INSECTS INJURIOUS TO THE BUTTERNUT. 



337 



INSECTS INJURIOUS TO THE BUTTERNUT. 



{Juglans cinerea.) 



AFFECTING THE TRUNK AND LIMBS. 



1. The spotted lkptostylus 



Leptostylus macula (Say.) 



Order Coleoptera ; family Cerambycid^. 



Under the bark of old decaying trees, a longicorn larva, clianging to a pupa in its 

 cell and early in July giving out a small thick long-horned beetle of a brown or chest- 

 nut color with the sides of its thorax and a band on its wing-covers ash-gray, the 

 latter sprinkled over with coarse punctures and large blackish dots, the thorax on 

 each side of its disk with a black stripe interrupted in its middle. Length, 0.25 inch. 



Dr. Fitch, in his third report, states that the bark of old trees will 

 sometimes be found everywhere filled with these grubs, which in the 

 mouth of June may be seen changed to short thick pale-yellow pupae, 

 with a few perfect insects that are newly hatched and have not yet left 

 the tree. Mr. Harrington has taken specimens on the butternut, but not 

 so frequently as on the bitter hickory. 



2. Gaurotes cijanipennis Say. 



This beetle was observed by Mr. F. B. 

 Caulfleld pairing and ovipositing on the 

 butternut. (Can. Nat., xiii, p. 60.) 



The beetle. — Black; antennae and feet testaceous ; 

 elytra blue. Body black, tinged with cupreous, 

 punctured ; head densely punctured ; a longitudi- 

 nal, obsolete, impressed line; antennte rather 

 shorter than the body, testaceous; trophi piceous- 

 yellow; thorax impunctured; an obtuse tubercle 

 each side; scutel black; elytra violaceous blue; 

 punctures numerous, small, profound ; tip trun- 

 cate; humerus rather prominent ; feet testaceous. 

 Length two-fifths of an inch nearly. In form of 

 body, it very much rasexahXes Leptura collaris and L. 

 virginea, to which genus I would have referred it, 

 but for the small thoracic tubercles. (Say). 



Fig. 126. Gaurotes cyanipennit- 

 Smith and Marx, del. 



3. Cryptorhynchus parochus Say. 



Several larvae and pupiE of this weevil have been found by Mr. F. G. 

 Schaupp under the bark of a butternut in Brooklyn, L. I. The dura- 

 tion of the pupa state was from fourteen to sixteen days. 



Beetle.— Brown variegated ; tibiie not angulated at base; thighs feebly bidentate; 

 the teeth small and distant. Length 6 to6.5™"\ Claws simple, divergent. (LeConte.) 

 5 ent 22 



