GENUS : PENAEUS
Adrostral groove and carina long, reaching posteriorly
much beyond midlength, usually almost to posterior margin of carapace,
gastrofrontal carine present
Thelycum with a circular to subtriangular plate on seventh thorasic
sternite and lateral plates on eight thoracis sternite
Thelycum with large triangular plate of seventh thoracic
sternite and a pouch-like structure on eight thoracis sternite
Adrostral groove and carina short, not reaching posteriorly much beyond
the midlength of carapace, gastrofrontal carina absent
Hepatic carina absent or ill defined
Hepatic carina prominent
Thelycum of closed type
Petasma with ventral costa long reaching distal
margin of lateral lobe
Copyright 1998 Bioinformatics Centre,
National Institute of Oceanography, Dona Paula, Goa, India