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Dyrzela plagiata Walker  
Dyrzela plagiata
Walker, 1858, List Specimens lepid. Insects Colln. Br. Mus., 15: 1758.
Oglasa costipannosa
Swinhoe, 1890, Trans. ent. Soc. Lond., 1890: 266.
Oglasa costiplaga
Swinhoe, 1891, Ibid., 1891: 153.
Dyrzela plagiata perampla
Warren, 1913, Gross-Schmett. Erde, 11: 177.
Dyrzela plagiata
Walker; Holloway, 1976: 14.

Dyrzela plagiata

The forewings are leaden grey, the subapical costal brown patch larger than in any other species, longer over the costa except in the next species. In D. tumidimacula Warren the patch is also large but more square than triangular, with the forewing ground colour brownish.

Geographical range.
India to Sundaland, Sulawesi, Seram, New Guinea.

Habitat preference.
The species ranges from the lowlands to the upper montane zone (just under 2000m) and is more frequent at the higher altitudes.

The semi-looper larva (see generic description) is thin, yellowish green with broad dorsolateral white lines, a dorsal, yellow pulsating line, and two yellow ones laterally (Bell MS). There are primary setae only.

The young larvae live on the underside of leaves, moving like leeches. Mature larvae are found in a similar position, eating young foliage. On alarm they drop and wriggle on silken threads. They pupate near the surface of the soil in a soft, loose, silken cell incorporating earth particles.

The host-plant is Grewia (Tiliaceae).

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