Indian forest insects of economic importance Coleoptera . e placed wide apart. Theyleave the last two segments of the abdomen exposed, the last^> being constricted behind. These segments are thickly and deeplypunctate. Length, mm. Life History.—Only a few specimens were were found beneath the bark of the sal-treefelled on 13 May in the Kachugaon forests whichwas subsequently infested by the bark-borer. Thehisterid attacks the Sphaerotrypes beetles, and theirgrubs probably feed upon the larvae also. Use in the Forest.—These two insects are ofconsiderable use, provided they exi
Indian forest insects of economic importance Coleoptera . e placed wide apart. Theyleave the last two segments of the abdomen exposed, the last^> being constricted behind. These segments are thickly and deeplypunctate. Length, mm. Life History.—Only a few specimens were were found beneath the bark of the sal-treefelled on 13 May in the Kachugaon forests whichwas subsequently infested by the bark-borer. Thehisterid attacks the Sphaerotrypes beetles, and theirgrubs probably feed upon the larvae also. Use in the Forest.—These two insects are ofconsiderable use, provided they exist in sufficient abundance to exercise a salutary check on the bark-Platysoma sp., predaceous , . _,. T , , . upon Sphaerotrypes bormg Pest ThlS T have not >et ascertained. Anyassamensis, Steb. Goalpara. insect predaceous upon a pest is, however, of great value, and the life history of the Platysoma requires working out. The number of generations in the year, period passed in larvalstage, and food eaten by larvae, etc., all require to be FIG. 320. Habitat. Sphaerotrypes globulus, Blandford. REFERENCE.—Blandf. Trans. Ent. Soc. Loud. 63 (1894). -Central Provinces Sal Forests. Trees Attacked.—Sal (Shorea robusta); Terminals tomcntosa. Mandla,Central Provinces. Beetle.—Squat, ovate, black, elytra black with a suggestion of adark reddish tinge, under-surface with a silvery pubescence ; antennae orange, legs dark red. Vertex of head reticu-Description. late and punctate, more punctate laterallv, front reticulate-punctate, with a short median longitudinal raised line reaching from level of base of eyes to near lowermargin of front, in other cases stretching to about level of middle of eyes;a semicircular fringe of whitish hairs stretches along anterior edge ofvertex between eyes. Prothorax constricted in anterior portion andmuch depressed, the median line terminating anteriorly at the depressedpart ; surface finely reticulate and punctate, slightly shining, with
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbeetles, bookyear1914
