Annual report of the Agricultural Experiment Station of the University of Minnesota . Fig. GO.—Woolly aphis.— (a) root of young tree illustrating deformation; (b) section of root with aphides clustered over it: (c) root louse, female; (a and b) natural size; (c) much enlarged. After Marlatt, Division of Entomology, Dep. of Agriculture. INSECTS INJURIOUS IN 1902. 69. Fig. 61.—Anthrenus scrophulariae, Linn.— (a) larva; (b) pupa, dorsal view with split iarva skin surrounding; (c) pupa, ventral view removed from skin; (d) beetle—hair lines showing natural size (after Riley).

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Keywords: ., bookcentury1800, bookdecade1890, booksubjectagriculture, bookyear