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Stictoptera
macromma Snellen
Stictoptera macromma Snellen,
1880, Tijdschr. Ent. 23: 87, three syntypes of which the 
‘Celebes,
Takalar’ is hereby designated LECTOTYPE.
Stictoptera striata Hampson,
1894, Fauna British India, Moths 2: 402, syn. n.
Stictoptera atrifera Hampson,
1912, Cat. Lepid. Phal. Br. Mus. 11: 167, syn. n.
Stictoptera ochrota Hampson,
1912, Cat. Lepid. Phal. Br. Mus. 11: 160, syn. n.
Stictoptera polysticta Prout,
1924, Bull. Hill Mus., Witley 1: 427, syn. n.
Stictoptera
macromma
(Sumatra) |
Stictoptera
macromma
(1) |
Stictoptera
macromma
(Assam) |
Stictoptera
macromma
(Thailand) |
Stictoptera
macromma(2) |
Stictoptera
macromma
(Peninsular
Malaysia) |
Diagnosis. This is a large species with generally dark brown forewings. It
resembles the previous four species in having an arcuate form, though this is
rare. It also has a series of forms with basal pale or dark brown zones that
extend to the medial or further distad akin to those seen in cucullioides and
signifera. Illustrated above is a (no. 2) plain brown form (no. 1) similar to the
lectotype and a form with longitudinally striate forewing patterning that is
reminiscent of forms of some Aegilia species. On above four other
forms are illustrated. The diagnostic feature is in the fine medial line which,
when not obscured by longitudinal markings, is strongly curved, meeting the
dorsum nearer to the thorax than it meets the costa. The male genitalia are much
as in the ferrifera group except the aedeagus vesica has no distal
cornuti, the terminal lobe of the saccus is less angularly isolated from the
lateral parts, and the uncus broadens out slightly at the base.
Geographical range. Throughout the Indo-Australian tropics east to New
Guinea; S. vitiensis Hampson from Fiji and Vanuatu is very similar
externally and may prove to be merely a race of macromma.
Habitat preference. The species has only been taken rarely in recent
surveys, from a range of habitats: lowland dipterocarp forest at Ulu Temburong,
Brunei, and coastal forest at Seria, upper montane forest at 1600m on Bukit
Retak, Brunei, and four specimens from 1200-1500m in upper montane forest on the
limestone G. Api, G. Mulu National Park.
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