364 LÉPIDOPTÉROLOGIE COMPARÉE 



The collar, formed by a séries of y3llow dots, is much better 

 developed tlian in zonaria and just behind it can be seen the 

 indistinct pale but black-dotted prothoracic plates. 



As in hirtaria, the anal plate is well marked although plainly 

 broader and more rounded. It is a grey, tending to yellow, in 

 colour and terminâtes with a paler area on which are the four 

 tubercles mentioned in other instars. Just before it, are two oval 

 yellow spots replacing the two rounded ones of hirtaria. 



The fairly large, black, somewhat rounded spiracles are situated 

 in a black suffusion which may or may not be independent of the 

 supraspiracular suffusion inherited from zonaria. 



The spiracular stripe, as before, is of the zonaria type although 

 narrower, and clearly marked in it, is the bright-yellow spot of 

 hirtaria bearing one of the weak primary tubercles. In colour, it 

 is pale primrose and whilst reasonably regular on the first five 

 abdominal segments, it becomes irregular and waved on the last 

 ones. 



On the thorax it is broken and, although never so clear and 

 yellow as on the abdominal segments, in many individuals it 

 is orange yellow. Beneath, the larva is smoky in colour and as 

 one proceeds outward, this smokiness increases until just beneath 

 the spiracular line it is dead black. 



The double medio-ventral stripe now, for the first time, shows 

 some trace of the influence of hirtaria for it becomes slightly more 

 like a chain of hoops than a séries of barrels in shape. Still, the 

 filling in is yellow as in zonaria. 



The legs are black, bi:t may be obscurely pale ringed. The space 

 between them now, is more distinctly yellow as in hirtaria and the 

 yellow freckles, suggesting the ventral stripe, which may appear 

 in this area in hirtaria, are présent. Between the legs and the 

 spiracular line is a small pale yellow bar. The anal prolegs are 

 practically midway in build between those of the two parents and, 

 consequently, a larva is unable to stick to a twig as hirtaria does. 

 In colour, the prolegs are smoky black with darker freckles which 

 become heavier on the posterior plate. Between the prolegs the 



