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Hydrillodes plicaloides sp. n.


Hydrillodes plicaloides

Hydrillodes plicaloides
Figure 176
Figure 197

12-14mm, 12-13mm. This species resembles plicalis Moore (Indian Subregion) externally and differs from toresalis as indicated above. However, the male genitalia have the obtuse angle to the margin of the tegumen slightly more developed and more ventral. The valve processes are more equal in length, the dorsal one perhaps slightly shorter, whereas in plicalis (slide 19750) the dorsal one is about twice as long as the ventral one. The aedeagus is much more strongly expanded apically than in plicalis and more massively spined, and there are transverse robust cornuti in the basal zone of the vesica rather than two smallish ones. There is extensive fine scobination in the more distal part of the vesica; plicalis has much less in that area, but there is a field of coarse scobination just distal to the cornuti. In the female genitalia there is a pair of short processes laterally to the ostium, angled in towards each other in plicaloides; in plicalis (slide 14481; holotype of the synonym tennenti Felder & Rogenhofer), these are not convergent and rather more foliate with an irregularly serrate margin.

Holotype . SARAWAK: Gunong Mulu Nat. Park, R.G.S. Exped. 1977-8 (J.D. Holloway et al.), Site 14, February, Camp 2.5, Mulu, 1000m. 413461, lower montane forest, BM noctuid slide 10812.

Paratypes: 2, 1 as holotype; 1 as holotype but Site 15, February, Camp 2.5, Mulu, 1000m. 413461, lower montane for.; 8 (slide 10811), 2 (slide 10815) general data as holotype but Site 25, April, G. Api, 900m. 427550, lower montane forest; 2 BORNEO: Sabah, Bukit Monkobo, 5° (176) 48' N, 116° (176) 58' E, 9.viii.1987, (A.H. Kirk-Spriggs), base camp, stunted hill forest; 1 Bukit Monkobo as above but 24.viii.1987, 1775m, upper montane forest, summit.

Geographical range. Borneo.

Habitat preference. The altitude range is similar to that of toresalis, but the species is much less frequent in the lowlands and commonest in lower montane forest.

Biology. The related H. plicalis was reared from fallen Bombax (Bombacaceae) flowers in India (Robinson et al., 2001).

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