Report of the State Entomologist on the noxious and beneficial insects of the state of Illinois . Fig. 12.—Melon plant-louse (.Aphis cucumeris, n. s.) Pupa, Head and prothorax, base and tip of antennae dusky, eyes darkred, sides of mesothorax and metathorax white, wing pads black,abdomen brownish-yellow, except posteriorly, where it is body pruinose, legs white, tarsi and tips of tibiae black. 87 WINGLESS Fig. 13—Melon plant-louse (Aphis cucumeris, n. female, magnified 40 diameters. Wing- Body green or greenish-black throaghout, antennae black at baseand tip; cornic
Report of the State Entomologist on the noxious and beneficial insects of the state of Illinois . Fig. 12.—Melon plant-louse (.Aphis cucumeris, n. s.) Pupa, Head and prothorax, base and tip of antennae dusky, eyes darkred, sides of mesothorax and metathorax white, wing pads black,abdomen brownish-yellow, except posteriorly, where it is body pruinose, legs white, tarsi and tips of tibiae black. 87 WINGLESS Fig. 13—Melon plant-louse (Aphis cucumeris, n. female, magnified 40 diameters. Wing- Body green or greenish-black throaghout, antennae black at baseand tip; cornicles black, tail yellowish, legs pale, with tarsi andtip of tibiae black. Body broad ovale, widest behind, thorax with-out spnie. Cornicles minutely roughened. Antennae with imbricatedtransverse ridges, excepting the two basal joints. Body .06 inchlong, .037 inch wide, antennae .05 inch in length, cornicles .013 inch. ROOT FORM. Broad ovate, tapering and acuminate posteriorly, pale bluish green. Head, eyes, base and tip of antennae, two basal J^^ J T ^^-^ ^iid last joints of tarsi, tips of tibiae and ^^^ --k^^^,^^;:::^^^^ iemoi-a, and tip of cornicles, black; legs white. Beak very long, reaching to thethird segment of the abdomen, tip black-ish, mouth a,t and about the base ofrostrum dusky. Antennae short, reachingthe base of the abdomen, live-jointed,and the fifth with a setaceous tip lessthan twice as long as the b
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectbenefic, bookyear1876
