750 Report oF THE ENTOMOLOGIST OF THE 
Diamond-back Moth,’ and “The European Cabbage Web 
Moth.” , 
It is not a native, but apparently the exact time of its importa- 
tion is not known. In this country it was first observed in IIli- 
nois by Dr. Fitch,* in 1855. From its habit of hiding under a 
web he described it as “ The Cabbage Web Moth” (Cerastoma — 
brassicella). We found it in New York in 1869. Several Euro- 
pean and American writers state that there are but two broods 
in a year. Curtist says: “ There is a succession of broods in 
England.” Prof. Gillette} found the cocoons on early cabbage 
in June in Colorado, and says: “There are probably three or 
four broods in a season.” It was observed near Jamaica, N. Y., 
the latter part of July. Adults and larve were found every 
month from then until November 27, at which time the larve 
were still feeding on cabbage. It was not noticed in injurious 
numbers the past fall on Long Island. In some seasons it occurs 
in numbers sufficient to do a great deal of damage to rape and 
turnips. It is also known to feed on cauliflower and Brussels 
sprouts as well as on cabbage. It injures cabbage principally in 
the early part of the season. 
Life-history and description. No one in this country 
seems to have noticed the eggs. Curtis, in his Farm Insects, 
figures them in a cluster, but does not mention them in the text. 
It seems scarcely probable that they are laid in clusters, when 
the caterpillars are always found feeding separately the same as 
the larve of the cabbage butterfly and moth. 
The caterpillar is a pale green worm about one-fourth inch 
long, with stiff dark hairs scattered over the body. It is usually 
found hidden under a web. If touched it will fall a short dis- 
tance and hang by a delicate silken thread. When feeding it 
usually leaves its web, especially when nearly full grown. Very 
often, as shown in Fig. 6, Plate I, they do not eat entirely 
through the leaf tissue. This habit has given them the name of 
“Cabbage Leaf-miner.” When full grown the larva spins a thin 
cocoon in a fold on either side of the leaf. According to Curtis, 
who quotes from M. Duponchel, between 12 and 20 days are re- 
quired for the larva to change to a chrysalis and finally to the adult. 
* Fitch’s First Report on Noxious, Beneficial and Other Insects of N. Y., 1855, pp. 170-175, __ 
+ Farm Insects, by John Ourtis, F. L. 8., etc. 
+ Bull. No. 24, Colo. Agri. Exp. Sta., 1893, 
