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12. Emphytus maculatus, Norton. The Strawberry Saw-fly. 
Body thickest on the anterior segments, tapering behind. Head 
small, pale yellowish-brown with six black spots, two on each side 
and two in front. Color pale greenish with a faint whitish bloom. 
Skin semi-transparent. There is a broken band along each side 
inclining to a bluish green. Underside of body pale yellow, feet 
and pro-legs pale yellow, twenty-two in number. Length, six-tenths 
of an inch. 
There are two broods each year, the larvae appearing in May and 
August. They enter the ground and form small cocoons of earth in 
which to pass the pupa state. 
Feed on the leaves of the strawberry. 
13. Nematus ventricosus, Klug. 
The young larva has the head, tail and feet black, with many 
black spots arranged around the body, from each of which arise two 
or more black hairs. After moulting the last time they are of a 
grass-green color, except the large, dark eye-spots on each side of 
the head, the joint next the head and the last two joints, which are 
yellow. Length, three-quarters of an inch. Number of legs, twenty. 
They spin silken cocoons either in the ground or among the rub¬ 
bish on the surface, and occasionally among the branches of a bush. 
There are two broods each year, the first appearing in the latter 
part of May or early in June and the second in August. 
Feed on the leaves of*the gooseberry or currant, to which they are 
very destructive. 
14. Nematus trilineatus, Norton. 
Color light green, palest at the head and tail, with five rows of 
black dots along the back, the outer row on each side irregular and 
with intervals, On each side above the feet is another row of 
larger black spots. The three anterior pairs of feet are black. Num¬ 
ber of legs twenty. 
They feed on the leaves of the weeping willow which they devour 
extensively. 
15. Nematus salicis-pisum, Walsh. 
Produces galls on a species of willow, and enters the ground to go 
into the pupa state. 
16. Nematus salicis-pomum, Walsh. 
Color pale greenish white. Head pale brown with lateral blackish 
eye-spots. Length about one-fiftli of an inch. Number of feet, 
twenty. 
It forms galls on the heart-leaved willow, within which it passes 
the pupa state. 
17. Nematus ventralis, Say. 
The larva is a black slug-like worm with twenty legs, the six 
anterior ones black, and the fourteen abdominal ones blue. The 
body is ornamented with a row of twelve cream colored spots along 
each side. 
It is found feeding on different species of willow, but is partial 
to the white willow. 
