19 December 2015

Life History of the Spotted Judy

Life History of the Spotted Judy (Abisara geza niya)

Butterfly Biodata:
Genus: Abisara C. & R. Felder, 1860
Species: geza Fruhstorfer, 1904
Subspecies: niya Fruhstorfer, 1914
Wingspan of Adult Butterfly: 36-46mm
Caterpillar Local Host Plants: Embelia ribes (Myrsinaceae), Embelia canescens (Myrsinaceae).

Physical Description of Adult Butterfly:
Both sexes have their hindwings prominently angled at vein 4. On the upperside, the male is deep crimson brown with a pale, whitish and diffuse subapical band on the forewing and black submarginal spots in spaces 4, 5, and 1b on the hindwing. The female is paler and marked similarly but with its forewing subapical band much broader, and there are two diffuse whitish postdical bands on each wing. On the underside, both sexes are paler and each wing has a pair of diffuse, pale-purplish, postdiscal bands. The outer band on the hindwing has a series of black, white-edged, submarginal spots in spaces 1b, 4, 5 and 6. The female has broader and paler transverse bands. The hindwing discal band is dislocated at vein 4.

Field Observations of Butterfly Behaviour:
The adults are moderately rare and are typically sighted in the forest understorey within nature reserves and in a hill park. The timid and skittish adults are often seen perching on leaves with half open wings, turning and hopping from one perch to the next.