134 ^'E\V YORK STATE MUSEUM 



Synopsis of the larvae of Hemerocampa 



Head yellow, colors in general pale definita 



Head red 



A distinct yellow subdorsal band leucostigma 



Gray marks predominate, the yellow band not noticeable inornata 



Head black 



Warts crimson, brushlike tufts dark along the crest, the yellow lines 

 along the sides broken into spots 



One black tuft in young larva vetusta 



Two black tufts in young larva var. c a n a 



Description. The full grown caterpillar has a coral red head, a pair of 

 long black plumes just over it, a single one at the opposite extremity of the 

 body, four delicate yellowish or white brushlike tufts on its back and just 

 behind them, separated only by a segment, two small, retractile, red eleva- 

 tions. Along the back, except for the tubercles and tufts, there is a broad 

 black band bordered by yellowish subdorsal stripes. Each side is dark 

 gray, except the yellowish tubercles. A black line indicates the position of 

 the spiracles or breathing pores, and below this latter line it is yellow, the 

 legs usually being paler [pi. 7, fig. i]. This gives the general appearance 

 of the caterpillar after it has become half or two thirds grown, and at a 

 time when its depredations begin to be apparent. The recently hatched 

 larva is a pale yellowish or whitish creature with long, irregular hairs. As 

 it feeds, increases in size, and casts its skin [pi. 7, fig. 5] from time to time, 

 one after another of the characteristics of the full grown larva are assumed. 

 When maturity is reached, the larvae spin their thin cocoons in the 

 crevices of the bark [pi. 7, fig. 4], interweaving their long hairs, and within 

 this shelter transform to yellowish white pupae more or less shaded with 

 dark brown or black [pi. 7, fig. 7]. 



The difference between the sexes in the adult stage is strikingly shown 

 by comparing on plate 7, figure 2, an illustration of the male, with figure 3, 

 a representation of the female. The former is a beautiful moth with large, 

 feathery antennae, tufted legs, and the wings and body delicately marked 



