30 INSECTS INJURIOUS TO FOREST AND SHADE TREES. 
21. Tok FEEBLE OAK-BORER. 
Goes debilis (Leconte). 
Order COLEOPTERA; family CERAMBYCID2®. 
A cylindrical long-horned beetle, which has recently been described by Dr. Le 
Conte, under the above name, is so uniformly found upon white oak trees in July and 
August, that I doubt not its larva is a borer in the trunks of these trees, perforat- 
ing the wood, probably, in a manner similar to that of the marked pine borer, 
and the worm resembling that in-its appearance. This beetle is half an inch long 
and scarcely a third as broad, of a black color, its wing-covers chestnut red, its sur- 
face having a marbled appearance, produced by short prostrate hairs of a dull ochre 
yellow color, except on the anterior half of the wing-covers, where they are gray, and 
are here followed by a tawny brown spot destitute of these paler hairs. It has only 
been found, as yet, in the State of New York, in the northern sections of which it is 
not rare. (Fitch.) 
22. THE BROWN PRIONUS. 
Orthosoma brunneum. 
Order COLEOPTERA; family CERAMBYCID®. 
The larve of this beetle has been found in rotten walnut and oak 
stumps by Mr. Hunt near Providence, but as it is more commonly met 
with in pine logs the reader is referred to the account of it given under 
pine insects. 
AFFECTING THE LIMBS AND TWIGS. 
23. THE OAK PRUNER. 
Elaphidion villosum (Fabr.). 
Order COLEOPTERA; family CERAMBYCID&. 
Cutting off the branches of the white and black oak (each containing a larva, 
which fall late in summer to the ground), longicorn larvie, which become beetles in the 
next midsummer, and lay their eggs near the axilla of a leaf stalk or small stem. 
In walking under oak trees in the autumn one’s attention is often di- 
rected to the large number of oak limbs and twigs lying on the ground. 
Upon examination they will be found to have been partially gnawn off 
Fic. 8. Oak Pruner: a, larva; b, side view of the same; c, pupa.—From Packard. 
by worms, the wind having further broken them off. This is the work 
of the grub of the oak pruner. The insect’s purpose in cutting off the 
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