Chorsia quentini Kobes

Chorsia quentini Kobes, 2010b: 13.

Diagnosis

This species is relatively large for the genus and atypically patterned apart from white marking subapically on the forewing underside. The upperside of the forewing is rich brown with a paler pinkish grey zone medially that has a curved basal boundary that runs obliquely to the dorsum over its posterior part. There is a subapical white dash and a postmedial triangle of the same colour on the costal margin. The male genitalia are similar to those of williamsi Holloway though have a basal digitate spine on the valve costa rather than one on the sacculus. There are a few sclerites in the aedeagus vesica, in particular a serrate one on the most distal diverticulum; the aedeagus is relatively short and broad.

Geographic range

Sumatra, Thailand, Borneo.

Habitat preference

The species was overlooked as a Chorsia by the author, but had been taken infrequently in lowland forest in Brunei and on G. Santubong in Sarawak. A single specimen was recorded at 50m in secondary (10 years) alluvial forest at 50m on the banks of the S. Melinau during the Mulu survey. The highest records are from 300m. It occurs also in Sumatra and Thailand (Kononenko & Pinratana, 2005, plate 15: 29).

Taxonomic Note

Chorsia quentini Kobes (Plate 6, Fig 128) Chorsia quentini Kobes, 2010b: 13. This species is relatively large for the genus and atypically patterned apart from white marking subapically on the forewing underside. The upperside of the forewing is rich brown with a paler pinkish grey zone medially that has a curved basal boundary that runs obliquely to the dorsum over its posterior part. There is a subapical white dash and a postmedial triangle of the same colour on the costal margin. The male genitalia are similar to those of williamsi Holloway though have a basal digitate spine on the valve costa rather than one on the sacculus. There are a few sclerites in the aedeagus vesica, in particular a serrate one on the most distal diverticulum; the aedeagus is relatively short and broad. The species was overlooked as a Chorsia by the author, but had been taken infrequently in lowland forest in Brunei and on G. Santubong in Sarawak. A single specimen was recorded at 50m in secondary (10 years) alluvial forest at 50m on the banks of the S. Melinau during the Mulu survey. The highest records are from 300m. It occurs also in Sumatra and Thailand (Kononenko & Pinratana, 2005, plate 15: 29).

Genitalia: