Elementary entomology ([c1912]) Elementary entomology elementaryentomo00sand Year: [c1912] number of prolegs on the abdomen, and lack the hard shield usually found on the prothorax of lepidopterous cater- pillars. Most of them feed on foliage, and many are quite injurious. Sev- eral species are soft- bodied and covered with a viscid, slimy matter, which has given them the name of ' slugs.' Among the more com- mon species are the yellow-and-green currant worms (Xcwatiis ribe- sii), which devour the foliage of currants and gooseberries, the rose- slug (Monostegia rosae], w FIG. 386. The pear-sl
Elementary entomology ([c1912]) Elementary entomology elementaryentomo00sand Year: [c1912] number of prolegs on the abdomen, and lack the hard shield usually found on the prothorax of lepidopterous cater- pillars. Most of them feed on foliage, and many are quite injurious. Sev- eral species are soft- bodied and covered with a viscid, slimy matter, which has given them the name of ' slugs.' Among the more com- mon species are the yellow-and-green currant worms (Xcwatiis ribe- sii), which devour the foliage of currants and gooseberries, the rose- slug (Monostegia rosae], w FIG. 386. The pear-slug ft, adult saw-fly, female; />, larva with slime removed ; c, same in normal state ; d, leaves with larva (natural size), (a, b, c, much enlarged.) (After Marlatt, United States Department of Agriculture) which has defoliated and thus destroyed large areas of larch in New England and Canada. FIG. 387. Pear-slug, illustrating method of ovi- position and emergence of larva. (Enlarged) a, cutting of cell beneath epidermis of leaf, showing the tip of the ovipositor: 6, the cell after the egg has been deposited; c, same after the escape of the larva. (After Marlatt, United States Department of Agriculture)
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Photo credit: © Bookworm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: archive, book, drawing, historical, history, illustration, image, page, picture, print, reference, vintage
