Cerasana pagenstecheri Schintlmeister & Lourens

Cerasana lutea Pagenstecher, 1890, Dt. ent. Ztschr. Iris. 3: 14.

Diagnosis

See C. anceps.

Taxonomic Notes

• The widespread species is smaller (21-23mm) than the others, less heavily marked, more yellowish in colour; the discal marks above and below on both wings are usually faint rather than picked out with dark brown. In the male genitalia the valves are symmetrical, bifid, with a small, slender ventral process and a smaller, similar but less sclerotised dorsal process; the aedeagus is straight with a lateral spine at two thirds and a subapical thorn-like spine directed basad (illustrated by Kiriakoff (1968: fig. 22)). The eighth tergite has short, broad lateral lobes and a central, somewhat separated process articulated between the lateral lobes and the tegumen of the genitalia. This central process is long, with straight sides tapering to a square apex. The eighth sternite bears long anteriorly directed apophyses as in the other two species, but also a pair of more anterior, heavily sclerotised triangular processes. Bornean material is restricted to a single male from Sandakan. The name lutea Pagenstecher (1890, Dt. ent. Ztschr. Iris, 3: 14) may be referable: it has not been possible to examine the type (Palawan) but the span of 45mm given for the female is more in accord with this species than with the other two.
• The identity of C. lutea has been uncertain for some time, and Schintlmeister (1993, 1994b) placed it tentatively as a synonym of anceps. He later (Schintlmeister, 2004a) made an extensive but initially unsuccessful search for the type material and concluded that the pragmatic solution would be to apply the name to the small yellowish species as suggested in Part 4. He also recorded it from Vietnam, Thailand (S & P) and (1994b) in Sumatra. The establishment of the status of lutea (see Note 278) has meant that application of the name of lutea to this yellow species is incorrect, requiring its description as a new species, C. >pagenstecheri Schintlmeister & Lourens (2010), with ssp. lechneri Schintlmeister & Lourens (2010) in S. Thailand and S. Vietnam.

Geographical range

S. Thailand, S. Vietnam, Sundaland, Palawan.

Habitat preference

(Lowland).