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Most weevils have the ability to fly (including pest species such as the rice weevil), [2] [3] though a significant number are flightless, such as the genus Otiorhynchus, and others can jump. One species of weevil, Austroplatypus incompertus, exhibits eusociality, one of the few insects outside the Hymenoptera and the Isoptera to do so ...
The weevils are hard to detect and usually all of the grain in an infested storage facility must be destroyed. Many methods have been attempted to get rid of the wheat weevil, such as pesticides, different methods of masking the odor of the grain with unpleasant scents, and some have even gone as far as introducing predator organisms.
The adults lack functional wings and do not fly. There are no males, and reproduction is asexual. Eggs are laid at random in the soil in summer around food plants, and, on hatching, the larvae feed on the roots until late fall, when they hibernate. Strawberry root weevils reproduce through a process called parthenogenesis. This means that ...
Weevils also are known to infest oats, rice, corn, corn meal, sorghum, and cereal, so you might want to apply the same practice you do to your flour as those items as well.
Female weevils have the ability to reproduce parthenogenetically [2] with fertilisation of eggs required to produce males, though no males have been observed. [3] This form of parthenogenesis is known as thelytoky. Grubs grow up to 1 cm in length, have a slightly curved, legless body and are creamy white in colour with a tan-brown head.
Curculio glandium eggs are deposited in acorns by the adult weevil chewing channels into the fruit. The eggs are then released using an ovipositor, a long, narrow organ featured in female weevils. [2] These do not reach the acorn's embryo and are healed by the plant, sealing the holes and protecting the eggs from parasites.
New adults ready to reproduce are attracted to freshly cut stumps of conifers. Eggs are deposited singly (one or two per day) under the ground into stumps, thick roots or in the soil in their vicinity. Large pine weevils can locate spots on the ground to dig into in a great precision using olfactory cues.
Reproduction involves copulation between the months of September to March, generally on male flowers. [3] This is followed by burying of single eggs in the soil underneath the host plant from September to April or May. Larvae develop by feeding on the root parenchyma, and pupate into adult weevils in chambers up to 600 mm below the soil surface ...