Syntaracta ocellata Warren,
1894, Novit. zool., 1: 400.
Synegia ocellata Warren; Holloway, 1976: 83.
Diagnosis. This and the next species are externally very similar, including much
variability, sharing with S. dentifascia sp. n. the presence of ocellate
marks between M3 and CuA1 on both forewing and hindwing. The ground colour is a
slightly brighter yellow in ocellata compared with transgrisea, and
the ocellar marks tend to be stronger, particularly on the forewing and in the
form where they, and they alone, are picked out in black. The fasciae are also
marked by black dots on the veins: these tend to be stronger in transgrisea which
is altogether a pinker insect. The most reliable distinction is in the male
genitalia: the valve is relatively much longer and lacks a subbasal costal
process in ocellata; the cornutus in ocellata is longer, slender,
whereas it is robust, short in transgrisea. In the female, transgrisea
is distinguished by a strong, basal appendix bursae to the rather elongate
bursa. The appendix bursae is only moderate in ocellata from Borneo and
the bursa is more globular than elongate.
Taxonomic notes. The status of ocellata in Sundaland requires further
investigation. Unfortunately the only male of ocellata from the type
locality (G. Ijau in Peninsular Malaysia) lacks an abdomen. The genitalia of the
holotype do not have an appendix bursae, but the bursa is longer than in transgrisea
and narrow with the signum almost at the apex, but in facies is intermediate
between Bornean ocellata and transgrisea (See
Synegia transgrisea Holloway).
Sumatran material (female only) resembles that from Borneo. Bornean ocellata may
therefore represent a new species.
Geographical range. Peninsular Malaysia, Borneo, Sumatra.
Habitat preference. The species is frequent in upper montane forest,
known from G. Kinabalu, G. Mulu, Bukit Retak and Bukit Pagon.
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