TRIBE NUDARIINI
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Adites bizonoides Walker comb. n.
   
Lyclene bizonoides Walker, 1862, J. Linn. Soc. (Zool.), 6:111.


Adites bizonoides
(x 1.38)





Diagnosis and taxonomic note.
This is the first of a sequence of externally very similar species with a rather elongate forewing discal spot and an antemedial that is more or less fused with, rather than divergent from, the subbasal over the costal half. These species also share characters of the male and female genitalia: a deep, almost semicircular uncus, an angled or spurred saccular margin and spined, reflexed saccular process to the valve, and a small aedeagus vesica with usually three strong cornuti; two opposed signa with large spines as discussed in the generic description. The females also have zones of sclerotisation and scobination in the neck of the bursa with the ductus and sterigma which may receive the aedeagus cornuti in copulation. No pattern to this has been detected that could be related satisfactorily to the distinct types of male genitalia, nor could the development of small (Figs 234, 238-240; including the type of bizonoides) to large (slides 5254, 5282; Fig 236) lateral pockets on the eighth segment be related with confidence to structures on the valves of males, though the two specimens with large pockets could relate to the species with the most robust spining on the saccular process of the valve, A. sandakan sp. n. Because of this, as indicated in the generic description, the name bizonoides is applied only tentatively to the species with two large, rather flattened cornuti and one small one in the aedeagus vesica, erect, rather triangular subbasal and subapical spines to the saccular margin and moderate, even spines to the rather small distal saccular process. One possibly aberrant specimen (slide 5280; Fig 217) has a third large spine in the aedeagus vesica.

Geographical range. Borneo.

Habitat preference. The species has been taken from a variety of lowland habitats in Sarawak (alluvial forest near G. Mulu) and Brunei (coastal forest at Seria, disturbed forest in the Labi area, heath forest at Telisai). The aberrant specimen was taken in swamp forest at Badas, Brunei.

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