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Nygmia guttistriga Walker
stat. rev. & comb. n.
Euproctis
guttistriga Walker,
1862, J. Linn. Soc. (Zool.), 6:129. Male syntype (UM, Oxford)
hereby
designated LECTOTYPE.
Euproctis
postnigra Swinhoe,
1903, Trans. ent. Soc. London, 1903: 421, syn. n.
Euproctis
coelebs Collenette,
1932, Novit. zool., 38: 74, syn. n.
Nygmia guttistriga 
Nygmia guttistriga 
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Diagnosis. The orange and black irroration of the forewings, with faint whitish
fasciae and a white streak wing distad from the discal dot are distinctive.
Black lunules in the spaces basal to the antemedial and distal to the postmedial
are variable in development.
Taxonomic notes. The syntype female of guttistriga is that of a Rhypotoses species
(See Rhypotoses Collenette). The taxon innupta Collenette from Peninsular Malaysia,
placed as synonym of coelebs by Collenette (1953), is also a Rhypotoses
female, possibly of R. phloeochroa Collenette. The holotype of coelebs
is male and matches the lectotype of guttistriga. The forewing is
less orange and the pale streak from the discal spotless marked in the forewing
of coelebs. The structure of the genital capsule is unusual, with the
tegumen expanded, the digitate uncus weak, and the valves entire, triangular,
with a circle of irregular spines interiorly. The uncus has an apical spur but
no scobination in the vesica. The signum flange in the female is transverse
rather than longitudinal in the bursa. Assignment to Nygmia therefore
needs further assessment.
Geographical range. Borneo, Natuna Is.; Sumatra, Peninsular Malaysia (ssp.
coelebs).
Habitat preference. The species has been recorded infrequently from a
wide range of lowland forest types, including heath, swamp and coastal forests.
The highest record is a female from 1000m on G. Mulu.
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