INSECTS INJURIOUS TO THE HICKORY. 69 
31. The vaporer-moth caterpillar, Orgyia leucostigma Sm.-Abb. 
32. Tolype velleda (Stoll). 
33. Acronycta ulmi Harris. (Corr. 312.) 
34. Paraphia unipunctaria (Haworth). 
35, Metanema quercivoraria Guenée. 
36. Nephopteryx undulatella Clemens. 
37. Nephopteryx? ulmi-arrosorella Clemens. 
38. Bactra? argutana Cl. (also on sumach, witch-hazel, and black-thorn). 
39. Lithocolletis argentinotella Clem. Larva makes a tentiform mine in 
the under side of the leaves; rarely in the wpper side. (Chambers.) 
40. Lithocolletis ulmella Chamb. Larva makes a flat mine in the upper 
side of the leaf. (Chambers.) 
41. Argyresthia austerella Zeller. This moth, I am convinced, feeds in 
some way on it; and in latter May and in June the imago may be 
found about the trees.” (Chambers.) 
HYMENOPTERA. 
42. The horn-tail borer, Tremex columba (Linn.). 
43. Elm saw-fly, Cimbex americana var. Oimbex laportet. 
INSECTS INJURIOUS TO THE HICKORY. 
(Carya alba and tomentosa.) 
INJURING THE TRUNK AND BRANCHES. 
1. THE COMMON HICKORY BORER. 
Goes tigrinus (De Geer). 
Order COLEOPTERA; family CERAMBYCIDZ. 
Boring large holes lengthwise in the solid wood, a cream-colored grub, with the first 
segment behind the head flattened, pale tawny-yellowish, changing to a pupa in its 
burrow, and in summer appearing as a long-horned brown beetle an inch long, cov- 
ered with a close gray pubescence, the wing-covers with a broad dark brown band 
beyond their middle and another on their base, the thorax with an erect blunt spine 
on each side; the antenn pale yellowish, with their first joint dark brown. (Fitch.) 
This is perhaps the most common borer in the hickory and walnut in 
the Northern States. According to Fitch the young worm lives at first 
upon the soft outer layers of the sap-wood, mining a shallow cavity all 
around the orifice in the bark, and the bark dies and turns black as far 
as this burrow extends. Its jaws having at length become sufficiently 
strong, it gnaws its way into the solid wood from the upper part of its 
burrow under the bark, boring obliquely inward and upward, all the 
lower part of its burrow being commonly packed with its sawdust-like 
chips. Finally, having completed its growth, it extends the upper end 
of its burrow outward again to the bark. 
2. THE BEAUTIFUL HICKORY BORER. 
Goes pulcher (Haldeman). 
Similar to the preceding. ‘Scarce, but a few are found every season in the shag- 
bark and pignut hickory, June and July.” (Dr. T. Hadge, Buffalo, N. Y., Amer. 
Ent., iii, p. 270.) 
