margaritacea Hering comb. & stat. n.
Hyphorma minax Walker, 1865, List Specimens lepid. Insects
Colln Br. Mus. 32: 493.
Hyphorma minax margaritacea Hering,
Hyphormides barisana West,
1937, Ann. Mag. Nat. Hist. (10) 20: 79, syn. n.
Diagnosis. The combination of long palps with the forewing facies described in the
generic description and the absence of a white spot on the dorsum distinguishes
this species. The aedeagus apex has distinctive lateral flanges.
Taxonomic notes. The typical race flies in China, and in S.E. Asia is found ssp. minor
de Joannis. These races differ little from the Bornean subspecies and ssp. capucina
Snellen stat. n. from Java, though the latter has the forewing fasciation
more obscure and lacks the distal flanges from the aedeagus. In Borneo there
have been taken two specimens with a paler ground and one more uniform red one,
both illustrated in the Plate. The status of these requires further
investigation. In Peninsular Malaysia there is a potentially new species (slide
830) with uniform dark red wings and forewing veins
R-3 -5 in a trifid branching arrangement rather than with R5
arising much more basally than R4 from the common stalk. The
genitalia of the Bornean variants and the Peninsular species are very similar to
those of minax, though in the Peninsular species both the valves and the
aedeagus are significantly more slender.
Geographical range. China, N.E. Himalaya; Thailand; Peninsular Malaysia,
Borneo, Sumatra; Java.
Habitat preference. The species was infrequent in Mulu samples, taken
singly in dipterocarp forest at 500m on G. Mulu and in lower montane forest at
900m on G. Api, twice in lowland limestone forest and thrice in kerangas heath
forest on a lowland river terrace. It has been recorded also from lowland forest
in Brunei, particularly at Labi. The specimens with pale ground colour are from
Tarat, Sarawak, and the more uniform red one is from lower montane forest at
1000m on G. Mulu.
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