FAO Species Identification Guide for Fishery Purposes Western

1080 Crabs
9a. No tail fan (telson and uropods) present; eye peduncles broad and flat, cornea inserted
laterally on peduncle (Fig. 109) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lomidae
(family not recorded from the area so far)
9b. Distinct tail fan (telson and uropods) present; eye peduncles normal; cornea inserted
terminally on peduncle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . → 10
10a. Carapace circular, subcircular to longitudinally ovate; rostrum short to absent; most of
abdomen tucked underneath carapace (Fig. 110) . . . . . . . . . . . . . . . . . . . Porcellanidae
10b. Carapace longitudinally rectangular to longitudinally ovate, rarely circular; rostrum
distinct; most of abdomen not tucked underneath carapace . . . . . . . . . . . . . . . . . . → 11
Fig. 109 Lomidae Fig. 110 Porcellanidae
11a. Antennular peduncle with 4 movable articles;
telson divided into 2 or more smaller
plates (Figs 111a and 112) . . . . . . . . Galatheidae
11b. Antennular peduncle with 5 movable articles;
telson entire, not divided into smaller
plates (Figs 111b and 113) . . . . . . . Chirostylidae
List of Families LIST OF FAMILIES OF MARINE BRACHYURA AND CRAB-LIKE ANOMURA
PRESENTLY RECOGNIZED
Note: the following list also includes 5 families of Brachyura and a single family of anomuran crab which
have not been recorded yet from the Western Central Pacific. They are included in the list and above keys
since it is likely that some of these families may be discovered in the future in the area. These families are
marked in the list by an asterisk (*).
The symbol is given for those families which are treated further in this contribution.
Infraorder BRACHYURA Latreille, 1803
ATELECYLIDAE Ortmann, 1893
BELLIIDAE Dana, 1852 (= Acanthocyclidae Dana, 1852)
BYTHOGRAEIDAE Williams, 1980
CALAPPIDAE De Haan, 1833
CAMPTANDRIIDAE Stimpson, 1858
CANCRIDAE Latreille, 1803 (= Trichoceridae Dana, 1852)
a) divided into 2 or
more small plates
b) not divided into
small plates
Fig. 111 telson (dorsal view)
Fig. 112 Galatheidae Fig. 113 Chirostylidae