. A manual of injurious insects [microform] : with methods of prevention and remedy for their attacks to food crops, forest trees, and fruit : to which is appended a short introduction to entomology. Insect pests; Agricultural pests; Entomology; Insectes nuisibles, Lutte contre les; Ennemis des cultures, Lutte contre les; Entomologie. PKA8.—PEA MOTH. 163 PEAS. Pea Moth. Gmpholitha pisana, Gu^ 1, Caterpillar on Pea; 2, cater^)illar magnified; 3 and 4, moth, nat. size and mag. The caterpillars of this moth cause the " worm-eaten " or "maggotty " Peas often found in old p
. A manual of injurious insects [microform] : with methods of prevention and remedy for their attacks to food crops, forest trees, and fruit : to which is appended a short introduction to entomology. Insect pests; Agricultural pests; Entomology; Insectes nuisibles, Lutte contre les; Ennemis des cultures, Lutte contre les; Entomologie. PKA8.—PEA MOTH. 163 PEAS. Pea Moth. Gmpholitha pisana, Gu^ 1, Caterpillar on Pea; 2, cater^)illar magnified; 3 and 4, moth, nat. size and mag. The caterpillars of this moth cause the " worm-eaten " or "maggotty " Peas often found in old pods w'-;n the crop is maturmg with the insides eaten away, and partly filled with, and partly surrounded by, the excrement left by the cater- pillar. These caterpillars or maggots are fleshy and slightly hairy,"" about or somewhat more than a quarter of an inch in length, and are generally yellowish in colour, with a black head, a brown band on the ring next to the head, and eight brown dots on most of the following rings. They sometimes, how- ever, vary in colour; in some specimens the head and the next ring are brown, and in some they are intensely black. The legs on the three rings next to the head are black. The caterpillars go down into the earth to change, where they spin a cocoon (that is, a kind of egg-shaped covering formed of silken threads drawn from the mouth) in which they remain till spring, when they turn to chrysalids, out of which the moths appear in June. The moths are rather more than half an inch in the spread of the wings, satiny, and mouse-coloured. The upper wings have a row of very short white streaks directed backwards from the front edge, and have a silvery oval ring with five short black lines inside it placed near the hinder margin. y Although maggotty Peas are one of the commonest of mfestations, the attack appear? to be so little thought of that enquiry is very rarely made about it. I have therefore merely given above the short notice o
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectentomology, bookyear1
