This specimen has tarsal claws (Tarsal claw: The claws at the tip of the tarsus, on an insect's "foot.") with 7 denticles (
Denticle: Small tooth-like projects, often appearing like serrations on the tarsal claws of certain mayfly nymphs.) and tubercles (
The denticles on the tarsal claw of this Ephemerella
nymph are highlighted in red.
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.) on abdominal segments 4-7 only. It keys to Serratella micheneri, as do some other specimens from the same collection that lacked the dorsal (Dorsal: Top.) stripe.
A few (not all) of the abdominal tubercles on this Ephemerella needhami
nymph are circled. They are especially large in this species.
This mayfly was collected from Mystery Creek #199 on July 28th, 2019 and added to Troutnut.com on July 30th, 2019.
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