25 



mean a corresponding long life period for the adult insects, as they may 

 be found at any time from early in May until the middle of September, 

 and must pass the winter in this stage. An adult was found at Leesburg, 

 Ohio, April 3d, 1905, in an old gall formed by the locust twig borer 

 (Ecdytolopha insiticiana) . It is not known if the insect had passed the 

 winter there or had simply sought this place as a temporary refuge. 



Lan'a: The larva is a small white, footless grub, about one-fifth: inch in 

 length as it lies in a curved position in the bud ; head about one-third of the diam- 

 eter of the body, brownish in color, with a few scattered spines or hairs; body 

 thick, tapering abruptly to a blunt point at the posterior end ; a few scattered hairs 

 on the three thoracic segments. 



Fig. 10. 



The Locust Bud Weevil (^Apion nigrum): a, larva; b, pupa; c, adult; 

 d, black locust bud lowing opening through which the adult beetle 

 emerged. (Original.) 



Pupa: White or yellowish-white, one- fourth inch long, slenderer than the 

 larva, head slightly darker in color than body, and with ten spines on top and front; 

 proboscis folded along under side of body; two pairs of spines on dorsal side 

 of the third thoracic segment, and two spines on posterior end of. abdomen, also 

 one at the end of the femur of each leg. 



REMEDIES. 



As this curculio feeds during the larval and pupal stages entirely 

 within the unopened buds, it is impossible to reach it with insecticides, 

 but as the adults feed upon the foliage throughout the whole summer. 

 It becomes possible to poison them at that time. Although the insect is 



