Grubs are an excellent bait for many kinds of fish. In angling for the grayling (see Umber) as well as trout, the ash-grub is pre-ferable to all others. This insect is of a milk-white colour, a plump round form, with a red head. There is another very common grub, which is longer and thinner than the ash-grub ; has also a red head, but two rows of legs along the belly ; it is tougher and yellower. To preserve grubs, they should be kept in bran, which will render them very firm ; but the ash-grub is always so tender, that it can with difficulty be employed as a bait: hence, it should be wrapped in a piece of stiff hair with the arming, and about a straw's breadth left to project at the head of the hook, to prevent the grub from sliding off, when baited. The horse-hair must be white, or of a colour perfectly resembling that of the bait; as otherwise it will be suspected by the fish. - For the different methods of destroying grubs, in general, see Chafer.