Download PDF as one large file - AToL Decapoda

Family Sicyoniidae
Genus Sicyonia H. Milne Edwards, 1830
Key to species
[Adapted from Williams, 1984]
Family Sicyoniidae 109
1. First pereopod with basis and ischium armed with spine; abdominal somite 2 with
dorsal carina notched at junction of transverse sulci 2
First pereopod with basis and ischium unarmed; abdominal somite 2 with dorsal
carina unnotched., 3
2. (1) Rostrum (excluding tip) with 2 dorsal teeth anterior to posterior orbital margin; V
carina of carapace with 3 teeth, first tooth smallest S. laevigata
Rostrum (excluding tip) with 3 dorsal teeth; carina of carapace with 3 evenly
spaced, subequal teeth S. parti
3. (1) Carapace with 3 large dorsal teeth behind hepatic spine S. brevirostris
Carapace with 1 or 2 large dorsal teeth behind hepatic spine 4
4. (3) Two teeth on dorsal carina behind hepatic spine ...S. typica
One tooth on dorsal carina behind hepatic spine. 5
5. (4) Pleura of abdominal somite 4 with both antero- and posteroventral margins spined
or angular
S. dorsalis
Pleura of abdominal somite 4 with posteroventral margin rounded 6
6. (5) Antennal spine long, acute, buttressed; pleura of abdominal somites 1-4 with ventral
spines laterally recurved S. burkenroadi
Antennal spine short, often minute, not buttressed; pleura of abdominal somite 1
rounded, 2-4 angulate, but without laterally recurved marginal spines S. stimpsoni