. Annual report of the Maine Agricultural Experiment Station . Osborn and Ball. Pr. la. Acad. Sci. IV, 215 (1897). This species which is so serious a pest in grasslands and occasionallyin wheat and oats in the south and west, especially in some parts of theMississippd valley is one of the common species in Maine but for thepast season it was not taken in such an abundance as to indicate asgreat an economic importance as in some other localities. It is a small gray species with three pairs of round black dots,—one pair on the head, another on the prothorax and a third on thescutellum. The clava
. Annual report of the Maine Agricultural Experiment Station . Osborn and Ball. Pr. la. Acad. Sci. IV, 215 (1897). This species which is so serious a pest in grasslands and occasionallyin wheat and oats in the south and west, especially in some parts of theMississippd valley is one of the common species in Maine but for thepast season it was not taken in such an abundance as to indicate asgreat an economic importance as in some other localities. It is a small gray species with three pairs of round black dots,—one pair on the head, another on the prothorax and a third on thescutellum. The claval cells are reticulate with brown or blackishsquares. Length 5 -mm. The larvae of this species are quite distinctly marked after the firstmoult. A black border passes from behind the eyes to near the tip of 124 MAINE AGRICULTURAL EXPERIMENT STATION, 1915- the abdomen, the rest of the body being light yellow or whitish. Thereare for more southern localities and probably for Maine at least twodistinct broods each summer and winter is passed in the egg Fig. 26. The inimical leafhopper (Deltocephalits inimicusj: a, Adult;b, face; c, vertex and pronotum; d, female genitalia; e, male genitalia;/, elytron: g, nymph. All enlarged. (After Osborn and Ball.) Eggs hatch in early spring and the young of the first generation reachtheir maturity the later part of June, and the eggs deposited by adultsof this generation hatch in a short time and the young develop duringmid-summer and reach maturity by August or early September. Theirdevelopment is irregular enough so that considerable numbers of nymphsand adults may be found at any time during the summer and earlyautumn but ordinarily adults are only found in late fall or early winterand it appears quite certain all deposited eggs before winter and thatthe winter is passed then in the egg stage. How far this life cycle willapplj to the condition in Maine it is somewhat difficult to say but fromthe abundance of well developed nymphs a
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