comb. & stat. n.
Nigramma quadratifera eusema Prout,
1926, Sarawak Mus. J. 3: 225.
Nigramma quadratifera eusema Prout;
Holloway, 1976: 20, fig. 125.
Diagnosis. The species is similar in facies to pseudoquadratifera but very
much larger and with a diffuse dark bar from the costa to the reniform. The main
distinguishing feature in the male genitalia is the very long and slender harpe.
Taxonomic note. This and the previous two species all resemble quadratifera but
none are clearly conspecific. Therefore eusema is here raised to specific
Geographical range. Borneo.
Habitat preference. The holotype is from G. Murud in Sarawak and a
further specimen was taken in upper montane forest on G. Mulu. Several were
taken at 1930m and 2110m on G. Kinabalu. The species thus appears restricted to
upper montane forest.
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