Mouth opening within common atriobuccal opening. Monoserial radula with one pair of denticles per tooth. Tubular ventrolateral foregut glandular organs with bundles of glandular cells that come out at the end of each duct (type A according to SalviniPlawen 1978 or type Acanthomenia according to Handl & Todt 2005) Midgut without constrictions. Secondary genital opening unpaired. Without copulatory stylets. Without respiratory folds. With a dorsoterminal sense organ.
Type species: Amboherpia heterotecta Handl & SalviniPlawen, 2002