ATTACKING THE TRUNK. 



141 



solution of soda, as recommended for the round-headed borer 

 of the apple (No. 2), or mound the trees about midsummer 

 with earth, as recommended for the peach-tree borer (Xo. 97). 



No. 66.— The Pigeon Tremex. 



Tremex Columha Linn. 



The female Pigeon Tremex is represented in Fig. 147. It 

 is a large- wasp-like creature, which measures, when its wings 

 are expanded, nearly two 

 inches across. The body is J^i<^- ^47. 



cylindrical, and about an 

 inch and a half long ex- 

 clusive of its boring instru- 

 ment, which projects about 

 three-eighths of an inch be- 

 yond the body. The wings 

 are of a smoky-brown color, 

 and semi-transparent ; the 

 head and thorax are reddish, 

 varied with black, and the 

 abdomen is black, crossed by 



seven yellow bands, all except the first two interrupted in 

 the middle. The horny tail and a round spot at its base are 

 ochre-yellow. 



The male (Fig. 148) is unliUe the female: it is smaller and 

 has no borer. Its wings are more transparent; the body is 

 reddish, varied with black, in form 

 somewhat flattened, rather wider be- 

 hind, and ends with a conical horn. 

 The length of the body is from three- 

 fourths of an inch to an inch or more, 

 and the wings expand about an inch 

 and a half. 



The female bores into the wood of 

 the tree with her borer, and, when the 

 hole is made deep enough, drops an egg into it. The egg is 



Fig. us. 



