Indian forest insects of economic importance Coleoptera . bbins Rrachyxystns .f/t??/^>i,j/!> •. 1 -i. Male and In-cilc^. mul lirnnrlic^ of iirt><l;ir b . inrc, ;nnl silr (bottom one), showing the we dod of a ick. .\orili-\\ < ^i 111 L; . PLATE Young Silver Fir in situ in the forest, showing the whole of the new shootsof the year killed by the weevil Brachyxvstus subsignatits* Fst.—The photographwas taken by Mr. J. H. Lace, , in the Baghi ^Forest, Simla Division, at theend of June. FAMILY CURCULIOXIDAE 409 orange, die, and drop off. Once the method of operati
Indian forest insects of economic importance Coleoptera . bbins Rrachyxystns .f/t??/^>i,j/!> •. 1 -i. Male and In-cilc^. mul lirnnrlic^ of iirt><l;ir b . inrc, ;nnl silr (bottom one), showing the we dod of a ick. .\orili-\\ < ^i 111 L; . PLATE Young Silver Fir in situ in the forest, showing the whole of the new shootsof the year killed by the weevil Brachyxvstus subsignatits* Fst.—The photographwas taken by Mr. J. H. Lace, , in the Baghi ^Forest, Simla Division, at theend of June. FAMILY CURCULIOXIDAE 409 orange, die, and drop off. Once the method of operation of the beetle hasbeen clearly understood it is the easiest thing possible to detect. From anexamination of large numbers of attacked trees in the forest, and by watch-ing the insect feed upon new silver-fir shoots in captivity, it appears that theweevils do not actually feed upon the needles to any great extent. Their chieffood consists of the green epidermis of the new shoot of the year. To get atthis they bite off or gnaw down the new spring needles, so as to remove themand permit their reaching the epidermis of the shoot. This latter they eithergnaw off in elongate strips or eat it away in patches right down to the pointwhere last years shoot commences. One
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbeetles, bookyear1914
