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Tasta
montana sp. n.
Tasta micaceata Walker sensu Holloway, 1976: 84, part
(fig 666).
15-17mm,
 14-15mm. This is a large, dark species that can be
distinguished primarily by the large, circular ocellus with a relatively narrow
yellow ring and by the male genitalia where the aedeagus vesica has a small
bundle of short, blunt cornuti. The process on the vinculum is deep, with a
relatively shallow ‘U’ shaped depression dorsally. The major digitate
processes on the valve are arranged in a short arc as in micaceata. T. apluta
Prout, represented by the holotype female from G. Kerinci in Sumatra, has
more distinct fasciation and discal mark on the forewing, and a relatively much
smaller ocellus on the hindwing.
Holotype . SABAH: Mt Kinabalu,
‘Power Station’, 1930m vii-ix 1965, Cambridge Expedition to Mt Kinabalu 1965
(H.J. Banks, H.S. Barlow & J.D. Holloway) BM geometrid slide
10551.
Paratypes: 5 as holotype (slide 9366); 2
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 geometrid slide 9367.
Geographical range. Borneo.
Habitat preference. The species is common in upper montane forest (1200-
1930m) on G. Kinabalu and G. Mulu.
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