Ontario Sessional Papers, 1871-72, . d Missouri Report, page 110,) under the name of the Cabbage Plusia (P. brassicce.)He gives the following account of it:— In the months of and September the larva (Fig. 93 a)may be found quite abun-dant on the cabbage, gnawing large, irregular holes in the leaves. It is a pale green, trans-lucent worm, marked longitudinally with still paler more opaque lines, and, like all the knownlarvae of the familyto which it belongs, it has but two pair of abdominal prolegs, the two an-terior segments, which^ are usually furnished with such legs in ordina
Ontario Sessional Papers, 1871-72, . d Missouri Report, page 110,) under the name of the Cabbage Plusia (P. brassicce.)He gives the following account of it:— In the months of and September the larva (Fig. 93 a)may be found quite abun-dant on the cabbage, gnawing large, irregular holes in the leaves. It is a pale green, trans-lucent worm, marked longitudinally with still paler more opaque lines, and, like all the knownlarvae of the familyto which it belongs, it has but two pair of abdominal prolegs, the two an-terior segments, which^ are usually furnished with such legs in ordinary caterpillars, nothaving the slightest trace of any. Consequently, they have to loop the body, as representedin the figure, and are true span-worms. Their bodies are very soft and tender, and as theylive exposed on the outside of the plants, and often rest motionless, with the body arched, forhours at a time, they are espied and devoured by many of their enemies, such as birds, toads, 426 35 Victoria. Sessional Papers (No. 5). A. 1871-. FiG. 03. etc. They are also subject to the attacks of at least two parasites, and die very often fromdisease, especially in wet weather ; so thatthey are never likely to increase quite as badlyas the butterflies. When full grown this worm weaves avery thin loose white cocoon, sometimes betweenthe leaves of the plant on which it fed, but moreoften in some more sheltered situation, andchances to a chrysalis (Fig. 93 J) which variesfrom pale yellowish green to brown, and has aconsiderable protuberance at the end of thewing and leg cases, causedby the long proboscisof the enclosed moth being bent back at thatpoint. This chrysalis is soft, the skin being verythin, and it is furnished at the extremity withan obtuse, roughened projection which emitstwo converging points, and several short curvedbristles, by the aid of which it is enabled to cling to its cocoon. • The moth is of a dark smoky-gray, inclining to brown, variegated with light grayish-
Size: 1670px × 1496px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorontariol, bookcentury1800, bookdecade1870, bookyear1876
