Key:  Preliminary Key to Gammarid Amphipods

Taken primarily from  Kozloff, 1987, 1996 p. 348 (Copyright 1987, 1996, University of Washington Press.  Used in this web page by permission of University of Washington Press)
  Original key created by Craig P. Staude (see reference above)

Jump to:
Lower taxonomic level	Main Page	Alphabetic Index	Systematic Index	Glossary

Uropod 3 with a single ramus which never greatly exceeds the length of the peduncle (if there is a second ramus, it is scarcely noticeable)	Proceed to Key I
Uropod 3 biramous; both rami shorter than the peduncle (photo)	Proceed to Key II
Uropod 3 biramous; at least one ramus equal to or longer than the peduncle	Proceed to Key III
Uropod 3 absent or lost	Proceed to Key IV

(All keys above refer to gammarid amphipods--consult the individual keys)