Diarsia
borneochracea sp.n.
Diarsia
ochracea Walker
sensu Holloway, 1976: 7.
Diarsia
borneochracea (paratype)
15-16mm. The species is the smallest in Borneo; the forewings are an ochreous
fawn with darker brown markings. The posterior half of the reniform stigma is
usually darkened. In facies the species resembles ochracea Walker from
Sri Lanka and gaudens Hampson from Java but is distinguished by reduction
of the spined band of the aedeagus to two or three unequal spines downturned at
the apex of the aedeagus. The dorsally directed process of the harpe is much
more strongly sinuous than in either of these species.
Holotype
SARAWAK:
Gunong Mulu Nat Park, RGS Exped. 1977-B (J.D. Holloway et al.) BM
1978-206. Site 6, January, Gunong Mulu, 2360m, low summit scrub. BM noctuid
slide 12966.
Paratypes:
2as holotype; 20
examples SABAH: Mt Kinabalu, various localities,
Cambridge Expedition to Mt Kinabalu, 1965 (H.J. Banks, H. S. Barlow & J.D.
Holloway) Brit. Mus. 1968-86, BM noctuid slides 12924,12929.
Geographical
range. Borneo.
Habitat
preference. The
species is common from 1600m to 2600m on G. Kinabalu and is also known from the
dwarf forest zone at the summit of G. Mulu (2360m).
15-16mm. The species is the smallest in Borneo; the forewings are an ochreous
fawn with darker brown markings. The posterior half of the reniform stigma is
usually darkened. In facies the species resembles ochracea Walker from
Sri Lanka and gaudens Hampson from Java but is distinguished by reduction
of the spined band of the aedeagus to two or three unequal spines downturned at
the apex of the aedeagus. The dorsally directed process of the harpe is much
more strongly sinuous than in either of these species.