Mayfly Species Ephemerella subvaria (Hendrickson)

Mayflies Caddisflies Stoneflies

Taxonomic Navigation -?-

Kingdom Animalia (Animals)

» Phylum Arthropoda (Arthropods)

» Class Insecta (Insects)

» Order Ephemeroptera (Mayflies)

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

» Genus Ephemerella (Hendricksons, Sulphurs, PMDs)

» Species subvaria (Hendrickson)

Common Names

Match	Common Name
	Hendrickson
	Dark Hendrickson
	Red Quill Spinner
	Red Quill
	Lady Beaverkill
	Borcher Drake
	Beaverkill
	Whirling Dun

This is page 5 of specimens of Ephemerella subvaria. Visit the main Ephemerella subvaria page for:

• The behavior and habitat of Ephemerella subvaria.
• 24 underwater pictures of Ephemerella subvaria.
• 4 streamside pictures of Ephemerella subvaria.

Pictures of 34 Mayfly Specimens in the Species Ephemerella subvaria:

Specimen Page:12345

Ephemerella subvaria (Hendrickson) Mayfly Nymph View 3 PicturesThis is another peculiar brownish Ephemerella. It has double-banded tibiae (

The tibia of this Isonychia bicolor mayfly spinner is highlighted in red.

Tibia: A middle segments in the leg of an insect, located between the femur and the tarsus.) and prominent black-fringed 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.).

Collected February 7, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006

Specimen Page:12345

Jargon Defined:

The tibia of this Isonychia bicolor mayfly spinner is highlighted in red.

Tibiae: A middle segments in the leg of an insect, located between the femur and the tarsus.

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.

Useful References: