Bui. 1107, U. S. Dept. of Agriculture. 



Plate III. 



The Lead-Cable Borer. 



Fig. 1.— Female beetle in typical egg or parent gallery of host tree. Note a slight return toward 

 the surface after entrance is secured. Enlarged about twice. Insert, beetle, enlarged about 

 twice. Fig. 2.— Dorsal view of beetle, enlarged SJ times, showing rugosities on prothorax, 

 and tibial spurs. Fig. 3.— Pair of beetles mating at entrance of egg gallery. Note elytral tip 

 of female, just visible. Theriormal time for copulation seems to be shortly after the female 

 has constructed her entrance gallery. Enlarged about 3J times. Fig. 4. — View of portion of 

 parent or egg gaUery , showing larval mines and a few larvae on either side. Theselarvae are prob- 

 ably from another egg gallery or returning toward their own gallery. Enlarged about If times. 

 Fig. 5. — Lateral view of larva in mine of host tree. Note the distance left clear between larva 

 and bhnd end of mine, this space being used by the larva in reversing; also dark area pn 

 chitinized Une of prothorax. Enlarged about lOJ times. Photographs by R. D. Hartman. 



