Aiteng is a genus comprising three species of sea slug, A. ater and A. mysticus being found in intertidal zones while A. marefugitus is fully terrestrial.

The generic name Aiteng is derived from the name of a black puppet Ai Theng, which is one of the shadow play (Nang yai) puppets in southern Thailand.

[1] Swennen & Buatip (2009)[1] tentatively classified Aitengidae within the Sacoglossa,[1] but they noted that some characteristics of the nervous system are similar to those of the Cephalaspidea and Acochlidioidea (mentioned as Acochlidea).

[4] Philippe Bouchet (2010)[5] classified Aitengidae within the superfamily Hedylopsoidea.

Aiteng ater lives "amphibiously" in mangrove forests in the intertidal zone, on the mud.