INSKCTS AI-'FPX riNC I'AUK AM) \\(li II )I, A .\ I) lUKKS 269 



liornetl l)ectlc al)mil i inch loiio, brown, c;)\cri'(l with an incuin!)fnt, short, 

 tawny, ^ray puhcsconcc-, morr dL-nse on thi- winj^' covers, which lattc-r have 

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

 The thorax has an erect blunt s])ine on each side, and the antennae are 

 pale yellowish except for the dark brown hrst joint. 



Food plants. Tliis species has been recorded \)y l)r Hopkins, as 

 mining' the inner bark and sapwood of livins:^ hickor\- and oak, while Mr 

 Bevitenmuller states that it works in the- soliel wood of hickor\', oak and 

 walni:t, seeminy to prefer white oak. Ihis species is probabh' more 

 destructive south of New York. 



Hickory saperda 



Sa/>(Tc/i7 (//sco/(/ri7 Fabr. 



A large, white, legless grub, making good sized galleries in hark and sapwood, is very 

 likely to be this insect. 



This species is a rather common borer in hickory, though ordinaril)- it 

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

 the destructive hickory bark borer, Scolytus cj u a d r i s p i n o s u s Say, 

 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 distinct 

 species. There are individuals to bs 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 the bark or the wood and transform to 

 beetles. Nothing is known concerning the duration of the life cycle or 

 method of oviposition. 



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

 as hickor\-. It does not appear to infest other trees. 



Description. The female is about 3/{ and the male about •, inch in 

 length. The former may be recognized by the yellowish thorax and the 



