Aquatic Insect #13

This aquatic insect was captured late yesterday afternoon. It was pretty much expired, but floating on the water's surface, perhaps 15 feet from shore, alongside a fishing pier on Lake Washington. It was 8 mm as measured from the front of its head to the end of its wings. Can you identify it by any of the following:

Order common name:
Order taxonomic name:
Family common name:
Family taxonomic name:
Genus common name:
Lifestage:

Hi zen leecher aka bill w-

Yes, that it is.

IDENTIFICATIONS

Order common name: Caddisfly (zen leecher aka bill w)
Order taxonomic name: ???
Family common name: ???
Family taxonomic name: ???
Genus common name: ???
Lifestage: ???

It is not a pupa.

McNasty-

Yes, it's an adult.

Order common name: Caddisfly (zen leecher aka bill w)
Order taxonomic name: ???
Family common name: ???
Family taxonomic name: ???
Genus common name: ???
Lifestage: Adult (McNasty)

Hi plecoptera419-

I will take and post a photo if the fore and middle legs when I have time later today. As to the antennae, they were accidentally broken off a bit beyond where I cropped the photo, probably in the process of collecting. However, the would have been at least 2 1/2 times the length of the wings.

Hi plecoptera419-





Well, it turns out that dissecting something so small under my stereo microscope without proper tools is a bit more difficult than anticipated. In any event, these are photos of what I believe to be a fore leg, and what I believe to be either a middle leg or a hind leg.

Hi plecoptera419-

Good job. Leptoceridae is correct. The next step should somewhat easier.
Hint: focus on the forewing marking.

Order common name: Caddisfly (zen leecher aka bill w)
Order taxonomic name: ???
Family common name: ???
Family taxonomic name: Leptoceridae (plecoptera419)
Genus common name: ???
Genus taxonomic name: ???
Lifestage: Adult (McNasty)

Excellent work, plecoptera419. I also believe the genus to be Oecetis, and although I also concluded that O. ariva was likely, identifying caddisflies to species from a photo is tends to be speculative at best.

IDENTIFICATIONS

Order common name: Caddisfly (zen leecher aka bill w)
Order taxonomic name: Trichoptera (Taxon)
Family common name: Longhorned Casemaker (Taxon)
Family taxonomic name: Leptoceridae (plecoptera419)
Genus common name: Longhorned Sedge (plecoptera419)
Genus taxonomic name: Oecetis (plecoptera419)
Species: (likely) avara (plecoptera419)
Lifestage: Adult (McNasty)
Sex: Female (Taxon)

Incidentally, for anyone reading this thread, who would like to see how a live Oecetis looks, this one was photographed by by Kevin Hall near Lacey, WA, on July 9, 2010:

It was definitely an adult. A caddisfly pupa looks like this before shedding its pupal exoskeleton:

I understand; no problem on this end.