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Speiredonia
ibanorum Zilli & Holloway
Speiredonia
ibanorum Zilli & Holloway, in Zilli et al. (2005).
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Speiredonia
ibanorum
(paratype)
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Diagnosis.
The holotype male is worn but similar to alix in facies as far as can be determined,
except the third segment of the labial palps is longer and more slender as in
females of alix rather than shorter as in males of that species. The forewing
medial fascia over its posterior-half appears straight and somewhat oblique to
the dorsum, forming with it an acute angle distad. The pale submarginal dash on
the forewing equivalent to the subtornal white spot on the hindwing is more
obscure than in alix, and the hindwing spot is more lunulate than punctate. The male
genitalia have the apical part of the valve tongue-like, extending well beyond
the more central saccular process and the produced distal part of the sacculus;
these processes form a bifid structure. The genitalia of the female have a
narrow but apically bilobed antevaginal plate, a moderate ductus, sclerotised
and of even width (shorter and less sclerotised in alix),
and a more strongly ornamented bursa as illustrated.
Taxonomic
note. A related species, described by Zilli et
al.
(2005), occurs in Sulawesi and Bacan.
Geographical
range. Borneo.
Habitat
preference. Only two specimens are known, a male from 150m in lowland
forest near the Danum Valley Field Centre and a female from a similar habitat
near Labi in Brunei.
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