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Chlumetia malaysiana sp. n.

Chlumetia malaysiana
(holotype; Peninsular Malaysia)


10-11mm. The forewings are medium to dark brown, more uniform than in other species; the fasciation is typical of the genus but the submarginal, though entire, is dentate, irregular in width, at places reduced to a fine line. In the male abdomen the 8th tergite terminates in two narrow, triangular, setose processes. In the male genitalia the aedeagus bears a prominent dorsal process centrally; the genitalia are massive relative to those of congeners except for taxa in Sulawesi (probably C. corticea Snellen) and the Philippines, both lacking the aedeagus process; the valves are squarish with the dorsal margin folded over, and costal and apical projections as illustrated. The Sulawesi species has broader triangular processes from the male eighth tergite; the aedeagus is bulbous centrally; the valve is similarly folded, massive, but more triangular and broadly bibbed apically (Figs. 90, 93). The Philippines species is described below.

In the female genitalia the eighth segment is diagnostically sclerotised in a laterally compressed area posterior to the ostium and connected to it by a band of sclerotisation; the ductus is broad, lightly sclerotised, the narrow bursa broadly based on it and containing two small signa; the appendix bursae is weak, arising from the base of the bursa on a duct much longer than the genitalia overall. In the Sulawesi species the eighth segment is more heavily sclerotised and the base of the ductus is modified into a scrolled invagination (Fig. 96); the duct to the appendix bursae is much shorter. A new species from Melanesia, represented by females only. is described below.

Holotype Goping, PERAK [Malaysia], 188 (Kunstler), noctuid slide 11172.

Paratype . Data as holotype, BM noctuid slide 1103.

Taxonomic notes. Two further species belong to this group with massive male genitalia and complexities of the ninth segment of the female. They are described as follows:

Chlumetia montalbana sp. n. (Fig. 91). 10mm. The facies is as in malaysiana except the area basa1 to the antemedial is much darker brown. Differences are in the male genitalia and abdomen: the eighth tergite lacks a distal pair of processes; the aedeagus lacks bulges or processes; the valve is more or less rectangular but with a diagnostic pair of processes on the ventral margin. Holotype  Montalban, Rizal, LUZON, 26 March 1914 (A.E. Wileman), BM noctuid slide 1173.

Chlumetia melanesiana
sp. n. (Fig. 95). 11mm. The forewing markings are generally as in other species of the group but the post- and antemedials are diffusely double, darker than the ground, with a paler band distad, giving a more striped appearance to the forewing. The female genitalia share the enlargement and lateral compression of the ninth segment but the ductus bursae, though with a subbasal dorsal lobe, is less elaborate, more slender; the duct to the appendix arises very much more basally on the ductus. Holotype  SOLOMON IS., Guadalcanal, Honiara, 18-29 Sept. 1953 (J.D. Bradley) BM 1954-222, BM noctuid slide 11008. Paratypes: 2 as holotype. There is also a female from Milne Bay, S.E. New Guinea (slide 11004).

Geographical range. C. malaysiana is at present only known from Peninsular Malaysia. However, the geography of the species group as a whole suggests that it, or a related species, is likely to be discovered in Borneo.

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