INSECTS AFFECTING I'ARK A.Vn WOODLAND TREES 269 



horned beetle al)out i incli lono-, brown, covered with an incumbent, short, 

 tawny, gray pubescence, more dense on the win;^ covers, which h\tter have 

 a broad, dark brown band beyond their middle and another on their base. 

 The thorax has an erect blunt spine on each side, and the antennae are 

 pale yellowish except for the dark brown first joint. 



Food plants. This sj^ecies has iieen rc^corded b\- I)r Hopkins, as 

 minin^r the inner bark anel sapwood of living- hickor\' antl oak, while Mr 

 Beutenmuller states that it works in the solid wood of hickor\-, oak and 

 walnut, seeming to prefer white oak. This species is probaldv more 

 destructive south of New York. 



Hickory saperda 

 Sa/>c'n/i! th'scoidca Fabr. 

 .\ large, white, legless grub, making good sized galleries in bark and sapwood, is \er)' 

 likely to be this insect. 



This species is a rather common borer in hickory, though ordinarily it 

 does not cause a great deal of damage. It frequently follows the work of 

 the destructive hickory bark borer, .S c o 1 y t u s q u a d r i s p i n o s u s .Sa\-, 

 and is occasionally so abundant that a piece of bark 6 inches square may 

 contain a dozen or more larvae. It is remarkable in having the sexes so 

 unlike that one unacquainted with it, would certainly consider them ilistinct 

 species. There are individuals to be found having the same color and 

 markings as the females, and some very poorly developed specimens of the 

 latter entirely lack the characteristic markings of the sex. 



Life history. The beetles occur abroad the latter part of June and in 

 July. The larvae feed partly on the bark and partly on the wood, and on 

 approaching maturity enter either tin- bark or the wood and transform to 

 beetles. Nothing is known concerning the diuMtion of the lite cycle or 

 method of oviposition. 



Food plants. This species has been recorded from the walnut as well 

 as hickory. It does not appear to infest other trees. 



Description. The femaU; is about }^ and the male about ]. inch in 

 lentJ^th. The former mav be recognized bv the \eIlowish thorax and the 



