. Elementary entomology. Entomology. HYMENOPTERA 245. 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 "; Among the more com- mon species are the yellow-and-green currant worms {Nematus ribc- sii), which devour the foliage of currants and gooseberries, the rose- slug {Monostcgia rosac), which strips off the sur- face of rose leaves, leavi
. Elementary entomology. Entomology. HYMENOPTERA 245. 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 "; Among the more com- mon species are the yellow-and-green currant worms {Nematus ribc- sii), which devour the foliage of currants and gooseberries, the rose- slug {Monostcgia rosac), which strips off the sur- face of rose leaves, leaving them brown as if scorched, and the pear-slug {Eiiocampa cc- rasi), which injures pear and cherry foliage in the same manner. Other spe- cies often defoliate straw- berry and raspberry bushes, and there are numerous species which may be found on various shade and forest trees, one of the most injurious being the larch saw-fly {Ly- gaeoncmatjts crichsonii), which has defoliated and thus destroyed large areas of larch in New England and Canada. Fig. 3S6. The pear-slug a, adult saw-fly, female; /', lan^a 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). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Sanderson, Dwight, 1878-1944; Jackson, C. F. (Cicero Floyd), b. 1882; Metcalf Collection (North Carolina State University). NCRS. Boston, Ginn
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Keywords: ., bookcentury1900, bookdecade1, booksubjectentomology, bookyear1912
