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Eupterote naessigi sp. n.
 50-55mm,
 58mm.
The ground colour is yellow as in the previous species and fabia Cramer, the
type species. Most of the fasciation is much more broken into spots than in
these species, more irregular in emphasis. The postmedials are
relatively strong, entire, expanding on both wings into a diagnostic broad,
triangular dark brown zone anteriorly. The central portion of the hindwing
postmedial is straighter than in other species. The female is much more heavily
marked postmedially than the male. In the male genitalia the valve is much as in
the previous species and the aedeagus vesica is similarly strongly scobinate; in
fabia the scobination is very weak.
The male genitalia, particularly the aedeagus and the scobination of its vesica,
are somewhat more robust than in the taxa discussed in the taxonomic note; these
all lack the anterior broadening of the postmedials.
Holotype
BRUNEI:
0m, Sungei Kibi, 4460.1452, mangrove, 7-8.iii. 1984 (Maj. T.P.G. Helps) BM
eupterotid slide 82.
Paratypes:
2
as
holotype;
BRUNEI:
10.i.79. On Cassia sp. (Rahman); 3
BRUNEI: Ulu Temburong, various data; 1
Niah Caves Resthouse, SARAWAK, Borneo, 28.x.1978 (T. W. Harman), 1
SARAWAK:
Gunong Mulu National park, RGS Exped. 1977-8 (J.D. Holloway et al:), Site 16,
March, Long Pala (Base) 70m, 324450 [Alluvial forest] BM eupterotid slide 23.
Taxonomic notes. A species in Java (slide 83) and possibly Sumatra (slide 85) is
much more weakly marked, lacking the anterior triangles to the postmedials; the
situation on these islands is being studied by W.A. Nässig. A similarly weakly
marked form flies in Luzon (slide 86). In Sulawesi (slide 84) there is a species
with intermediate markings to which the name jaresia Swinhoe, based on small
specimens from Saleyer I., may be applicable.
Geographical range. Borneo, Sumatra, Peninsular Malaysia.
Habitat preference. Records have been mainly from lowland rainforest and
mangrove.
Biology.
The species has been reared from Cassia (Leguminosae) in Brunei. The larva of
the Javan taxon is similar to that of amaena but with the dorsolateral pale
stripe more distinctive (BMNH specimens); perhaps this was the taxon illustrated
by Horsfield & Moore (1858-9).
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