176 



Forty-second Report on the State Museum. 



[34] 



•^^. 



'//'///. 



spiracles and connect above with a white stripe which borders a 

 dark green subdorsal line extending from the lateral stripes of 



the head nearly horizon- 

 tally to the tenth segment 

 where it curves ujjward 

 to the caudal horn; on 

 the three anterior seg- 

 ments the subdorsal line 

 is bordered beneath with 

 yellow. Usually on the 

 back are five or six pale 

 green or yellow spots of 

 which the base of each 

 rests on the anterior por- 

 tion of the segment, and 



the apex on the posterior, 

 Fig. 5.— The grapevine hog-caterpillar, Daeapsa ■, . -.i . ,^ 



Mteon, having withm them a 



lozenge-shaped dull rose-red spot resting on the anterior margin. 

 The spiracles are orange colored, with a white spot at each end. The 

 caudal horn is curved, one-fourth of an inch long, bluish-green, granu- 

 lated in black in front and in yellow behind, and with a yellow tip. 

 Length of caterpillar, two inches. 



A short time before its pupation, the color changes to a dull rose 

 throughout, with the white lateral and the subdorsal bordering bands 

 of a clearer rose. Previous to this change of color, I have observed 

 the caterpillar to pass with its mouth over the entire surface of its 

 body and of its horn even to the tip, applying to it a coating of what 

 seemed a glutinous matter — the operation consuming about two 

 hours. * 



Its Injuries. 



Although often a serious annoyance in vineyards, it does not in its 

 general behavior merit the bad reputation given to it by Dr. Harris. 

 He says of it: "Not content with eating the leaves only, it stops at 

 every cluster of fruit and, either from stupidity or disappointment, 

 nips off the stalks of the half-grown grapes and allows them to fall 

 to the ground untasted. I have gathered under a single vine above 

 a quart of unripe grapes thus detached during one night by these 

 caterpillars." 



* Proceedings of the Entomological Society of Philadelphia, iii, 1864, p. 663. 



