. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. 15 millinietres, respectively. The general color of the body is white, with a yellowish tinge j head, black ; a black or brownish shield-shaped spot on the dorsal surface of the first segment. Soon after they begin feeding the larviiB turn darker and before the first molt are usually of a deep rose or brownish color. The piliferous tubercles are not yet very prominent. The true legs at first are slightly. Fig. 2.âHeliothis armigera: a, egg from side; h, do. from topâenlarged ; c, full-grown larva ; d, earthe
. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. 15 millinietres, respectively. The general color of the body is white, with a yellowish tinge j head, black ; a black or brownish shield-shaped spot on the dorsal surface of the first segment. Soon after they begin feeding the larviiB turn darker and before the first molt are usually of a deep rose or brownish color. The piliferous tubercles are not yet very prominent. The true legs at first are slightly. Fig. 2.âHeliothis armigera: a, egg from side; h, do. from topâenlarged ; c, full-grown larva ; d, earthen cell with con- tained pupa; e, moth with â wings spread;/, do. at restânat- ural size (after Riley). dusky, but soon turn much darker, are hairy and provided with a small bifid claw. At first the first pair of prolegs seem to be a little less robust than the others, and hence may be slightly weaker. Obscure dark lateral patches are found on the prolegs, which at this stage are further provided with fine small hooks. By the time of the first molt the worm has attained a length of millimetres and is slightly larger in the middle. After the first molt the larva is at first of a yellowish color, but again turns darker rapidly when it begins feeding. The true prolegs become much darker, and at their insertion next the body a small dusky spot, both anteriorly and posteriorly, is found. The dark lateral patches on the prolegs are also more distinct, each i)roleg being now provided with nine small hooks. By the time of the second molt the larva measures millimetres in length and is still a little wider in the middle. Soon after the second molt the worm measures millimetres in length. The most noticeable changes are, that the piliferous tubercles are now much more prominent; that the very small tubercles found thickly scattered all over the body first become quite disceruable to the naked Please note that these images are extracted from scanned page images tha
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