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Risoba obstructa is a species of moth of the family Nolidae first described by Frederic Moore in 1881.

Risoba obstructa
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Lepidoptera
Superfamily:	Noctuoidea
Family:	Nolidae
Genus:	Risoba
Species:	R. obstructa
Binomial name
Risoba obstructa Moore, 1881
Synonyms
Risoba grisea Bethune-Baker, 1906 Crioa albifusa Turner, 1942

Distribution

Its distribution ranges from Sri Lanka and India to the Philippines, Solomon Islands and Australia.[1]

Description

Its wingspan is about 28–36 mm. Head and thorax brown. The tegulae are whitish. Forewings whitish sprinkled with brown. There is an oblique white basal band, and red-brown costal area just beyond it. Reniform round with a dark speck at center. A postmedial oblique double line slightly incurved below vein 4 and the area beyonf it red brown with traces of a sub-marginal waved line. Some apical dark specks and a series of marginal brown and white specks can be seen. Hindwings are semihyaline white with broad brown marginal band.[2]

Larva purplish brown with pale sides. Dorsal and lateral white speckled line and a sub-basal whitish streak series can be seen. A series of black dots found between lateral and sub-lateral lines. There is a conical prominence on anal somite.[3]

Ecology

The larva has been recorded on Quisqualis sp., Terminalia sp., Xylia sp., Lagerstroemia sp. and Sterculia sp.[4]

References

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