72 INSECTS INJURIOUS TO FOREST AND SHADE TREES. 
Haldeman states that “both sexes are rather rare, particularly the male, 
which is rather smaller than the female, but with longer antennze. The 
female makes perforations (Fig. 32, b) in the branches of the tree upon 
which she lives, which are from half an inch to a quarter of an inch 
thick, in which she deposits her eggs (one of which is represented of 
the natural size at Fig. 32, e). She then proceeds to gnaw a groove, of 
about a tenth of an inch wide and deep, around the branch and below 
the place where the eggs are deposited, so that the exterior portion dies 
and the larva feeds upon the dead wood.” In the case noticed by Prof. 
Haldeman, the tree attacked was the shag-bark hickory (Carya alba) 
and the incisions were so shallow as not to break off until after the 
larva had matured within it, or nearly a year after the girdling. But in 
most of the cases observed by Messrs. Walsh and Riley upon pear and 
persimmon trees, “the twig was girdled so deeply that it broke off and 
fell to the ground with the first wind, and while the eggs that had been 
laid in it by the mother-beetle were still unhatched. Even in a girdled 
hickory twig 0.35 inch in diameter, which we have now lying before us, 
but a third part of its diameter is left in the middle ungnawed away, so 
that in spite of the superior toughness of this timber the twig could 
scarcely have stood a high wind without breaking off and falling to the 
ground.” 
7. THE SLENDER-FOOTED DYSPHAGA. 
Dysphaga tenuipes (Haldeman). 
Asmall grub, in the dead limb and twigs, producing in May a small black longi- 
_corn beetle with rough wing-covers but half as long as the abdomen and tinged with 
paler yellowish at their bases, its head having a furrow in the middle and its thorax 
cylindrical. Length 0.25inch. (Fitch). 
8. THE LURID DICERCA. 
Dicerca lurida (Fabricius). 
Order COLEOPTERA ; family BUPRESTID&. 
Boring in the trunks and limbs of the pig-nut hickory, a flat-headed grub of a yel- 
lowish-white color, changing to a flattened, hard-shelled beetle with short slender 
antenne, of a lurid dull brassy color above, and bright copper beneath, with the wing- 
covers lengthened into diverging obtuse points. 
The larva is of a yellowish-white color, very long, narrow, and depressed in form, 
but abruptly widened near the anterior extremity. The head is brownish, small, and 
sunk in the fore part of the first segment; the upper jaws are provided with three 
teeth, and are of a black color; and the antenn are very short. The segment which 
receives the head is short and transverse ; next to it is a large oval segment, broader 
than long, and depressed or flattened above and beneath. Behind this, the segments 
are very much narrowed and become gradually longer; but are still flattened, to the 
last, which is terminated by a rounded tubercle.or wart. There are no legs, nor any 
apparatus which can serve as such, except two small warts on the under side of the 
second segment from the thorax. (Harris.) 
The beetle is of a lurid or dull brassy color above, bright copper beneath, and thickly 
punctured all over; there are numerous irregular impressed lines, and several narrow 
elevated black spots on the wing-covers, the tips of each of which ends with two little 
points. Length 0.60-0.80 inch. 
