N. H. AGRI. EXPERIMENT STATION [Bulletin 247 

 DESCRIPTIONS 



Egg 



The egg (Fig. 1) is pearly white, slightly oblong, and equalh' rounded 

 at both ends. It varies in length from 0.735 mm. to 0.825 mm., the av- 

 erage being 0.782 mm. The width varies from 0.405 mm., to 0.480 mm., 

 the average being 0.452 mm. 



Larva 



The larva (Fig. 2) is a yellowish-white to white cylindrical footless 

 grub. The body is divided by transverse constrictions into three tho- 

 racic and nine distinct abdominal segments, tlie anal lobes forming the 

 tenth. The thoracic segments are not larger than the first abdominal 

 se*gment. The width of the head is about one-half that of the body 

 and is of a light brown to deep yellow color, the anterior margin and the 

 mandibles being much darker. A shining dorsal plate and a dis- 

 tinct sternal plate are found on the first thoracic segment. There is 

 a distinct spiracle on the first thoracic segment ; none on the second 

 and third thoracic segments; and again distinct spiracles on the first 

 to eighth abdominal segments. The spiracles are round. The length 

 of the full grown lar^•a varies from 6.25 mm. to 9.5 mm., the average 



Pupa 



The pupa (Fig. 3) is exarate or free and is of a creamy white color. 

 The eyes at the base of the snout are light brown. As the pupa matures 

 the snout, head, and legs become brown, this shade gradually extending 

 as the pupa approaches the adult form and color. The abdomen is 

 square at the tip and has a sharp, slightly curved spine on either side. 

 The length of the pupa varies from 5.50 mm. to 6.75 mm., the average 

 being 5.93 mm. 



Adult 



The adult (Fig. 4) is an oblong-oval weevil. Its color varies from 

 dark brown to light brown but usually is dark reddish brown. Both 

 sexes are marked with irregular small patches of grayish-white and yel- 

 low scales. The grayish-white hind-spots form an almost continuous 

 band across the posterior third of the elytra. The thorax is definitely 

 marked with several small round spots of light-colored scales. Small 

 patches and scattered white scales are found on the sides of the thorax 

 and femora, and the ventral aspect of both thorax and abdomen. The 

 beak is shorter than the thorax in the male while it is equal to it in the 

 female. The geniculate antennae are inserted on the sides of the beak 

 near the middle. The thorax is as broad at the base as it is long, the 

 sides parallel along the basal half, beginning to narrow toward the front. 

 The disc is densely and finely rugose-punctate. The elytra are slightly 

 wider than the thorax, the sides parallel to a point beyond the hind-spot 

 where they start to converge and are compressed to an apex. The stria- 



