Toanopsis Prout

Type species: engenes Prout.

This genus is probably closely related to Cerynea. The facies, as in many Cerynea, consists of a uniform brown ground, often of a reddish or vinous tinge, crossed by fine, dark, irregular, zigzag fasciae. The discal marks are also dark and bipunctate. The genus is best defined on characters of the male and female abdomen.

The male abdomen has an eighth segment of the framed corematous type as in Cerynea, but the sternite is more highly developed, with two distinct coremata rather than the shallow pocket seen in most Cerynea. The genitalia are distinguished by very short valves that have a broad distal array of two robust processes and a more delicate setose one that probably represents the cucullus. Those processes show bilateral asymmetry in several of the species.

The female genitalia have the ostium set within a deep pocket that has various modifications on each side such as crinkled folds or general rugosity. The ductus bursae is narrow, sclerotised as in Cerynea. There may be scobination in the corpus bursae, but this is never concentrated into a signum as in some Cerynea (e.g. contentaria, rubra, the latter with the ostium in a slight pocket).

The genus is only known from Sundaland, and the species are all montane or commoner at altitude.