. A text-book of agricultural zoology. Zoology, Agricultural; Zoology, Economic. COLEOPTEEA OR BEETLES. 139 â will observe, sitting on the edge of the leaf, a clay-coloured beetle: this insect is one of the Pea and Bean Weevils, either Sitones lineatuH or S. erinitus. These beetles are about one- fifth of an inch in length, the former having three dark longitudinal strips on the thorax, the latter somewhat larger and clay-coloured all over. LJ. Like the other two weevils described, they ^ hibernate as adults; but they are also found 'â in the larval state. The hibernators come out on the wing
. A text-book of agricultural zoology. Zoology, Agricultural; Zoology, Economic. COLEOPTEEA OR BEETLES. 139 â will observe, sitting on the edge of the leaf, a clay-coloured beetle: this insect is one of the Pea and Bean Weevils, either Sitones lineatuH or S. erinitus. These beetles are about one- fifth of an inch in length, the former having three dark longitudinal strips on the thorax, the latter somewhat larger and clay-coloured all over. LJ. Like the other two weevils described, they ^ hibernate as adults; but they are also found 'â in the larval state. The hibernators come out on the wing the first warm days in spring, and feed off clover, lucern, and trifolium, as well as peas and beans. It is espeoiallj^ the last that they damage by eating away the leaves, taking large notches out of them. These sitones are most timid: directly they hear, or feel, the least movement, they fall (s«raJ^K^iâ!/),s),"mt.' to the ground on their backs, and remain as (t'li'iteiTead.) "^«°''""^- if dead. Mimicking death is a common habit amongst weevils. The larvffi live in summer at the roots of peas and beans, and often do much damage to them. They mature before the end of siimmer, the adults from them laying their eggs upon the roots of clover, where the white, footless, curved grubs remain feeding throughout the winter. The adults which hibernate pass the winter in all manner of places. They have been noticed in numbers in barley stubble : I have seen them in great quantities in corn-stacks, and in a variety of other places. Field peas often suffer very severely, as well as garden produce. Prevention and Remedies. â The destruction of all winter shelter is essential. "When field peas are attacked, a good dress- ing of soot and then a light rolling does much good : the soot annoys them, and when lying on their backs on the ground, a light roller destroys a great number, besides breaking down the ground, and so doing away with the shelter they g
Size: 1429px × 1749px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1899
