FAO Species Identification Guide for Fishery Purposes Western

Penaeidae 891
Sergestidae: size small; rostrum very short; body strongly compressed laterally; shell soft; last 2 pairs of legs
reduced or absent.
Stenopodidae: third pincer very large and massive; males and females without large copulatory organ on
first pair of pleopods or posterior thoracic sternites, respectively; females carry the eggs on the abdomen
until hatching.
Shrimps of the infraorder Caridea: third leg without pincer; second abdominal pleuron (lateral plate) greatly
expanded, overlapping posterior part of first pleuron and anterior part of third pleuron; males and females without
large copulatory organ on first pair of pleopods or posterior thoracic sternites, respectively; females carry the eggs
on the abdomen until hatching.
appendix masculina appendix
interna
appendix
interna
lateral
projection
Aristeidae Penaeidae Solenoceridae
endopod of 2 nd tubercle
tubercle
pleopod in males
Solenoceridae Aristeidae
eyes
Penaeidae
Key to the genera of Penaeidae occurring in the area
1a. Rostrum with lower teeth
(Fig. 1) . . . . . . . . . . . . . . → 2
1b. Rostrum without lower
teeth (Fig. 2) . . . . . . . . . . . → 3
2a.
teeth on
Abdomen with many lower border
deep pubescent grooves
(Fig. 3) . . . . . . . . Heteropenaeus
(a single species, H. longimanus)
2b. Abdomen glabrous and
smooth (Fig. 4) . . . . . . . Penaeus
3a. Telson with a pair of large subapical
fixed lateral spines (Fig. 5) . . . . . . → 4
3b. Telson without large subapical
fixed lateral spines . . . . . . . . . . . . → 7
rostrum (lateral view)
Fig. 1 Penaeus
Fig. 3 Heteropenaeus longimanus
(after Hall, 1961)
Fig. 4 Penaeus
no lower teeth
rostrum (lateral view)
Fig. 2 Metapenaeus
movable
spines
movable
spines
fixed
spine
fixed
spine
fixed
spine
a) Penaeopsis b) Metapenaeopsis c) Parapenaeus
Fig. 5 telson (dorsal view)
(after Lee and Yu, 1977)