Stenocorus Putaior, 489 



the magnifier. The antennae are about as long as the whole in- 

 sect, tapering a little from the base to the point, and have ten 

 joints, of which the second and third terminate in a small spine. 

 The thorax is even, without any prominences ; and the elytra or 

 wing-cases have each two points at the apex. Individual insects 

 differ considerably in magnitude, from four and a half to six- 

 tenths of an inch in length. Their form is slender ; the largest 

 is only ^ of an inch in breadth at the base of the elytra. It 

 may be called Stenocorus (Putator) obscure-brunneus, albido- 

 pilosus ; thorace inermi ; elytris bidentatis ; antennis longitudine 

 corporis, articulis 2**" et 3''° spinula terminatis. 



This insect is probably diffused over a large portion of the 

 United States, perhaps from Maine to Georgia, wherever the oaks 

 which it prefers are found. 



As the leaves are in fuU vigour in July, preparing the descend- 

 ing sap, and as the greatest part of the new wood is formed after 

 the summer solstice, the loss of leaves at this season must diminish 

 the tree's increase in diameter, in proportion to the quantity of 

 leaves taken from it. But the falling of the branches with the 

 larva in them enables us, though we cannot destroy the species, 

 to check its ravages in some degree. The branches should be 

 collected from the time they begin till they cease to fall, and 

 carefully burnt. 



* The upper lip is a kind of scale which covers the mandibles 

 on the upper side ; this is slightly notched, dotted, and fringed 

 with hairs. The inner edge of the mandibles is curved, without 

 notches, having a little within the edge a curved line set with 

 short strong bristles. The maxillae are divided at the outer end, 

 the exterior division the largest, thin, and covered and fringed 

 with hairs; the interior smaller, stronger, and terminated with 

 thick-set curved bristles, forming a stiff brush at the base of the 

 outer division of the maxillary palpi of four joints, the terminal 

 joint largest, obliquely truncated and compressed. The lower 

 lip is deeply divided into two parts, thin, rounded at the ends, 



* This paragraph is slightly altered from the original, in which a plate is 

 here referred to, not sufficiently well executed, however, to allow of our 

 copying it.— Edit. 



