Half hours with insects . external enemies the lady birds are among themost efficient. (Fig. 156, Coccinella trifasciata; Fig. 157,Coccinella 0-notata, all slightly enlarged; Fig. 158, Hippo-u 17 210 HALF HOURS WITH IN^SECTS. [Packard. damia convergens; a, larva; 6, pupa; c, beetle, natural size ;and Fig. 159, Chilocorus.) These lady birds destroy theeggs and young grubs, and at times have been so efficientas to save to farmers a large proportion of their crops. Onthe opposite page are figures of different bugs and beetleswhich also prey upon the potato beetle, rendering the mostefficient serv
Half hours with insects . external enemies the lady birds are among themost efficient. (Fig. 156, Coccinella trifasciata; Fig. 157,Coccinella 0-notata, all slightly enlarged; Fig. 158, Hippo-u 17 210 HALF HOURS WITH IN^SECTS. [Packard. damia convergens; a, larva; 6, pupa; c, beetle, natural size ;and Fig. 159, Chilocorus.) These lady birds destroy theeggs and young grubs, and at times have been so efficientas to save to farmers a large proportion of their crops. Onthe opposite page are figures of different bugs and beetleswhich also prey upon the potato beetle, rendering the mostefficient service. Of the bugs (Hemiptera) the first twofigures* represent certain common forms said by Mr. Rileyand others to prey at times voraciously both upon the larvaand beetle itself; the remaining figures illustrate certainbeetles known to prey upon it. Some of the governments of Europe are taking measuresto prevent this insect from crossing the Atlantic and in-vading the potato fields of the old world. The Swiss au- FlG. Blister Beetles,thorities are on the alert, and the Belgian government haspromptly introduced a bill prohibiting the importation ofpotatoes from the United States and other countries, as ameasure of precaution against the introduction of the Colo-rado beetle and spread of the potato disease. The Blister beetles (Fig. 160, a, Lytta cinerea; 6, L. vit-tata), which have at times ravaged potato fields, are said byMr. Riley to devour the young of the Colorado potato beetle. *rig. 161, &, Arma spinosa; a, its beak, enlarged; c, the beak of Euschistuspunctipes, a bug otherwise closely resembling Arma. Fig. 162, JTarpactor cine-tus; b, beak. Fig. 163, Tetracha Virginica. Fig. 164, Calosoma caiidum. , PasimachTiS elongatus. Fig. 166, Earpalus caliginosus. (See page 211.) 18 PACKAKD.] mSECTS OF THE FIELD. 211 riG. 161. Fig. 162.
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectinsects, bookyear1881
