2 
REPORT OF THE ENTOMOLOGIST. PAT 
through the fall, winter, and early spring months, assuming the pupa 
state (Pl. IV, Fig. 1, i) but about a week before the beetles issue. 
Experiments made upon the larva of the imported elm leaf-beetle 
show that Paris green water is very efiective in destroying it, in both 
the larva and beetle states; and, while I have had no opportunity of 
making such experiments with the species in question, I have no doubt 
that it would here prove equally destructive. The larve are, through-: 
out their existence, quite sluggish and drop to the ground on slight dis- 
turbance. A good shaking of an infested tree, therefore, will bring 
most of them to the ground, and experience shows that they have little 
or no capacity for mounting the tree again. This remedy will be appli- 
table to cultivated trees, especially betore they get too large. 
THE JUNIPER WEB-WORM. 
(Dapsitia rutilana, Hiibn.) 
[Ord. LEPIDOPTERA; Fam. TORTRICIDZ.| 
Plate V, Fig. 1. 
Among the insects to which I have given some attention during the 
year is one which may be known by the above popular name. Mr. P. 
H. Foster, of the Babylon nurseries, Babylon, L. I., had already corre- 
sponded with me about the ravages of this worm in 1877, and, after 
rearing the perfect moth and ascertaining the principal facts in its 
natural history, I had given no further attention to the matter until the 
following letter was received: 
BaByton, L, I., May 13, 1878. 
Drar Str: I send you, by mail this day, some specimens of diseased Juniper. I 
find a very small worm encased in a covering, some of which, no doubt, can still be 
found in the specimen sent. Also one perfect insect and one pupa can be found. I 
have in my nursery from 200 to 300 fine Irish and Swedish Junipers, and unless I can 
find a remedy they will soon be worthless tome. . 
Yours, respectfully, 
P. H. FOSTER. 
The injuries of this insect had never before been reported in this 
country, but the species has long been known to affect Junipers in the 
south of England and other parts of Europe. The probability is, there- 
fore, that it is a comparatively recent importation, though Mr. Foster 
can give me no information that satisfactorily bears upon the point, 
since he himself never imported any Junipers, but obtained his stock 
when quite small of Messrs. Higgins, of Flushing. 
Heine* cites this species as having but a limited distribution, reach- 
ing in Germany to Mecklenburg. It is rare there, the moth appearing 
in June and July. 
In England the moth is known to appear as late as July and August. 
All the facts aseertained about the habits of the species would indi- 
cate that there is great irregularity in development, but there is but 
one annual brood. The insect hibernates at different stages of larval 
development, and the chrysalis is found throughout the spring months. 
The moths begin to appear as early as April, but continue to issue dur- 
ing the summer. 
The eggs, which are not yet known, are doubtless laid singly upon 
different parts of the tree during the summer months and the worms 
*Schmetterlinge Denutschlands und der Schweiz. 
