Species latisulcatus
Penaeus (Melicertus) latisulcatus

- Telson armed usually with 3 pairs of spinules
- Adrostral sulcus as wide as post-rostral carina
- Telson armed with 3 pairs of movable spines
- Adrostral carina and groove long, extending almost to posterior margin
of carapace, the groove wide
- Gastrofrontal crest present
- Gastrofrontal groove bifurcate posteriorly
- Petasma with distomedian projection reaching to or slightly overhanging
distal margin of costae
- Ventral costae largely broadened apically unarmed on their free border
but incised on thier attached border
- Outer surface of lateral lobes not tuberculate
- Thelycum with lateral plates their anteromedian angles divergent
- Anterior process with anterolateral edge raised forming 2 subtriangular
or cylindrical projections
- posterior process triangular, its anteior edge raised
- Its lateral ridges delimiting a median depressed area
