[1] Males are recognized from other two-clawed Acanthogonatus by the bulb with a lateral keel delimiting a concave area; females by the spermathecae with an almost conical basal mound and its duct arising from its tip (similar spermathecae occur in A. franki).

With A. campanae and A. pissii, A. huaquen is one of the most common spiders of the genus in central Chile (Regions IV and V).

Goloboff (1995) states there may be more than one species included in his description study.

Specimens from Quereo and Caleta Oscura were observed to have longer, spiraled spermathecal ducts; they may represent a different species.

This species builds open burrows, lined with a dense layer of silk.