. Elementary lessons on insects . great variety of coloration. A large and most important family of leaf-eating beetles, containing some of the worst crop pests (Fig. 42). The Colorado potato beetle belongs here. Note especially: (a) The form, sculpturing and coloring of the body. (b) The blunt herbivorous mouthparts. (c) The form of tarsi, similar to that of the preceding family. 15. The snout beetles or weevils: This is a group of several families of small herbivo- rous beetles, nearly all of which have the bar^^7$>£ front of the head prolonged into a beak, *â *â *<*« a**)- with the
. Elementary lessons on insects . great variety of coloration. A large and most important family of leaf-eating beetles, containing some of the worst crop pests (Fig. 42). The Colorado potato beetle belongs here. Note especially: (a) The form, sculpturing and coloring of the body. (b) The blunt herbivorous mouthparts. (c) The form of tarsi, similar to that of the preceding family. 15. The snout beetles or weevils: This is a group of several families of small herbivo- rous beetles, nearly all of which have the bar^^7$>£ front of the head prolonged into a beak, *â *â *<*« a**)- with the mouth parts carried out to its tip and the antennae part way down its sides. They are mostly hard shelled and convex; and there are numberless kinds of them. Note especially: (a) The form of the head and position of its appendages. (b) The antennae elbowed in middle and clubbed at the tip. (c) The feet, formed as in the two preceding groups. Compare together beetle larvae of the following types: (a) Active, free ranging, carnivorous larvae of ground beetles or of water beetles. (b) Free living but sedentary larvae of leaf beetles. (c) Soil inhabiting; white grubs and wire worms.
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Photo credit: © The Bookworm Collection / Alamy / Afripics
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Keywords: ., bookcentury1900, bookcollecti, bookdecade1920, booksubjectinsects
