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Dysaethria scopocera Hampson comb. n. longiductus ssp. n.  
Epiplema scopocera Hampson, 1896, Fauna Br. India, Moths, 4: 549.
Dirades formosibia Strand, 1917, Arch. Naturgesch. 82A(1), syn. n.

Dysaethria scopocera

9mm. This is a variegated blackish species that sometimes is broadly dull red medially. The forewing has an irregular, angled, darker submarginal line, and the postmedial is strongly but somewhat irregularly arched, concave basad. The hindwing tails are rudimentary, but the typical angular pattern is present. The Bornean subspecies has a long, gently expanding and irregularly coiled ductus bursae about twice the length of the abdomen when extended rather than more or less equal in length as in the other subspecies. The ornamentation of the bursa is more as in ssp. formosibia Strand. The ostium is less heavily sclerotised, more rounded, slightly scrolled.

Holotype  SARAWAK: Santubong Mt., 300m, 9.ix. 1981 (Oxford Far East Exp.) BM 1981-493. BM genitalia slide 505.

Taxonomic notes. Placement of scopocera in Dysaethria is tentative: Chen (1997) considered its subspecies, formosibia Strand (Taiwan), generically distinct. However, the bifid uncus in the male is comparable to that of lilacina, and the valve structure is not incompatible with Dysaethria. Other features are unusual: the transtillar bridge has a complex row of two large spines amid finer setae on each side; the abdomen has coremata between segments 4, 5, and 6. The female has signa in the bursa somewhat Dysaethria-like: two adjacent longitudinal bands and two scobinate patches more or less opposite. The subspecies formosibia has the uncus processes closer together, less squarely set, with subbasal tufts of setae rather than accessary spurs adjacent at the base: the female has only the basal signa and these are fused together. The status of this complex needs further investigation. It is treated as one species here to draw attention to the relatedness of its component taxa.

Geographical range. Sri Lanka; Taiwan (ssp. formosibia); Peninsular Malaysia (FRIM Colln), Borneo (ssp. longiductus).

Habitat preference. The only Bornean specimen is from 300m on G. Santubong in Sarawak.

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