14 NEW YORK STATE MUSEUM 



about | inch in length, with a yellowish brown head and the 

 mouth parts and adjacent sutures dark brown or nearly black. 

 The body has a greater transverse diameter than the head, is 

 distinctly segmented and bears numerous irregular transverse 

 rows or- small setae, which are relatively much shorter than in 

 recently hatched individuals. The spiracles are well marked and 

 range in color from yellowish brown to light brown. The gen- 

 eral appearance of the grub is shown on plate 1, figure 4. Its 

 white color and curled form suggest the common white grub, in 

 spite of its much smaller size. 



The pupa ranges in length from about i to ^ inch and its 

 general features are represented on plate 1, figure 6. It may be 

 recognized by its white color with a pinkish tint about the head, 

 thorax and posterior extremity. The head is adorned with a semi- 

 circular row of four spines, the middle two being larger and 

 nearly erect, the others smaller and more divergent. There is 

 a similar row near the anterior margin of the thorax, though 

 the curve is not so pronounced as on the head. Just behind this 

 latter row there is a cluster of four smaller, nearly erect spines 

 placed in pairs, the posterior being more widely separated. The 

 anterior femora is armed at its tip with a stout hook, while above 

 and at one side is a single straight, hair-tipped spine with some- 

 times a second one below. The posterior femora is likewise 

 armed with a stout hook and with two hair-tipped spines. At 

 the posterior extremity, there are two flattened, stout spines pro- 

 t jecting dorsal ly. The penultimate seg- 

 ,,-4. ment is armed with a pair of small, 



^. <- 1 s | median spines with a smaller pair of 



~-~^Z > , closely placed ones on each side, and on 



v \ ' 1 * the antepenultimate there is a median 

 £ cluster of four closely placed, hair- 

 ^^. : tipped spines, the inner two being 



"& " - smaller. There is also a lateral spine 



on each side [fig. 1]. The other seg- 



Fig. 1 Posterior segments of 



pupa (original) ments are each provided with a single 



transverse row of minute, short bristles, and on the scutellum 

 there is a median pair of larger ones. 



This pupa may be known by its general form and coloration, 

 and by the peculiar arrangement of the spines at its posterior 

 extremity, as shown in the figure. 



