There are several species of Otiorhynchus weevil, notably O. sulcatus, the black weevil of Vines, and 0. tenebricosus, the red legged weevil of Peaches and many other plants; but the clay coloured species is the one with which I have had most to do. And he is quite enough. He is absolutely the most difficult of all garden pests to destroy, being remarkably tough, and having a truly feline tenacity of life. A harassed Raspberry grower once showed me a collection of weevils in a bottle of paraffin, averring that they had been there three weeks, and were subsisting on the liquid. I cannot vouch for the time, but I can for the petroleum and the weevils, which were alive and vigorous. I have seen acres of Raspberries half ruined by them. The Raspberry weevil is a little more than 1/4 inch long, and has a vicious and resolute air. I have known it go from Raspberries to Peas and attack them. No application that will not kill the plant will destroy the weevil. There is but one plan out of many tried which I have seen really effectual, and that is for two persons to go amongst the rows at night, each carrying a piece of tarred board, which, when ready for action, he holds sloping upwards from the base of the canes. A lantern is then flashed on to the Raspberries, which induces the weevi's to fall. Or the canes may be shaken.
This small red, blackheaded caterpillar is a troublesome pest, though not so bad as the weevil.
So far as my personal investigations go, it feeds only in spring; so that, although damage may be done by it, the plant has a chance to make fresh growth. Not so with the weevil. Unlike the latter, the red bud caterpillar is a day feeder. (1) Except where the culture is extensive, hand-picking or crushing suffices. (2) Dustings of sharp soot are good.