Sylhet Three-spot GrassYellow

Eurema (Terias) blanda silhetana (Wallace, 1867) — തകര പാപ്പാത്തി

Photographer: Pradeep Krishnan

Malayalam Name: മുപ്പൊട്ടൻ മഞ്ഞപ്പാപ്പാത്തി/തകര പാപ്പാത്തി
Family:Pieridae
Sub Family:Coliadinae
Order: Lepidoptera (Butterflies and Moth)

DISTRIBUTION: South East Asia, India 
STATUS: Common
HABITAT :S
HABIT: Exhibits seasonal polyphenism. It has a darker summer morph, triggered by a long day exceeding 13 hours in duration, while the shorter diurnal period of 12 hours or less induces a fairer morph in the post-monsoon period. 


IDENTIFICATION FEATURES:

Wet form: Male. Upper-side lemon-yellow. Fore-wing with the outer marginal black band anteriorly broader than in Sri Lankan specimens of Eurema hecabe, the posterior end shorter and its inner edge outwardly oblique. Hind-wing with a moderately broad black outer band. Underside. Both wings with more or less defined ordinary markings of wet form. Fore-wing with three marks in the cell, in addition to the discocellular. No sub-apical patch. Female. Not seen.

Intermediate form: Male. Not seen. Female. Upper-side. Fore-wing with similar outer band to the wet form. Hind-wing with a broad black outer marginal band. Underside with slightly-defined ordinary brown markings as in wet form. Fore-wing with a brown sub-apical patch.

Dry form: Smaller than in wet form. Male. Upper-side. Fore-wing with narrower outer marginal band, its posterior end much smaller. Hind-wing with a slender outer band. Underside. Both wings with similar ordinary markings to the wet form. Fore-wing with a more or less defined sub-apical patch. Female. Upper-side. Fore-wing with a broader black outer band than in male. Hind-wing with a much broader outer band than in male. Underside. Both wings similar to male.

Extreme Dry form: Male not seen. Female. Upper-side. Fore-wing with a broad black outer band, its posterior portion angled obliquely outward from the lower median veinlet. Hind-wing with a moderately broad outer band. Underside. Both wings with ordinary markings as in dry form. Fore-wing with a prominent almost complete quadrate apical brown patch. 
LARVAL HOST PLANT: 
Acrocarpus fraxinifolius, Albizia spp., Albizia lebbeck, Bauhinia purpurea, Caesalpinia mimosoides, C. regia, C. sappan, Calliandra calothyrsus, Cassia spp., C. fistula, C. javanica subsp. nodosa, Delonix regia, Falcataria moluccana, Gliricidia sepium, Moullava spicata, Pithecellobium dulce, Sesbania spp., S. bispinosa, S. grandiflora, Xylia xylocarpa (Fabaceae). Camellia sinensis (Theaceae). 
MORE IMAGES    

Dry Season Form

Wet Season Form
Three Spot Grass Yellow
Three-spot GrassYellow - Just emerged - side view - Photographer: Pradeep Krishnan

Three-Spot Grass Yellow
Three-spot GrassYellow - Caterpillar - Feeding on host plant - Photographer: Anila Manalil

Three Spot Grass Yellow

Three Spot Grass Yellow

Three-spot GrassYellow
Three Spot Grass Yellow

കേരള വനം വന്യജീവി വകുപ്പ്  
മാങ്കുളം ഡിവിഷൻ

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