78 
FIRST ANNUAL REPORT OF THE 
Gouger larva always strikes a bee-line for the kernel. The Curculio larva leaves the 
fruit and goes underground to pass into the beetle state ; the Gouger larva remains 
throughout in the infested fruit. Of the Curculio there are two broods every year ; of 
the Gouger there is apparently but a single brood. Finally, every stone-fruit except 
Cherry that is stung by the Curculio falls, as a general rule, prematurely to the ground ; 
the while plums stung by the Gouger hang on the tree and ripen prematurely. 
CHAPTER XIII. — The Plum Moth. (Semasiaprunivora, Walsh.) Fig. 8. 
On July 28th, 1867, I was cutting into a number of plums infested by the Plum Cur¬ 
culio and the Plum Gouger, when to my great surprise I discovered in one of them 
v hat was evidently the larva (tig 8b) of some small moth. On comparing this figure 
with that of the larva of the Plum Curculio (tig 3c) — which scarcely differs in outline 
from that of the Plum Gouger — the difference will be seen at a single glance. The 
plum in which it occurred bore the crescent slit of the Curculio ; but what had been 
the history of the egg deposited by the mother Curculio—whether it had failed to 
hatch out — or whether it had hatched out and shortly afterwards perished — or 
\v hetliei it had hatched out and reached maturity in the plum, and then gone under¬ 
ground — I did not ascertain. In the year 1868 I hope to clear up all such points as 
these ; upon which depend a variety of interesting questions in the history of the motli- 
larva that accompanied the egg-slit of the Curculio. 
About a month afterwards, from a lot of infested plums gathered July 27th, the 
details of which have been given above (p. 68,) there commenced coming out the small 
moth figured and described herewith as the Plum Moth (fig. 3;) and specimens con¬ 
tinued to come out from time to time until the middle of September, amounting in 
all to lo. Evidently all these moths must have proceeded from larvae, such as tl^at 
which I had found in the plum at the end of July. 
In the preceding year, and at the same period, of the year, from the well-known Black- 
knot— a fungoid excrescence on the branches and twigs of the Plum-tree, which is 
infested by the larvae of the Curculio to nearly as great an extent as the Plum itself — I 
bred several specimens of this same moth; and in this same Black-knot I had previ¬ 
ously met with many of its larvae burrowing in the substance of the Black-knot. I bred 
two other specimens of the same moth nearly a month earlier in the season from a 
cockscomb-like hollow gall ( ulmicola , Fitch) on the leaf of an elm, which is produced 
and inhabited by Plant-lice, having previously found its larva inside the gall and amono- 
the Plant-lice. And lastly, I had bred on September 2d, 1866, a single specimen of this 
very same moth from a sessile, hollow gall about the size and shape of a large pea or a 
small cherry, on the leaf of the Red Oak {Quercus rubra,) which has been named and 
described by Mr. Bassett, ( Quercus singularis , Bassett.*) In both these two cases, the 
I formeily supposed that this gall was the nubilipennis of Harris. It is clearly the nubilipennis of 
1 itch. But I lather believe that the Quei-cus~sculpta of Bassett — a fleshy, juicy, subacid, grape-like 
eatable gall growing indifferently on the Black Oak (Quercus tinetoria) and the Red Oak — is the one 
that Harris had in view, when he spoke of his nubilipennis. For the mature female fly produced from 
Quercus-sculpta has a very distinct daik cloud on the terminal of its front wing, as Harris describes 
his gall-fly {Cynips nubilipennis)-, while both the male aud the female gall-fly of the other Oak-gall 
( Q. singularis) have no such cloud. Immature specimens, indeed, of the female Cynips q. sculpta, cut out 
of the gall, do not show this cloud; aud it was probably from such that Mr. Bassett drew up his descrip- 
