The Eugoa Walker group of genera
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Eugoa holocraspedon sp. n.  

Eugoa holocraspedon (paratype)
(x 1.56)

9-10mm. The fawn colouring and dark brown speckling and fasciation is reminiscent of Holocraspedon bilineata Hampson, but the venation and male genitalia are typical of Eugoa as is the disposition of the forewing discal spots in specimens where both are expressed. The fasciae are fine lines, the antemedial angled as in tessellata, the postmedial straight, oblique. Two straight streaks extend from one-third and two-thirds on the submarginal to almost converge on the postmedial. The male antennae are serrate. The male genitalia have a transtilla with rugose lobes dorsally, and valves with a costa with angular processes, including at the ventrally lobed, setose apex. The aedeagus vesica is typical of the genus. The poor distributional correlation and rather different fasciation are counter to the possibility that the specimens are males of tessellata.

Holotype . SARAWAK: Gunong Mulu Nat. Park, R.G.S. Exped. 1977-8 (J.D. Holloway et al.), Site 8, February, Camp 1, Mulu, 150m, 385470, mixed dipt. for., BM arctiid slide 2758.

Paratypes: 5 BRUNEI: 15m, Telisai, sandy heath forest and Gymnostoma, 3.2.1979 (Lt. Col. M.G. Allen); l Telisai, 10 metres, BRUNEI, 13.ii.1982 (T.W.Harman); 2 BRUNEI: 15m, Daerah Belait, Badas, swamp forest, 25 Feb 82 (Lt. Col. M.G. Allen); 2 BRUNEI: 3m, Seria, secondary and coastal veg., 30.12.1978 and 3.6.1979 (Lt. Col. M.G. Allen).

Geographical range. Borneo.

Habitat preference. The species is uncommon, perhaps more associated with heath, swamp, and coastal forest on acid soils, though the holotype was taken in hill dipterocarp forest, and single unlisted specimens were taken in alluvial forest during the Mulu survey and in the dipterocarp forest in the Ulu Temburong of Brunei.

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