TRIBE NUDARIINI
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Lyclene biseriata Hampson comb. n.
   
Asura biseriata Hampson, 1900, Cat. Lepid. Phalaenae Br. Mus., 2:458.


Lyclene biseriata
(x 1.67)


Diagnosis and taxonomic note. This is the first of a sequence of eleven species with very similar forewing facies: a central fascia dividing basal and distal arrays of longitudinal streaks. There is a discal mark, and the margins are punctate on the veins. The sequence can be divided into two groups on genitalic characters: the biseriata group with both costal and saccular valve processes separated by a more membranous valve apex; the circumdata Walker group with a saccular process only, the rest of the valve apex being robust, broad, with a field of setae. The biseriata group has lateral pockets on the seventh segment of the female, and the ductus bursae is generally larger. Also, the biseriata group tends to have more clear ground colour basal to the central fascia of the forewing before the striae commence, rather than distal to it, and any markings at the margin of the hindwing on the underside tend to be narrower and more clearly defined. Both groups share an unusual feature in that the aedeagus expands to a rather triangular base that is produced ventrally; the vesica usually has two cornuti. Females in both groups have a well developed corethrogyne, unusual in the genus. The species identified by Holloway (1976) and Barlow (1982) as biseriata are not that species, the former being a member of the circumdata group, and the latter possibly L. quadrata sp. n. or an undescribed taxon. True biseriata and close relatives described next are distinguished by bilateral asymmetry in the saccular processes of the valve, the right process being shorter than the left and sharply narrowed subapically rather than evenly tapering and curved; the valve apex is subtended from the costal process and narrow. The central fascia of the forewing is missing in biseriata (see next two species), seen also in a female (slide 5371) tentatively associated.

Geographical range. Borneo.

Habitat preference. All material is from lowland areas, some forested, some in areas of habitation or disturbance, e.g. Sandakan and Ulu Dusun in Sabah, Semongok in Sarawak, and Telisai, an area of heath forest in Brunei. The possible female is from 600m at Poring in Sabah.

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