356 
ANNUAL REPORT OF NEW-YORK 
PEACH. TRUNK. 
4. THE PEACH .—Persica vulgarts. 
AFFECTING THE ROOT. 
59 . Peach-tree Borer, Trochilium exitiosum, Say. (Lepidoptera. Trochi- 
liid®.) [Plate I, fig. 6 the male, fig. 7 the female.] 
Boring in and eroding the bark and solid wood, causing the gum 
to exude so copiously as to form a thick mass around the root 
intermingled with the castings of the worm, which is cylindrical, 
soft, white, with a tawny yellowish red head and sixteen feet, and 
grows to more than half an inch in length. It forms a tough 
pod-like cocoon on the side of the root, jutting slightly above the 
surface. The moth comes abroad the last half of July and in 
August, and resembles a wasp in its appearance. It is of a dark 
steel blue color, and in the male the wings are clear and glassy 
with a dark blue band extending nearly across the forward pair 
beyond the middle, whilst in the female only the middle of the 
hind wings are clear and glassy and her abdomen has a broad 
bright orange yellow band upon its middle. Width 0.80 to 1.30. 
See Transactions, 1854, p. 813. 
This important insect is so well known throughout our country 
under the technical name JEgeria exitiosa that it is unfortunate 
this term cannot remain undisturbed. But so long ago as 1777 
Scopoli gave the name Trochilium to the same insects for which 
the Fabrician name JEgeria was published thirty year’s afterwards. 
The latter name, therefore, is merely a synonym of the former, 
and is wholly rejected by the latest and best authorities. 
AFFECTING THE TRUNK AND LIMBS. 
Apple Buprestis, a flattened pale yellow grub under the bark 
mining in the sap wood. See No. 3. 
Divaricated Buprestis, a worm similar to the preceding and 
found in the same situation. See No. 71. 
60. Elm bark-beetle, Tomicus liminaris, Harris. (Colcoptera. Scolytidso.) 
Small perforations like pin holes appearing in the bark particu¬ 
larly of diseased trees, from which in August and September 
