Penaeus (Fenneropenaeus) merguiensis  (De Man, 1888)

Adrostral groove and crest not reaching as far as epigastric teeth

High rostral crest

Gatroorbital crest extending over middle third to half (1/3) of distance between hepatic spine and orbital margin

PETASMA with distomedian projections overhanging distal margin of costae; free border of ventral costae serrate near apex; outer surface of lateral lobes with several rows of minute tubercles.

THELYCUM with lateral plates, their median margins forming tumid lips beset with papillae on their inner surface; anterior process slightly concave, rounded distally; posterior process illcalcified, almost completely inserted between lateral plates.

Distinctive character : Carapace smooth. Rostrum armed with 6 to 9 teeth on dorsal and 3 to 6 on ventral margin; blade of rostrum high, broadly triangular in sharp.

Colour : milky white