Download PDF as one large file - AToL Decapoda

Genus Pinnotheres Bosc, 1801-1802
Key to females of species (except for P. hemp hi Hi)
[Adapted from Rathbun, 1918]
Family Pinnotheridae 685
1. . Palp of outer (third) maxilliped large, nearly or quite half as large as merus
P. maculatus
Palp of outer maxilliped small, not nearly half as large as merus 2
2. (1) Carapace wider than long P. ostreum
Carapace as long as or longer than wide 3
3. (2) Dactyli of all walking legs similar, falcate P. shoemakeri
Dactylus of fourth walking leg of shape different from others, almost straight,
except for slender, curved, horny tip P. moseri
Key to males of species (except for P. moseri)
| Adapted from Rathbun, 19181
1. Carapace wider than long. 2
Carapace as long as or longer than wide 3
2. (1) Carapace octagonal; sternum sharply cristate P. hemphilli
Carapace suborbicular; sternum not sharply cristate P. ostreum
3. (1) Postlateral portion of branchial region inclined abruptly in steep plane, oblique to
dorsal surface of carapace, in which it forms reentering angle P. shoemakeri
Branchial region gradually inclined downward toward margin; carapace with 4
large, persistent, white spots P. maculatus