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Hyposidra
altiviolescens sp. n.
Hyposidra violescens Hampson
sensu Holloway, 1976: 75.
Hyposidra
altiviolescens 
(paratype)
Hyposidra
altiviolescens
apicipuncta
(paratype)
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22-23mm, much larger than violescens (16-17mm), and usually
darker. The forewing discal spot, especially on the underside, is more
distinctly angled chevron-like. The margins of both wings are more angled and
irregular, the forewings more falcate, especially in specimens from G. Kinabalu.
In these the pattern is more variegated, browner, the yellowish white markings
more evident, including a subapical fleck at the angle of the forewing
postmedial. Given these constant differences, the Kinabalu race is distinguished
as H. a. apicipuncta ssp. n. from the typical race from G. Mulu and
mountains in neighbouring Brunei. The male genitalia are larger than those of violescens
but not otherwise distinguished.
Holotype (typical). SARAWAK: Gunung
Mulu Nat. Park, R.G.S Exped. 1977-8 (J.D. Holloway et al.) Site 1,
January, Camp 4, Mulu, 1790m, 452463, [upper montane forest] BM geometrid slide
10387.
Paratypes (typical): 2 BRUNEI: 1615m, Bukit
Retak, montane forest, 9.5.79 and
14.9.79 (Lt. Col. M.G. Allen).
Holotype (ssp. apicipuncta). 1
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) Brit. Mus. 1968-186, BM geometrid slide 9190.
Paratypes (ssp. apicipuncta): 2 as
holotype; 1 B.N. BORNEO, Mt
Kinabalu,
Marei Parei, 5000ft, 30.4.1929 (H.M. Pendlebury).
Geographical range. Borneo.
Habitat preference. All material is from upper montane forest.
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