Indian forest insects of economic importance Coleoptera . e beetle is of elongate form, with well-marked shoulders to the elytra, Beetle. a prominent prothorax, and a vertical or horizontal head. The antennae are very characteristic of the insects, having eleven (sometimes twelve) joints each, usually long, thebasal one swollen, and theothers tumid at the antennae are heldover the back in the positionof rest; the basal joint fitsinto the eye on one side,the latter being hollowedout to take this insertion,and becoming thus reni-form, or kidney-shaped. Itwill be usually found thatthe
Indian forest insects of economic importance Coleoptera . e beetle is of elongate form, with well-marked shoulders to the elytra, Beetle. a prominent prothorax, and a vertical or horizontal head. The antennae are very characteristic of the insects, having eleven (sometimes twelve) joints each, usually long, thebasal one swollen, and theothers tumid at the antennae are heldover the back in the positionof rest; the basal joint fitsinto the eye on one side,the latter being hollowedout to take this insertion,and becoming thus reni-form, or kidney-shaped. Itwill be usually found thatthe antennae are longer inthe male than in the mandibles are long andpowerful, and the palpsprominent. The thorax isusually square, and may bespined, and is at timescorrugated on the dor-sal surface. The legsare strong and long; thetarsus of the foot is four-jointed, the first three jointsbeing bilobed, and spongyand hairy. The elytra areflat, and the beetles of allsorts of colours, but rarelymetallic (as in the case ofthe Buprestidae). They are. 187.—Afasstcus unicolor, Gahzn. $ \. .Sinn licni Shun States. 270 FAMILY CERAMBYCIDAE at times covered with hair, the pubescence being often silk), and givingsilvery reflections under the play of light; or the hair may be in tufts onthem, with often additional tufts on the antennae, as in the case of thebrightly coloured diurnal Thysia wallichii (fig. 17). The female, in additionto having shorter antennae than the male, has at times the pygidium exposedbelow the apices of the elytra, and has a strong non-extruded ovipositorfor egg-laying, the egg being often put into deep crevices in the bark bymeans of this instrument (cf. figs. 28, 29). The larva (fig. 30, e) is a stout, elongate, segmented, practically legless grub when full-grown, as shown in fig. 30, e, and is Larva. usually white, or yellowish white, or pale orange in colour; the segments taper only slightly from the anterior end downwards. Those we shall consider here
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbeetles, bookyear1914
