|1a. Eyes small and set far forward on head; margin of head behind eye forms a right angle; body very elongate.
|1b. Eyes large, set farther back; margins of head rounded; body less elongate.
|2a. Lacinia of maxilla terminating in a large single tooth; pronotal setae sparsely clustered or single and restricted to corners; numerous intrasegmental hairs on cerci.
|2b. Lacinia of maxilla terminating in a single large and a single small tooth; marginal hairs of pronotum numerous at least on anterior and posterior margins; intrasegmental hairs absent from cerci.
|3a. Thick, depressed black hairs laterally on sides of all thoracic sterna.
Obvious darkly "hairy chest"
|3b. Thoracic hairs erect and light colored.|
|4a. Marginal hair fringe of pronotum sparse or absent laterally, not uniform; short hair fringe on posterior margins of abdominal terga not regular or uniform; long fine hairs of cerci shorter than cercal segments; abdomen concolorous or with pale longitudinal median stripe.
There are no keys to nymphs yet.
|4b. Marginal hair fringe of pronotum thick, regular, uniform, nearly complete or sparse only on lateral margins; short hair fringe on posterior margins of abdominal terga uniform and thick; long fine hairs of cerci longer than cercal segments; abdomen nearly all one color or with pale checkered pattern.|
|5a. Abdomen distinctly striped; pronotal hair fringe regular and nearly complete; inner margins of wingpads widely oblique.
|5b. Abdomen concolorous; pronotal hair fringe sparse laterally; inner margins of wingpads slightly oblique.|
ReferencesFigures redrawn from reviewing both of the following publications:
Surdick,RF 1985: Nearctic Genera of Chloroperlinae (Plecoptera:Chloroperlidae). University of Illinois Press, Urbana, IL. 146 pages.
Stewart,KW; Harper,PP 1996: Plecoptera. In: An Introduction to the Aquatic Insects of North America. 3rd ed. Eds: Merritt,RW; Cummins,KW Kendall/Hunt Publishing Company, Dubuque, Iowa, 217-266.
Good LinksKey to Male Chloroperlidae
Key to Female Chloroperlidae