transitiva Walker comb. n.
Syntomis transitiva Walker,
1862, J. Linn. Soc. Lond. (Zool.), 6: 89.
Syntomis intermissa Walker,
1862, Ibid. 6: 90.
Ceryx transitiva Walker; Seitz, 1912-1913: 66.
Diagnosis. This species is distinguished from species with similar facies in
Sumatra, Peninsular Malaysia and Thailand by its male genitalia as discussed
above. These are similar to those of the next species, with the base of the
uncus broadened into a semicircle on each side. The markings of abdomen and
thorax are white in this species but yellow in the next, the basal abdominal
ring being broader in the next and usually unbroken dorsally. The transparent
spot in the forewing cell is usually more elongate in transitiva, usually
separated by a much narrower zone of black. In the male genitalia the basal
flanged zone is broader in the next species, extends relatively further towards
the apex of the uncus, which is deeper.
Geographical range. Borneo.
Habitat preference. Specimens seen have been from Bidi and Kuching in the
lowlands of Sarawak. The species appears to be much rarer than the next.
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