Taxonomy

This is the same specimen as figured in RTS; W. Malaysia. The badly damaged male holotype of Daristane tibiaria Walker, 1859:194 from Singapore is in the NHM (Mi7290), genitalia slide #14224. It remained unrecognised in the Geometridae until Whalley (1974b:173) applied to the ICZN for the genus Daristane (Walker, 1859) to be suppressed in favour of Striglina. It is available as a subgeneric name (Nye 1974). Only the male holotype was known to Whalley (1976:53). All other specimens seen are more recent.

Description

27mm. A small to medium sized grey brown species speckled with black, largely devoid of distinctive markings apart from a strongly angled median band on the FW. The brown thyridid reticulation is more obvious on the Un. There is a degree of sexual dimorphism in this species, the males having a grey/purple sheen on both Up & Un. In the females the Un of the wings is yellow brown darkening towards the termen (RTS:126).

Distribution & Habitat

China, Assam, Sikkim, W. Malaysia, Singapore, Sabah, Sarawak, Brunei, Labuan, Kalimantan Barat, Java, Philippines. Lowland and hill primary & secondary forest; <1200m

Similar spp.

S. conjuncta Swinhoe, 1906 has a much more patchy appearance in comparison with S. tibiaria and has relatively pale wing fringes. It is similar to S. castaneata Hampson, 1914 but the male genitalia are distinct (Whalley, 1976:53-54; genitalia Pl. 20 fig. 189).

Life History & Pest Status

No information