LONG HORNED BEETLES. 



Ill 



Pig. 117. — Prionus iwbri^ornis, Linn, 

 Male.— After Riley. 



Fifi. 117^^.— Phvmatodus amoenus. 

 Say .-After Division i)f Entomology, 

 U. S. Department of Agriculture. 



rather remarkable difference in these two species, viz. : laticollis 

 has in both sexes twelve-jointed antennas, while in imhricornis 

 the feeler of the male is composed of nineteen, that of the female 

 of about sixteen joints. Fig. 117 shows the male of iinhricornis. 

 The Typical Cerambycids, (Cerainbycinae), contain about 

 four hundred North American species, divided into more that one 

 hundred genera. 



THE GRAPE-VINE PHYMATODES. 



(Phymatodes amoenus Say). 



This beautiful beetle is frequently sent to the entomologist 

 as being destructive to the grape-vine. But this is not exactly 

 the case, although there is no doubt that it is frequently fomid 

 about such plants. But it only feeds in its larval stage in dead 

 or dying wood, hence all vines properly 'trimmed will not harbor 

 it. The dead vines of the wild grape, however, offer an excellent 

 abode for it. The beetles are bright blue, with a yellowish-red 

 thorax. They appear in spring, and deposit their eggs in dearl ^r 

 dying canes. The beetle is shown in Fig. 11 7/^. 



Closely allied species of Phymatodes are frequently very nu- 

 merous about cordwood ; here they breed in such numbers that 

 •the bark is often loosened by their larvae, and slips off entirely 



