P TEROPHORIDJE—LEIOP TIL US. 389 



raised dots white, each bearing a little fascicle of about four 

 silky white hairs, curved and finely pointed ; ventral surface 

 and legs a little paler than the rest of the ground colour. 

 (W. Buckler.) 



October till May or June; on Artemisia vulgaris {rawg- 

 wort), eating only the parenchyma of the leaves. When 

 young it gnaws oblong blotches near the tips of the upper 

 leaves, leaving the cuticle of the upper side entire and care- 

 fully rolling back the downy skin of the underside to the 

 edge of the blotch. When about one-fourth grown it moves 

 to a lower leaf which it draws together, uniting the tips 

 underneath and carefully sewing together the edges of the 

 segments so as to make a secure little tent, inside which it 

 feeds as before, only makiug larger blotches side by side 

 between the ribs of the leaf, until the greater portion of the 

 substance is devoured, when it deserts this habitation and 

 makes another lower down ; and so on, constructing four or 

 five tents before becoming full grown. When several larvte 

 feed upon an isolated plant its growth is checked, and every 

 leaf takes something the appearance of a bladder, giving it a 

 very singular aspect. 



Pupa exceedingly bristly, all the tufts of hairs of the larva 

 fully reproduced, colour pale green, with a faint yellow 

 dorsal line, and some oblique brownish shading on the back ; 

 wing covers green ; antennje and leg covers tinged with 

 brown ; spiracles black. Attached by the anal hooks to a 

 silken pad or carpet on a stem, dead leaf, or other object, 

 but not hanging — rather in the position of a living larva — 

 level upon the surface. Most curiously active, having 

 strongly developed the power possessed by many pupae in 

 this group of violently throwing back the thorax if disturbed. 

 In the case of this species, a touch upon the back of the 

 abdomen of the pupa is instantly responded to by a blow 

 delivered backwards by the thoracic portion. So bristly is 

 this pupa that it cannot well be distinguished by the naked 

 eye from a larva. 



