**Mayfly Species Serratella micheneri (Little Western Dark Hendrickson)**

Mayflies

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Taxonomic Navigation -?-

Kingdom Animalia (Animals)

» Phylum Arthropoda (Arthropods)

» Class Insecta (Insects)

» Order Ephemeroptera (Mayflies)

» Family Ephemerellidae (Hendricksons, Sulphurs, PMDs, BWOs)

» Genus Serratella

» Species micheneri (Little Western Dark Hendrickson)

Common Names

Match	Common Name
	Little Western Dark Hendrickson
	Little Dark Hendrickson

Pictures Below ↓

Pictures of 3 Mayfly Specimens in the Species Serratella micheneri:

Serratella micheneri (Little Western Dark Hendrickson) Mayfly Nymph

View 6 Pictures

Collected July 28, 2019 from Mystery Creek #199 in Washington
Added to Troutnut.com by Troutnut on July 30, 2019

Male Serratella micheneri (Little Western Dark Hendrickson) Mayfly Nymph

View 9 PicturesThis specimen has tarsal claws (Tarsal claw: The claws at the tip of the tarsus, on an insect's "foot.") with 7 denticles (

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The denticles on the tarsal claw of this Ephemerella nymph are highlighted in red.

Denticle: Small tooth-like projects, often appearing like serrations on the tarsal claws of certain mayfly nymphs.) and tubercles (

A few (not all) of the abdominal tubercles on this Ephemerella needhami nymph are circled. They are especially large in this species.

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.

Collected July 28, 2019 from Mystery Creek #199 in Washington
Added to Troutnut.com by Troutnut on July 30, 2019

Serratella micheneri (Little Western Dark Hendrickson) Mayfly Nymph

View 6 Pictures

Collected July 28, 2019 from Mystery Creek #199 in Washington
Added to Troutnut.com by Troutnut on July 30, 2019

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Jargon Defined:

View Full Size

The denticles on the tarsal claw of this Ephemerella nymph are highlighted in red.

Denticles: Small tooth-like projects, often appearing like serrations on the tarsal claws of certain mayfly nymphs.

Dorsal: Top.

Tarsal claws: The claws at the tip of the tarsus, on an insect's "foot."

A few (not all) of the abdominal tubercles on this Ephemerella needhami nymph are circled. They are especially large in this species.

Tubercles: 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.