LONG HORNED BEETLES. 131 



if applied during the morning of a warm day, will dry in a few- 

 hours, and form a tenacious coating, not easily dissolved by rain. 

 The soap solution should be applied early in June, and a second 

 time during the early part of July." 



There are other species of Saperda, all injurious to trees. 

 S. obliqua Say feeds in the wood of alder and hazel ; 5". calcarata 

 Say is decidedly injurious to the poplar and cottonwood ; S. cre- 

 tata Newm. (Fig. 135), a beautiful beetle, very similar to Candida, 

 but with the white bands twice interrupted, also has similar habits. 

 being found upon apple and thorns (Crataegus spec.) ; 5". vestida, 

 Say, 5\ tridentata Oliv., and S. lateralis Fab., occur upon a variety 

 of forest trees, such as linden, poplar and others. S. disco ida, 

 Fab., is destructive to hickory; S. concolor, Lee, forms gall-like 

 swellings on the younger trunks of the aspen; S. puncticollis Sav 

 is found in the stems of the poison ivy and oak. 



THE RASPBERRY CAXE-EORER. 



(Oberea bimaculata Oliv.). 



This beetle is similar to the species of Saperda, but it has 

 a much longer and more narrow black body ; the surface of 'the 

 thorax and the fore part of the breast is pale-yellow, with two 

 small black spots, absent in some specimens ; or there is an 

 additional small black spot on the posterior edge of the pro- 

 thorax, just where the elytra join the same . The elytra are cov- 

 .ered with coarse indentations, and are slightly notched at the 

 ends. Fig. 136, Plate IV shows this beetle and its work. 



Such, or similar beetles belonging to this genus, as the 

 0. f'avipes Hald., which is black with yellow legs, appear during 

 the month of June, and after pairing the female deposits her 

 eggs in the canes of the raspberry and blackberry in a very singu- 

 lar manner: "With her mandibles she girdles the young grow- 

 ing cane near the tip in two places, one ring being about an incb 

 below the other, and between the rings the cane is pierced, and 

 an egg thrust into its substance near the middle, its location 



