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Plusiodonta
calcaurea sp. n.
 ,  15-18mm. This is a slightly larger species than coelonota,
distinguished by the more extensive reflective golden areas on the forewing;
these do not show significant sexual dimorphism in their extent. Particular
features relative to coelonota are much broader blocks near the tornus and
subbasally on the costa. In the male genitalia, the distal process of the valves
appressed to the apex is singular, more digitate, straight, and the interior
saccular process is larger and more robust than in coelonota.
The aedeagus is very much larger and has a thorn-like spine at the apex. The
vesica is also larger with a longer distal diverticulum that is much more
coarsely spined over its apex. In the female, the eighth segment, ductus and
bursa are all more elongate, the ductus narrower and
the
bursa more pyriform and therefore distinctly broader.
Plusiodonta
calcaurea
(holotype) |
 |
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Holotype.
SARAWAK: Gunong Mulu Nat. Park, R.G.S. Exped. 1977-8 (J.D.Holloway
et al.),
Site 27, April, G. Api, 1500m. Pandanus Camp, 429541, scrub, Pandanus,
BM noctuid slide 18094.
Paratypes:
2
as
holotype; 1 as holotype but Site 26, April, G. Api Pinnacles, 1200m. 428545,
open scrub; 1 as holotype, but Site 25, April, G. Api, 900m. 427550, lower
montane forest; 1 as holotype but Site 18, March, W. Melinau Gorge, 100m. 128563,
alluvial forest & riverside veg.; 1 (slide
18096) SABAH: Mt Kinabalu, 5000ft., 4.5.1973 (K.M.
Guichard).
Taxonomic
note. The concept of coelonota here
is based on a study of type material two of its synonyms as listed by Poole
(1989) and Nielsen et al. (1996): chalsytoides Guenée
and conducens
Walker. However, coelonota
is
associated erroneously with Oraesia emarginata Fabricius (as a junior synonym) in the
BMNH collection and card index, and was not noted as a senior synonym of chalsytoides
by
Nye (1975).
Geographical
range. Borneo, Peninsular Malaysia.
Habitat
preference. Most material is from montane habitats and on or near
limestone.
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