Download PDF as one large file - AToL Decapoda

Family Pinnotheridae
Key to genera and species
| Based op Rathbun, 1018, and Williams, 1984|
Family Pinnotheridae 681
1. Dactyli of first, second, and third walking legs bifurcate .. Dissodactylus
Dactyli of walking legs simple, acute 2
2. (1) Third walking leg longest and broadest Pinnixa
Third walking leg not longest and broadest 3
3. (2) Walking legs diminishing in size from distinctly largest first to smallest last leg
(carapace about twice as broad as long) Parapinnixa
Walking legs not diminishing in size from first to last leg 4
4. (3) Carapace with 2 longitudinal, impressed lines leading back from middle of upper
margin of orbit; second walking leg longest Fabia
Carapace without 2 longitudinal, impressed lines leading back from middle of upper
margin of orbit; second and third walking legs nearly equal in length 5
5. (4) Dactylus of third maxilliped very small and inserted at end of propodus
-.. , Orthotheres strombi
Dactylus of third maxilliped stiliform and inserted on inner side of propodus 6
6. (5) Buccal mass subquadrate; carapace somewhat orbicular and either smooth and
membranous or firm and covered with short pile Pinnotheres
Buccal mass subtriangular; carapace firm, smooth Pinnaxodes floridensis