one's too young to identify.Region: Upper Midwest
Collected Mar 10, 2004
Added Jan 19, 2006
Paraleptophlebia (Blue Quills) Mayfly Nymph
View 4 PicturesThis one is missing several gills due to capture damage.
View 4 PicturesThis one is missing several gills due to capture damage.Region: Upper Midwest
Collected Feb 5, 2004
Added Jan 25, 2006
Paraleptophlebia (Blue Quills) Mayfly Nymph
View 3 Pictures
View 3 PicturesRegion: Upper Midwest
Collected Mar 9, 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 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
Ephemerellidae (Hendricksons, Sulphurs, PMDs, BWOs) Mayfly Nymph
View 3 PicturesThis is a tiny Ephemerellid mayfly about 3mm long, certainly 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.) of whatever species it belongs to. I looked at it under a microscope and determined that it has gills on abdominal segments 3-7, no 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.), and only minute black hairs on the tails as far as I can tell.
View 3 PicturesThis is a tiny Ephemerellid mayfly about 3mm long, certainly 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.) of whatever species it belongs to. I looked at it under a microscope and determined that it has gills on abdominal segments 3-7, no 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 5, 2004
Added Jan 25, 2006
Maccaffertium (March Browns and Cahills) Mayfly Nymph
View 3 Pictures
View 3 PicturesRegion: Upper Midwest
Collected Jan 13, 2004
Added Jan 25, 2006
Ephemerella invaria (Sulphur) Mayfly Nymph
View 2 Pictures
View 2 PicturesRegion: Upper Midwest
Collected Jan 13, 2004
Added Jan 25, 2006
Ephemerellidae (Hendricksons, Sulphurs, PMDs, BWOs) Mayfly Nymph
View 3 Pictures
View 3 PicturesRegion: Upper Midwest
Collected Jan 13, 2004
Added Jan 25, 2006
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