TRIBE NYGMIINI n.
View Image Gallery of Tribe Nygmiini n.

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


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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