WRINKLED FRUIT-TREE BEETLE. hl 
It is of the shape figured at p. 76, magnified, and shining, but (on 
account of its wrinkled surface) not so much so as the rather larger 
kind, the Scolytus pruni. The fore body is ‘‘extremely closely covered 
with deep oblong punctures, confluent into wrinkles in front and at 
sides.” The wing-cases with punctures on the interstices as large and 
deep as those in the striw. The tips of the wing-cases, the horns, and 
the legs are reddish-brown. 
This kind is found on the Continent between, and feeding in, the 
bark and sap-wood of various trees, especially of Apple, Plum, and 
Cherry; but in this country it is not, so far as 1am aware, recorded 
as more than “rather common,” and until I was favoured in the past 
season with very good specimens of small boughs of Plum exceedingly 
injured by its presence, I was not aware of it being a decided orchard 
pest here. 
On the 7th of June Mr. Robert Newstead, F.E.S., Curator of the 
Grosvenor Museum, Chester, wrote to inform me that he was sending 
me some pieces of Plum-branches infested with Scolytus rugulosus, of 
which he observed :—‘‘ By carefully removing the bark you will find 
the insect in all stages, e.g., larva, pupa, and imago. ‘The branches 
are from Plum-trees in my father’s garden at Ince, Cheshire, where the 
attack has proved most destructive, as also at other gardens in the 
same village. I have also received it from Shropshire, where it had 
been equally destructive. Ihave now had the species under investi- 
gation for nearly two years.” 
Mr. Newstead mentioned that he had some notes of the life-history 
of the beetle, which he purposed shortly to publish; and he also 
kindly lent me his own drawing from life of the maggot and pupa 
much magnified, which, with his permission, I have had copied, and 
insert at p. 76. 
The life-history, tuhen from various writers, is that the little 
beetles appear in May or April, and begin to bore into the bark; and 
the females tunnel their galleries in or between the inner bark and 
sap-wood. Here they lay their white eggs singly side by side along 
the ‘mother-gallery,’’ and from these eggs the grubs hatch after a few 
days, and feed on the inner bark by preference, but otherwise in the 
sap-wood. The maggot-tunnels necessarily all start off, as with so 
very many of the bark-beetles, at right angles from the mother-gallery, 
by the sides of which the eggs were laid; and when full-fed, if there 
is still a good thickness of bark over them, they turn to chrysalids at 
the ends of their tunnels; otherwise, if the bark is too thin a protec- 
tion from their having eaten it away, or from other causes, they pierce 
a little way down into the solid wood. 
This was very observable in the small branches sent me. At first, 
from the short tunnel down into the wood being stopped at the outside 
