x x tak oe eee 
*" ‘ 
2d joint, and ending in two or three hairs. The thin membranous labrum is divided 
into two parts, the basal solid, the terminal portion forming a moveable flap, overlap- 
ping and reaching nearly to the end of the mandibles when closed; the basal portion 
is shorter than broad, being broadly trapezoidal and smooth; the outer division is 
broader than long, the edges being rounded, so that it is almost broadly 
ovate: (transversely) and smooth, covered with long hairs. It is pale 
membranous, of a testaceous hue. Mandibles black, very thick and 
7 stout, with obtuse, rounded edges; they are almost as long as the base 
is broad. Mavxille membranous, flattened; maxillary palpi 2-jointed. 
Labium membranous, with a transverse chitinous band near the inser- 
tion of the 2-jointed palpi; both joints short; second one-half as thick 
as the first; edge hairy, the hairs reaching to the ends of the palpi. 
Length of body 0.50 inch; breadth of prothoracic segment, 4.2™™; 
breadth of head, 3.2™™. 
Fic. 31.—Lar- 
vainjurious Fig, 31 represents a larva which probably preys on the 
to hickory : . p </as 
insects. © young of this and other hickory insects, as it is not uncom- 
mon under the bark of the hickory in Massachusetts. It belongs to the 
family Nitidulide. 
INSECTS INJURIOUS TO THE HICKORY. 71 
6. THE HICKORY TWIG GIRDLER. 
Oncideres cingulatus (Say). 
Order COLEOPTERA ; family CERAMBYCIDA. 
Girdling and occasionally cutting off the twigs and branches, a thick-bodied, lon- 
gicorn, dark gray beetle 0.60 inch long, with its wing-covers sprinkled over with faint 
tawny yellow dots. 
This singular beetle, which 
inhabits the Eastern United 
States, appears in Pennsylvania 
from the middle of August until 
the middle of September. Fig. 
32 represents the beetle and the 
incision it makes, and Fig. 33, 
from a drawing sent us by the 
late Prof. Haldeman, shows how 
the beetle may 
injure several 
adjoining twigs. 
The editors of 
the American 
Entomologist (I, 
p. 76) state that 
they have count- 
ed in a persim- 
mon branch not 
more than two 
feet long, »as 
Wiivie girdles ay Many as eight 4... 43_Tree cut by the twig girdler._From Hayden's 
ter Riley. eggs, placed one por 
under each successive side-shoot, while they have found seven eggs all 
crowded together in a small hickory branch only three incheslong. Prof. 
