Nepa

·noun A genus of aquatic hemipterus insects. The species feed upon other insects and are noted for their voracity;

— called also scorpion bug and water scorpion.

nepa
nĕpa, ae, f. [acc. to Paul. ex Fest. p. 164 and 165 Müll., an African word: Afrorum linguā est anima...

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.
nepa
nepa ae, f African, a scorpion.—The Scorpion (a constellation), Enn. ap. C. ...

An Elementary Latin Dictionary