
brood is first recorded. Later the insect was made the subjectt of iiii 
article by Dr. J. A. Lintner, in whicli it is re]K)rted to liave occasioned 
dania«ie to ])eaches in several localities in tlie State of New York. We 
also have accounts by Prol". ('. \\ Kiley of injury to strawberry plants 
in Illinois, referred by him io A narsia lineatellaj smd also articles on 
this insect particularly as a strawberry miner by Prof. S. A. Forbes. 
Very great damage to peaches in Kent and Sussex counties, Del., is 
later reported by Kiley and Howard. 
On the racitic slope record is made of injury by it to various stone 
fruits by Mr. Coquillett, and later similar damage is reported in a letter 
from Mr. Knight, of Vancouver. We have also the results of the 
investigations by Mr. Ehrhorn in California, reported by Mr. Craw, and 
the recently published account by Mr. Cordley relative to the insect as 
affecting peaches and prunes in Oregon, and also in strawberry beds — a 
similar but undoubtedly distinct insect. 
In addition to these more imx^ortant published accounts, injury from 
the twig-borer has been often recognized and reported in later years. 
Nearly all these reports refer to the injury to twigs of stone fruits and 
very few to damage to strawberries, the strawberry-infesting insect 
either being more rare or less often observed. The records of this 
Department show the presence of the twig-borer in at least twelve 
States, and give a range which indicates that it is practically as wide- 
spread in this country as is the culture of its principal food plant. 
If not already cosmopolitan in distribution the twig-borer is rapidly 
becoming so, and will probably follow the peach and other stone fruits 
wherever they are cultivated, especially as its peculiar hibernating 
habit greatly fiicilitates its distribution in nursery stock. 
It is at times a very injurious insect, and is often notably abundant 
and destructive in such important peach districts as those of Mary- 
land, Delaware, and Virginia. In California and elsewhere on the 
Pacific slope its injuries have a wider range, including, as indicated, 
the apricot, almond, nectarine, prune, pear, and perhaps other fruits, in 
addition to the peach. In California it is listed as one of the three or 
four worst Insect pests occurring in the State. In Washington as many 
as 100 larvae, or instances of damage to as many twigs, have been 
counted on a single tree. 
HISTORY AND HABITS. 
The fall brood of larv.ne discovered by Mr. Ehrhorn may be taken as 
a convenient starting point in the life history of the twig-borer. In 
the fall, as reported by Mr. Ehrhorn (Craw), they appear as very small 
larvjie, living and working in the spongy bark chiefly at the crotches 
of the branches of the peach, and he surmises that they are from eggs 
deposited in these situations. Here the larvi^ are supi)osed to grow 
slowly nntil the new growth appears in the spring, when they leave 
their cells in the bark and enter the new shoots. It is stated, also, 
that frequently the larvai are nearly full grown when they attack the 
