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Calliteara horsfieldii Saunders  
Arctia horsfieldii Saunders, 1851, Trans. ent. Soc. London, 1851: 162.
Dasychira arga Moore, [1860] 1858-9, Cat. Lepid. Insects Mus. E. Ind.  Co., 2: 339.
Dasychira longipennis Walker, 1862, J. Linn. Soc. (Zool.), 6:131.
Lymantria inhonorata Hopffer, 1874, Stettin. ent. Ztg, 35: 44.
Dasychira horsfieldi queenslandica Strand, 1915, Gross-Schmett. Erde, 10: 293.
Dasychira horsfieldii Saunders; Holloway, 1976: 50

Calliteara horsfieldii

Calliteara horsfieldii

Calliteara horsfieldii

Males occur in two forms: with uniform grey forewings or with forewings darker grey distal to the antemedial. The antemedial is strongly curved with the concavity basad, whereas in the next species, cerigoides Walker, which also has a yellow hindwing, it is angled distad, and has a bluish grey band associated with it. The female of horsfleldii is mainly white, with only faint markings on the forewing, whereas cerigoides has the forewing heavily irrorated and fasciated with brown, and there is a yellowish tinge to the hindwing.

Geographical range. Thailand, Sundaland, Sulawesi, S. Moluccas, Dammer, Tenimber, New Guinea.

Habitat preference. The species has been recorded from the lowlands to as high as 2600m on G. Kinabalu, with the variant with the uniform forewing pattern tending to predominate at higher altitudes.

Biology. The larva is a striking pale yellow with the usual row of brushes dorsally. The intersegmental membrane in this region is black. The secondary setae are conspicuous and very much longer than the dorsal brushes. The larva is illustrated by Barlow (1982) and Chey (1996).

Host-plant records include (Pholboon, 1965; Browne, 1968; Barlow, 1982; Kuroko & Lewvanich, 1993; Hutacherern & Tubtim, 1995; Chey, 1996; unpublished IIE and FRIM records): Anacardium, Mangifera (Anacardiaceae); Casuarina (Casuarinaceae); Brassica (Cruciferae); Dipterocarpus, Hopea, Shorea (Dipterocarpaceae); Acacia, Cassia, Erythrina, Pterocarpus, Tamarindus (Leguminosae); Lagerstroemia (Lythraceae); Ficus (Moraceae); Eucalyptus, Eugenia, Psidium, Syzygium (Myrtaceae); Pinus (Pinaceae); Rosa (Rosaceae)

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