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 73 of specimens of Arthropoda. Visit the main Arthropoda page for:
- The behavior and habitat of Arthropoda.
- 120 underwater pictures of Arthropoda.
- 67 streamside pictures of Arthropoda.
730 Arthropod Specimens:
Ephemerella invaria (Sulphur) Mayfly Nymph
View 3 Pictures
View 3 PicturesRegion: Upper Midwest
Collected Jan 13, 2004
Added Jan 25, 2006
Ephemerella invaria (Sulphur) 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
Ephemerella invaria (Sulphur) Mayfly Nymph
View 2 Pictures
View 2 PicturesRegion: Upper Midwest
Collected Jan 13, 2004
Added Jan 25, 2006
Ephemerella aurivillii Mayfly Nymph
View 3 PicturesExamination of this specimen under a microscope revealed that it does have small 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.), 2-banded femora (Femur: The main segment of an insect's leg close to the body, in between the tibia and the trochanter.), and banded tails.
View 3 PicturesExamination of this specimen under a microscope revealed that it does have small 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 Feb 5, 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
Eurylophella (Chocolate Duns) Mayfly Nymph
View 5 Pictures
View 5 PicturesRegion: Upper Midwest
Collected Jan 31, 2004
Added Jan 25, 2006
Maccaffertium (March Browns and Cahills) Mayfly Nymph
View 3 Pictures
View 3 PicturesRegion: Upper Midwest
Collected Jan 14, 2004
Added Jan 25, 2006
Ephemerella invaria (Sulphur) Mayfly Nymph
View 4 Pictures
View 4 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
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