FAO Species Identification Guide for Fishery Purposes Western

892 Shrimps and Prawns
4a. Body densely covered with short hairs, with grooves and crests on carapace obscure
(Fig. 6a); petasma asymmetrical (Fig. 6b) . . . . . . . . . . . . . . . . . . . . . . Metapenaeopsis
4b. Body almost naked, with crests and grooves on carapace distinct (Fig. 7a); petasma
symmetrical (Figs 7b and 8b) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . → 5
asymmetrical
longitudinal suture
a) carapace (lateral view)
Fig. 6 Metapenaeopsis
b) petasma
(ventral view)
vertical suture
a) carapace (lateral view)
Fig. 7 Parapenaeus
b) petasma
(ventral view)
5b. Carapace with longitudinal and vertical sutures (Fig. 7a); telson without movable lateral
spines (Fig. 5c) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Parapenaeus
5a. Carapace lacking longitudinal and vertical sutures (Fig. 8a); telson with movable lateral
spines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . → 6
6a. Rostrum extending far beyond eye; pterygostomian spine present (Fig. 8a); deep water. .Penaeopsis
6b. Rostrum short, not extending beyong eye; pterygostomian spine absent (Fig. 9); on
reefs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Trachypenaeopsis
(a single species, T. richtersii, in the area)
pterygostomian spine
a) carapace (lateral view)
Fig. 8 Penaeopsis
b) petasma
(dorsal view)
Fig. 9 Trachypenaeopsis richtersii
(after Hayashi, 1992)
7a. Third maxilliped with epipod; male petasma asymmetrical (Fig. 10b); pelagic (Fig. 10a) . .Funchalia
(a single species, F. taaningi, in the area)
7b. Third maxilliped without epipod; male petasma symmetrical (Fig. 11b); benthic . . . . . . . . . → 8
8a. Fifth leg without exopod (carapace without longitudinal or vertical sutures, Fig. 11a) . .Metapenaeus
8b. Fifth leg with exopod . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . →9
a) lateral view
Fig. 10 Funchalia taaningi
(after Hayashi, 1992)
b) petasma
(ventral view)
a) carapace (lateral view)
Fig. 11 Metapenaeus
b) petasma
(ventral view)