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Nygmia
barbara Swinhoe
comb. n.
Euproctis barbara Swinhoe, 1903, Ann. Mag. nat. Hist. (7), 12:
197.
Nygmia barbara
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Nygmia barbara
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Diagnosis. This species is a member of the N. tamsi Collenette comb. n.
(Peninsular Malaysia, Sumatra) group, all having rather similar facies of darker
speckled fawn forewings with a strong discal spot and postmedial, the latter
broken by pale along the veins. The species are therefore best distinguished
from the male genitalia. Schintlmeister (1994) recognised that a complex was
involved: his fig 136-3 shows the genitalia of typical tamsi with rather
more elongate dorsal arms to the valves. In barbara, both arms of the
valves are shorter, the dorsal deep and rather rounded. The saccus is narrower,
and the aedeagus vesica has a continuous longitudinal band of small spines
rather than distinct basal and distal patches. The type material of barbara has
the ground of the forewings a slightly yellower tint, less heavily irrorated
with dark scales. Possible females (slides 2718, 2740) resemble those of exitela
in appearance, lacking the fasciation of the males, and in genitalic
structure, but the ductus does not broaden out to the ostium, is much less
fluted and has the double pocket sclerite narrower longitudinally and extending
more transversely. The bursa has a signum that is more typical of the genus, a
longitudinal flange.
Taxonomic note. The male genitalia indicate affinity with N. protea Collenette comb.
n. (Peninsular Malaysia) and N. zeboe Moore comb. n. (Java).
The genitalia in fig 136-2 of Schintlmeister (1994) are referable to one of
these species.
Geographical range. Borneo.
Habitat preference. The species is slightly more frequent in lowland
forest, but has been taken in lower montane forest on G. Api (900m) and G. Mulu
(1000m), and in upper montane forest on Bukit Retak (1618m).
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