Species lysianassa
Metapenaeus lysianassa
- Distomedian petasma projection with fully developed or vestigeal apical
filament
- Thelycum of impregnated female usually with white conjoined pads
- Rostrum wide and short, not reaching to distal end of basal antennular
segment
- Thelycum with ovoid anterior and lateral plates of subequal size
- Apical filaments of petasma vestigial, represented by a pair of rounded
bosses