73 
PINE. 
Pine Sawfly. Lophyrus pini , Curtis. 
Lophyrus pini. 
Pine Sawfly, pupa (taken from cocoon), and larva ; magnified. Pine leaves 
injured by Sawfly. 
On the 14th of July Mr. W. E. Cattley, of Edderton, Ross-sliire, 
wrote to me regarding an unusually severe attack of Pine Sawfly 
caterpillars, and his communication is of great interest, as he gives 
an observation of the summer brood of caterpillars developing to Saw- 
flies early in September. 
Possibly the existence of this summer’s brood in Scotland, as well 
as in Germany, may be known to foresters. I have had a few or 
solitary specimens of summer cocoons, and also an observation of the 
attack of caterpillars at Darnaway, Forres, having suddenly vanished 
in the early part of July, 1881, after a cold wet day; but otherwise 
nothing possibly bearing on this subject has previously been sent in 
by the contributors to these Reports, and the subject is of much im¬ 
portance relatively to methods of prevention of attack. 
Mr. Cattley observed:—“Six or eight years ago I enclosed a 
portion of moor—say seventy acres—and planted it with Scotch Fir 
and a few Larch. The ground rises so that the upper end is about 
200 ft. above the lower. The trees at the lower end are about 5 ft. 
high, and those at the upper end 1-| ft. to 2 ft. high. 
“ The first I saw of the caterpillar, which I take to be Lophyrus 
pini , was three years ago, but they were then few. This year they 
have increased alarmingly, and I have kept two men for a fortnight 
killing them with paraffin or crushing them with a thick glove. But 
they are fairly beating me ; and among the smaller trees, at the upper 
end they have stripped the trees like a swarm of locusts. 
