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The development of insect mouthparts from the primitive chewing mouthparts of a grasshopper in the centre (A), to the lapping type (B) of a bee, the siphoning type (C) of a butterfly and the sucking type (D) of a female mosquito. Legend: a, antennae; c, compound eye; lb, labium; lr, labrum; md, mandibles; mx, maxillae; hp hypopharynx.
Gongylonema pulchrum was first named and presented with its own species by Molin in 1857. The first reported case was in 1850 by Dr. Joseph Leidy, when he identified a worm "obtained from the mouth of a child" from the Philadelphia Academy (however, an earlier case may have been treated in patient Elizabeth Livingstone in the seventeenth century [2]).
The fore gut of some species extends the whole length of the insect and can be used to store prey for digestion later. This may be advantageous in an insect that feeds intermittently. [48] Chinese mantises live longer, grow faster, and produce more young when they are able to eat pollen. [49]
Nephila sp. eating a conspecific. Females exercise mate choice, rejecting unwanted and unfit males by cannibalizing them. [25] Mate choice often correlates size with fitness level; smaller males tend to display a low level of fitness; smaller males are therefore eaten more often because of their undesirable traits. [25]
The development of insect mouthparts from the primitive chewing mouthparts of a grasshopper in the centre (A), to the lapping type (B) and the siphoning type (C). Legend: a - antennae c - compound eye lb -labium lr - labrum md - mandibles mx - maxillae. The insect mouthparts consist of the maxilla, labium, and in some species the mandibles.
The members of the Triatominae / t r aɪ. ə ˈ t ɒ m ɪ n iː /, a subfamily of the Reduviidae, are also known as conenose bugs, kissing bugs (so-called from their habit of feeding from around the mouths of people), [1] or vampire bugs. Other local names for them used in the Americas include barbeiros, vinchucas, pitos, chipos and chinches.
Filial cannibalism occurs when an adult individual of a species consumes all or part of the young of its own species or immediate offspring.Filial cannibalism occurs in many species ranging from mammals to insects, and is especially prevalent in various types of fish species with males that engage in egg guardianship. [1]
Insect mandibles are a pair of appendages near the insect's mouth, and the most anterior of the three pairs of oral appendages (the labrum is more anterior, but is a single fused structure). Their function is typically to grasp, crush, or cut the insect's food, or to defend against predators or rivals.