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Didigua alticola sp. n.
Didigua seticornis Walker sensu Holloway, 1976: 23.


Didigua alticola

15-16mm. The forewings are similar to those of heidwigae, rather uniform and lightly marked, but the species is larger and greyer. There is a paler band immediately basal to the submarginal dots as in heidwigae, but the dorsum is not distinctly darkened. The hindwing below has a dark distal lunule and grades darker grey towards the dorsum, features not seen in either heidwigae or seticornis. The male genitalia have a slightly less elongated tegumen than heidwigae. The costal process of the valve is broad, unequally bifid. The aedeagus vesica is extremely elongate, with a large basal cluster of cornuti and, at two-thirds, a large claw-like cornutus at the base of the ductus ejaculatorius. Distal to this the vesica is bent and terminates in a cluster of four smaller cornuti. The female genitalia have a very elongate ductus bursae that is slightly corrugated and sclerotised at the very base and over the distal third as illustrated.

Holotype . SABAH: Mt. Kinabalu, Park H.Q., 1620m, vii-ix.1965, Cambridge Expedition to Mt. Kinabalu 1965 (H.J. Banks, H.S. Barlow & J.D. Holloway), BM noctuid slide 17948.

Paratypes: 1 as holotype, 2 (slide 9069) as holotype but Power Station, 1930m; 2 as holotype but Kiau Gap, 1760m; 1 as holotype but Mesilau, 1500m; 1 (slide 10715) SARAWAK: Gunong Mulu Nat. Park, R.G.S. Exped. 1977-8 (J.D.Holloway et al.), Site 1, January, Camp 4, Mulu, 1790m. 452463, [upper] montane (moss) forest.

Geographical range. Borneo.

Habitat preference. The species is uncommon in upper montane forest.

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