180 EXPERIMENTAL FARMS, 
63 VICTORIA, A. 1900 
~“ 
The following description was taken of the larve : 
Full-grown caterpillar,—Length at rest, } of aninch. General appearance: slender, 
semi-translucent green caterpillars with the dark green dorsal band showing distinctly 
through the skin, rather fainter on 2nd, 3rd, and 13th segments. This is bordered on 
each side by a double white sub-dorsal band, which also is rather fainter on the 2nd, 
3rd and 13th segments. On the 2nd segment are two distinct black spots, one on each 
side. Head one-twenty-fifth of an inch in width, smooth and shining, whitish, splashed 
with light brown on the cheeks, slightly furrowed at vertex, and bearing a few pale 
hairs. Mandibles brownish ; ocelli black. Spiracles white and very small, joined by a 
faint whitish line. On the 2nd, 3rd and 4th segments this line is represented by a few 
faint white dots and is obsolete on segment 13. Thoracic feet and prolegs of the same’ 
colour as the body ; the thoracic feet each bear exteriorily two black dots, one above 
the other. The whole body is sparsely covered with slender pale hairs, the ventral 
surface lighter in colour than the dorsal. When at rest these caterpillars have a 
habit of curling round to the side of the body, their heads and the first three or four 
segments of the body. The length of the pupal period in October was 17 days. 
THE RASPBERRY WEB-WORM 
(Lyda multingnata, Nort. ). 
Attack..—Bright green smooth false-caterpillars, when full-grown over half an inch 
in length, which web together many of the leaves on raspberry canes, making a tent in 
which several of the caterpillars feed together. 
A rather interesting new enemy of the raspberry has for some years occurred at St. 
John, N.B.; larvee were received in 1898, from which two males and a large number of 
female saw-flies were reared last summer. These have been kindly identified by Dr. 
Howard as Lyda multisignata, Nort. The caterpillars when full-grown are over half an 
inch in length, the head round and smooth, the cheeks and back of the head chestnut 
brown, as well as the mandibles, and a large round patch in front of the face. Ocelli 
black. On the segment next to the head is the thoracic shield, which in some specimens 
is also darkened with brown patches, and on each side of the throat beneath, running 
across the same segment, from the back of the head to the bases of the first pair of 
thoracic feet, is a short dark brown chitinous band. Antenne 7-jointed, and for caterpillars 
conspicuous. On each side beneath the last segment is also a 3-jointed antenna-like appen- 
dage protruding downwards. These appendages in Lyda are called abdominal antenne 
by Dr. A. S. Packard in his Zeat Book of Entomology, 1898, page 165, and a figure is 
given of a Lyda larva which might almost be used as an illustration for the species 
under discussion. The upper flap of the last segment is rounded at the tip and bears 
three dark triangular marks extending from the base towards the apex, but not reaching 
it ; the median, only half the length of the lateral ones ; lying in a depression at the 
extremity, there is also a distinct median dark dot. The lower flap of the last segment, 
dark brown narrowly margined with green, and as well as the upper, bearing a sparse 
fringe of short slender bristles. 
This attack was first brought to my notice by Mr. George Raymond, of Blooms- 
field (King’s Co.), N.B., who wrote under date August 1, 1898 :—‘ A friend of mine in 
St. John has a small garden, where she has been growing raspberries for a number of 
years. For the last six years they have been troubled with a worm on the leaves, at 
first very small, and on the under side. As they grow, they spin a web drawing the 
leaves all round them and destroying the foliage. They have been much more destruc- 
tive this year and it is only by persistent picking of the leaves that they can be kept in 
check.’ 
Miss H. Raymond, in whose garden the injury was done, wrote a full account 
covering most of the facts mentioned above, but stating that the larve were gregarious, 
about six being found in the same tent, and from her account and from specimens 
forwarded to the Division the attack of this species upon raspberries resembles very 
