Guide to the study of insects, and a treatise on those injurious and beneficial to crops: for the use of colleges, farm-schools, and agriculturists . gall •^j e, swelling of tendril ;/,</,/<,mother gall-louselateral, dorsal,and ventralviews ; £, anten-na;^, two-jointedtarsus. Fig. 521 a,. Fig. 521. </, healthy root ; 6, one on which the lice are working, repre-senting the swellings caused by their punctures ; c, a rootwhich has been deserted by them, and where the rootlets have 524 HEMIPTEKA. begun to decay ; rf, d, <l, lice of natural size on the largerroots ; t, female pupa, dors
Guide to the study of insects, and a treatise on those injurious and beneficial to crops: for the use of colleges, farm-schools, and agriculturists . gall •^j e, swelling of tendril ;/,</,/<,mother gall-louselateral, dorsal,and ventralviews ; £, anten-na;^, two-jointedtarsus. Fig. 521 a,. Fig. 521. </, healthy root ; 6, one on which the lice are working, repre-senting the swellings caused by their punctures ; c, a rootwhich has been deserted by them, and where the rootlets have 524 HEMIPTEKA. begun to decay ; rf, d, <l, lice of natural size on the largerroots ; t, female pupa, dorsal view ; t/j the same, ventral view;//, winged female., dorsal view ; //, same, ventral view ; /, mag-nitied antenna of winged insect ; t/, side view of winglessfemale laying eggs; /• shows how the punctures of the licecause the larger roots to decay. Fig. 521 b, sexual Phyllox-era1 ; «, female vitifoliw, ventral view, showing the large eggthrough the transparent skin of the body ; A, dorsal view ofthe same ; c, tarsus, greatly enlarged ; cl, shrunken anal joints as they appear after ovi-• position ; , male of anotherspecies, /-*. carycecaulis Riley,dorsal view ; the dot in ihecircle indicates the naturalof the insect. (After
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Keywords: ., bookcentury1800, bookdecade1870, bookpublishe, booksubjectinsects
