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Zamarada ucatoides sp. n.  
    Zamarada ucata
Fletcher, 1974: 73, partim.

Zamarada ucatoides

, 13mm. This species resembles eogenaria in general appearance, but is larger with stronger indentations to the interior margins of the borders on both wings. The male genitalia differ from those of the rest of the group in lacking any process from the interior face of the ventral portion of the valve, and the apical zone of the dorsal arm is diagnostically very long, and the stalk of the arm above it is slender and straight rather than slightly sinuous. The female genitalia have a broad, ring-like sterigma structure with an irregular, serrate anterior margin.

Holotype . BRUNEI: 30-60m, Labi, lowland forest, 28.8.1979 (Lt. Col. M.G. Allen) BM geometrid slide 15655.

Paratypes: 1 BRUNEI: 300m, Ulu Temburong, rainforest, 9.2.1980 (Lt. Col. M.G. Allen) slide 15656; 1 BRIT. N. BORNEO [Sabah]: probably fr. East Coast Residency Coll. 1878-1898 by W.B. Pryer, pres. 1900 by Mrs W.B. Pryer, slide 15813 [paratype of Z. ucata].

Taxonomic note. Dissection of Bornean paratypes of Z. ucata Fletcher showed them to be mainly nesiotica. No true ucata have been located, so this species is probably absent from Borneo.

Geographical range. Borneo.

Habitat preference. All specimens have been taken in the lowlands from forested localities.

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