ROSE INSECTS. 
It measures a little more than one-twelfth of an inch in length, and has the upper surface of the 
body of a shining dark green colour, thickly covered with minute impressed dots, those on the elytra 
"being rather larger than those of the head and thorax, the parts of the mouth are pitchy. The 
antennae are black, the base slightly tinged with a pitchy hue, the prothorax and elytra have the lateral 
margins slightly recurved. The legs are short and broad, the fore legs reddish, with the tibitE out- 
wardly serrated, the four hind legs black. It is a very common species, and delights to fly in the 
hottest sunshine in the months of June and July amongst flowers. 
"We now recur again to the species which feed upon the leaves of the Rose, the accompanying figure 
representing the different modes of attack adopted by three different kinds of insects : each of these, 
however, possesses something or other peculiar in its economy which removes it from the hist of those 
species which simply feed upon the leaves of this plant. The figures 4, a, b, c, d, and e, illustrate the 
history of a species which, whilst it derives its nourishment from the leaves, makes use of portions 
of them for the construction of a house or moveable case, in which it resides during its caterpillar 
state. The figures g and h, illustrate the proceedings of a solitary species of bee, which, although 
it gnaws out large pieces from the leaves, does not do so for the purpose of obtaining nourishment 
therefrom, but simply in order to collect materials to line the interior of its nest, which it had already 
hollowed out in some adjoining wall or stump ; and figure f, shows the mode in which the leaves are 
disfigured by the caterpillars of a small species of moth, which feed between the upper and lower 
surface of the leaf, eating only the parenchyme. 
Ltda inanita. — For many years past we have regularly observed this insect in our garden at 
Hammersmith, in the last week in May and the first in June. It is constantly seen flying over, or 
settling upon, the leaves of the Rose, and its extremely glossy yellow wings, together with the rapidity 
of its movements 
render it quite a 
conspicuous ob- 
ject. Although, 
however, we have 
so repeatedly seen 
the insect, we have 
never yet been 
able to find a single 
male, all the indi- 
viduals which we 
have observed and 
captured having 
been females. This 
sex measures five-twelfths of an inch in length, and the expansion of its fore-wings measures 
seven-eighths of an inch. The head and eyes are black ; the front of the face, a heart-shaped spot 
between the antennae, and a curved spot behind each eye, pale yellow. The jaws, palpi, and antenna? 
are also pale yellow, the extremity of the jaws being black, and the tips of the antenna? rather 
brownish. The thorax is black above, with the collar pale yellow on each side. The abdomen is 
black, with the second, third, fourth, fifth, and terminal segments of a rich orange yellow. The legs 
are pale yellow, and the wings very glossy, and of a yellow tinge, with dark veins. Figure e repre- 
sents the female of the natural size, and the woodcut (Fig. 6) shows it magnified. 
The male, which is extremely rare (and for an opportunity of figuring which we are indebted to 
James Francis Stephens, Esq.,) is smaller than its partner, measuring only one-third of an inch in 
length, and five-eighths of an inch in the expansion of its wings, it differs also in being considerably 
darker in its colours; the antennee being brown, except the two basal joints; the abdomen is black, 
the fourth and fifth segments being variegated with yellow, of which colour there are also spots at 
the sides of the preceding and following segments ; the head is black beneath, with the sides pale 
yellow, the body (including the whole of the abdomen) is pale yellow beneath, with the hind part of 
the mesosternum, and the greater part of the metasternum, black. The wings have very little of the 
yellow tinge of the female. The woodcut (Fig. 5) shows the male magnified in the same proportion 
as the female. "We believe that no figure has hitherto been published of the male. 
At a later period of the year, namely, in the month of July and beginning of August, we met 
with a curious object on the same Rose trees which we are able at once to recognise as the larva of this 
Sawfly and its moveable case ; Fig. 4, cl, in the preceding cut, represents this larva with its head and the 
anterior segments of the body protruded out of the case, b, the wider part of which is formed of por- 
Fig. 5. 
Fig. 6. 
§ 
-ss^rp g 
