The Mexican cotton-boll weevil (Anthonomus grandis Boh.) . r went to Texas inDecember, and in company with Mr. Schwarz carefully studied the con-dition of affairs at that season and talked with many prominent cot-ton growers. The results of these supplementary investigations werepublished in Circular J$o. 14, which was issued both in English and inSpanish. During 1896 still other investigations were made by thegentlemen mentioned and by Mr. C. L. Marlatt, who studied especiallythe question of remedies, and the results obtained necessitate the pub-lication of still another circular on the subje
The Mexican cotton-boll weevil (Anthonomus grandis Boh.) . r went to Texas inDecember, and in company with Mr. Schwarz carefully studied the con-dition of affairs at that season and talked with many prominent cot-ton growers. The results of these supplementary investigations werepublished in Circular J$o. 14, which was issued both in English and inSpanish. During 1896 still other investigations were made by thegentlemen mentioned and by Mr. C. L. Marlatt, who studied especiallythe question of remedies, and the results obtained necessitate the pub-lication of still another circular on the subject. In this circular all ofthe essential points of the previous circulars have been repeated, thesection on remedies has been entirely rewritten, and a paragraph hasbeen added on the work of the weevil during 1896. GENERAL APPEARANCE AND METHOD OF WORK. This insect is a small, grayish weevil, of the shape and generalappearance shown in fig. 1, a, and measuring a little less than a quar-ter of an inch in length. It is found in the cotton fields throughout. Fig. 1.—Anthonomus grandis: a, adult beetle; b, pupa; c, larva—allenlarged. the season, puncturing and laying its eggs in the squares and bollsThe larvae, of the shape and appearance shown at fig. 1, c, and measuring a little over three-eighths of an inch in length when full grownlive within the buds and bolls and feed upon their interior substanceThe squares attacked usually drop, but most of the damaged bollsremain upon the plant and become stunted or dwarfed, except late inthe season, when they either dry or rot. DISTRIBUTION. This insect through its ravages caused the abandonment of cottonculture around Monclova, Mexico, about 1862. Two or three years agomexicancottonbol218howa
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