Metallolophia cineracea Holloway, 1996

Han, Galsworthy, A. & Xue, 2005, A revision of the genus Metallolophia Warren (Lepidoptera, Geometridae, Geometrinae), Journal of Natural History 39 (2), pp. 165-195 : 177-178

Metallolophia cineracea Holloway

( Figures 20, 21 , 49, 74) Metallolophia cineracea Holloway, 1996: 204 , Figure 148, pl. 5, [ Figures 19, 20 ]. Holotype „, Borneo : Brunei, Telisai ( BMNH).

Description

Length of fore wing: „ 16 mm; ♀ 15–20 mm. Frons brown, terminal half of palpus grey, third segment of female palpus of medium length. Antenna lamellate in both sexes. Abdominal crests with metallic glossy sheen. Wing shape as in previous species, with colour more grey or greyish brown, irrorated with many more dark blackish scales. Markings on both wings and both upper- and underside same as in M. variegata Holloway , but subterminal lines missing; discal spot, although of same shape as in that species, much weaker on upperside; underside much darker, purplish grey, subterminal band rather indistinct.

Male genitalia. Very similar to previous species, differing only in having the apical part of the valva narrower, the central basal lobe of the valva somewhat quadrate and the blade-like saccular process slightly broader.

Female genitalia ( Figure 74 ). Very similar to those of M. albescens Inoue. Ductus bursae somewhat thinner and shorter, corpus bursae a little bigger.

Specimens examined

Brunei: PARATYPE: 1♀, 15 m, Telisai, sandy heath forest and Gymnostoma , 13 December 1979, coll. M. G. Allen ( BMNH) .

Distribution

Brunei.

Remarks

It is possible that M. cineracea and M. variegata may represent seasonal forms or ecologically separated forms of the same species, judging from the similarity of the genitalia, size and pattern, but more collecting, particularly in the areas between the locations where the type material originates, would be necessary to establish this.

Figures

Figures 2–21. Adults of Metallolophia. (2–5) M. vitticosta (Walker) (BMNH). (2, 3) „: (2) upperside, (3) underside. (4, 5) ♀: (4) upperside, (5) underside. (6, 7) M. opalina (Warren) (lectotype, ♀, BMNH): (6) upperside, (7) underside. (8, 9) M. albescens Inoue (paratype, „, IZCAS): (8) upperside, (9) underside. (10, 11) M. albescens ssp. nov. (holotype, „, IZCAS): (10) upperside, (11) underside. (12, 13) M. purpurivenata sp. nov. (holotype, „, IZCAS): (12) upperside, (13) underside. (14, 15) M. subradiata (Warren) (holotype, ♀, BMNH): (14) upperside, (15) underside. (16, 17) M. medullosa Inoue (holotype, „, NSMT): (16) upperside, (17) underside. (18, 19) M. variegata Holloway (paratype, „, BMNH): (18) upperside, (19) underside. (20, 21) M. cineracea Holloway (paratype, ♀, BMNH): (20) upperside, (21) underside. Natural size.

Figures 69–74. Female genitalia. (69) M. opalina (IZCAS Geom-00103). (70) M. albescens (IZCAS Geom- 00030). (71) M. purpurivenata sp. nov., holotype (IZCAS Geom-00109). (72) M. subradiata (BMNH Geom- 20968). (73) M. medullosa (ZFMK 2740). (74) M. cineracea (BMNH). Scale bar: 1 mm.