Cryptolarynx robustusCryptolarynx robustus is a species of beetle of the family Curculionidae. It is found in South Africa, where it is only known from the type locality in the Western Cape province.DescriptionAdults reach a length of about 4.5–5 mm and have an integument black body, with the antennae, tarsi and sometimes tibiae reddish.BiologySpecimens were collected in September, at the bases of plants of Oxalis ''cf. purpureain'' patches of Renosterveld.EtymologyThe species name is derived from the Latin adjective robustus and refers to the stocky appearance of the species.