. Some insects injurious to garden and orchard crops : a series of articles dealing with insects of this class. g, althoughnaturally this order is lessregular. The larva. — When firsthatched, the larva, as may beseen by comparing the figureat e with c, looks quite unlikethe mature form. The tuber-cles which cover the body are somewhat more conspicuous, the headand legs are much larger in proportion, and the spines (see/) protrud-ing from the body are very long, measuring nearly one third that of thebody, including the tubercles. The spines are black at the base andnearly white toward their api
. Some insects injurious to garden and orchard crops : a series of articles dealing with insects of this class. g, althoughnaturally this order is lessregular. The larva. — When firsthatched, the larva, as may beseen by comparing the figureat e with c, looks quite unlikethe mature form. The tuber-cles which cover the body are somewhat more conspicuous, the headand legs are much larger in proportion, and the spines (see/) protrud-ing from the body are very long, measuring nearly one third that of thebody, including the tubercles. The spines are black at the base andnearly white toward their apices, which are capitate, like those of someother species of larvae in the post embryonic stage. The color is nearlyuniform light gray, with a slightly pruinose surface, and the head, eyes,sutures of the legs, and certain other portions are darker. The red ofsome internal portions can be seen through the anterior portion of thebody, the thoracic and first abdominal segments. The length, in thesomewhat contracted position which the larva assumes in death, isabout ; the width, ().—No. 19 6. lb b c Fig. 19.—Disonycha xanthomelcena: a, beetle; b, eggmass, showing mode of escape of larva at right; bb,sculpture of egg; c; full grown larva; d, pupa; e, newlyhatched larva; /, abdominal segment of same—a, c, d,five times natural size; b, e, more enlarged; bb,f, stillmore enlarged (original). 82 INSECTS INJURIOUS TO GARDEN AND ORCHARD CROPS. The mature larva is figured at c. In life it is dull nearly uniformleaden gray in color, with darker head and still darker brown mouth-parts. The length is from 8 to 9mm, and the width 3 to lmm. The pupa.—The pupa is of nearly the same color as the larva, beinga little lighter. It is well illustrated at d. The beetle.—The adult beetle, shown in the illustration at a. is shin-ing black in color, sometimes with a green or bluish luster. The pro-thorax and abdomen are red in living specimens and reddish yellow indried material
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Keywords: ., bookcentury1800, bookdecade1890, bookpublisherwashingtondcusdept
