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SUBFAMILY
PANTHEINAE |
Ortopla WalkerType species: iarbasalis Walker, Borneo. Synonyms: Koptoplax Hampson (type species lindsayi Hampson, S. India); Oromena Moore (type species relinquenda Walker [as reliquenda], India, though the material Moore studied is of commutanda Warren, another Indian species (Nye, 1975; Poole, 1989)). The genus is sexually dimorphic, females tending to have more strongly marked, variegated forewings, and lacking any modification to their shape; males of iarbasalis and lindsayi have a strong angle to the costa near the position of the postmedial, leading to the distal third of the costal margin being concave. The labial palps are strongly upcurved and are more thickly scaled in the male. The male antennae are fasciculate, and the foretibia may be strongly tufted. The facies of all species is much as in those from Borneo. In the male abdomen, the eighth sternite has lateral rods but no evident coremata, though the anterior margin appears to form a shallow, bilobed pouch. The genitalia have a massive scaphium that terminates in a semicircular excavation opposite a subscaphial area of sclerotisation. There is some indication of a paratergal sclerite, but this is not clear in some of the preparations examined. The tegumen is much longer than the vinculum. The valves are rather strap‑like and lack processes. The aedeagus vesica is tubular, tapering, finely scobinate to spined in places. In the female genitalia, the ovipositor lobes have their distal margins forming an incomplete ring, rendering them together somewhat cylindrical. The ostium is between the seventh and eighth sternites and narrows into a short ductus. The corpus bursae is an elongate pyriform, corrugated and finely rugose or scobinate in places. The ductus seminalis arises from a slight appendix, posteriorly directed from subbasally on the bursa. The genus has several species in India, China and the south‑east Asian peninsula. There are two species in Borneo. |
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