Report on the Rocky Mountain locust and other insects now injuring or likely to injure field and garden crops in the western states and territories . Fig. .).—Full-grown Northern 708 REPORT UNITED STATES GEOLOGICAL SURVEY. thread-like lines ; while the upper part is dark, with an interrupted white threadrunuing exactly through the middle of the back. The prolegs, ten in number, are marked on their outer middle andon their tip black. Beneath,the caterpillar is of a livid green. Jlost of the Maine species of Leii-eania have light-colored wings, withdark streaks and dots, but th
Report on the Rocky Mountain locust and other insects now injuring or likely to injure field and garden crops in the western states and territories . Fig. .).—Full-grown Northern 708 REPORT UNITED STATES GEOLOGICAL SURVEY. thread-like lines ; while the upper part is dark, with an interrupted white threadrunuing exactly through the middle of the back. The prolegs, ten in number, are marked on their outer middle andon their tip black. Beneath,the caterpillar is of a livid green. Jlost of the Maine species of Leii-eania have light-colored wings, withdark streaks and dots, but the uni-piiHcta is larger and darker prevailing hues are rusty gray-ish-brown, sprinkled or pepperedsparsely with black scales. Theupper part of the head, the frontpart of the thorax or collar, andfront margin of the fore wing, are ofFig. 7.—a, male moth; b, abdomen of female— size; a lighter shade. Between the frontc. eye; rf, base of male autennie; c. base of female antenna; niargia of the fore win and theenlarged.—(After Eiley.) vein, or raised line reaching out to the white spot in the center, is a rusty patch. Just beyond, about half-way betweenthe white
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectb, booksubjectinsects
