THE GRAPE INSECTS. 



365 



portion being larger in proportion to the rest of the body than 

 in the adult beetle. It is a quarter of an inch in length. Tlie 

 beetle is characterized by four raised lines on each wing-cover, 

 with five or six black dots on each line or rib. An oblique 

 black line diverges from each side of the scutellum. Just in 

 front of the middle is a tviangular, pale space, bounded behind 

 by an oblique, dark line. In color it resembles the bark of the 

 ash ; it is a quarter of an inch in length. 



INSECTS INJURIOUS TO THE GRAPE. 



The Grape Callidium. -^(Flsite 1, Fig. 3.) Several years ago 

 I received from Dr. Shimer of Illinois, specimens of the larva, 

 pupa and adult of this pretty insect ( CaUidium amamum of 

 Say), which is not uncommon in our own State. So much 

 alike are all the borers of this family of long-horned beetles, 

 that long and prolix descriptions and carefully drawn figures 

 of the mouth parts (wherein most of the differences lie) are 

 absolutely necessary for their identification. 



The larva (Fig. 8, b, head seen from above ; c, seen from 

 beneath) has a small head, 

 which is a little more than 

 half as wide as the prothorac- 

 ic segment. This latter, be- 

 ing the segment immediately 

 succeeding the head, is half as 

 long as broad, with a distinct 

 median suture and four chiti- 

 nous patches, the two middle 

 ones transverse and irregu- fiq. 8. 



larly oblong, being about twice as broad as long, the outer spots 

 being longitudinal to the segment, and oblong in form, or about 

 twice as long as broad. The three segments succeeding are of 

 nearly equal length and width, being about half as long as the 

 prothoracic segment, and not much narrower. The body 

 decreases in width towards the posterior half, which is of equal 

 width throughout, the end suddenly rounding off; the terminal 

 three segments are indicated by very slightly marked sutures, 

 and together form a straight cylindrical portion nearly as long 

 as the three segments in advance of it taken collectively. The 



