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In the larval stage, the small white can be a pest on cultivated cabbages, kale, radish, broccoli, and horseradish. The larva is considered a serious pest for commercial growth of cabbage and other Brassicaceae. [17] Pupa. The pupa of P. rapae is very similar to that of P. napi. It is brown to mottled-gray or yellowish, matching the background ...
Large white larvae experience four moultings and five instars. The first instar follows the hatching of the egg into large white larvae. The larvae are light yellow with distinctive brown heads and have soft bodies. The larvae appear to be very hairy. Following a moulting, the larvae enter the second instar. They have tubercles covered with ...
Ladybirds are also used. They eat mostly insect eggs, but will also feed on beetle larvae, aphids, scale insects, and young caterpillars. Adults are often collected when in a dormant state in the wild and shipped for use in pest control; however, they may not stay in the location where they are released.
The larvae – caterpillars – have a toughened (sclerotised) head capsule, chewing mouthparts, and a soft body, that may have hair-like or other projections, three pairs of true legs, and up to five pairs of prolegs. Most caterpillars are herbivores, but a few are carnivores (some eat ants, aphids, or other caterpillars) or detritivores. [2]
Fig. 12 larva after final moult. The larva is a little grub-like caterpillar and lives on dry plant and animal debris, where it spins itself a small silken hideout. Recorded foodstuffs include dried fruits, cereals (including bran and flour) and other seeds, potatoes, rotting wood, and even insect specimens, wool and old textiles, and guano. [2 ...
Holotrichia is a genus of beetle in the family Scarabaeidae, which are well known as "chafer beetles" or "white-grubs" for their white larvae that are found under the soil where they feed on the roots of plants.
Chiggers are tiny larvae that bite skin and cause itchy, red bumps. Here are tips and photos to help you determine if your rash is actually chigger bites. ... When trying to identify chigger bites ...
Adult whiteflies are approximately four times the size of the egg, with light yellow bodies and white wings, which is attributed by the secretion of wax across its wings and body. [6] Adult silverleaf whiteflies can reach up to 0.9 millimetres (5 ⁄ 128 in) in length. While feeding or resting the whitefly adult folds its wings tent-like over ...