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74309d7132 The trophi, or mouthparts of a locust, a typical chewing insect: 1 Labrum 2 Mandibles; 3 Maxillae 4 Labium 5 Hypopharynx . In some ants and termites, the mandibles also serve a defensive function (particularly in soldier castes). In carnivorous chewing insects, the mandibles commonly are particularly serrated and knife-like, and often with piercing points. (1977). All but a few adult Lepidoptera lack mandibles (the superfamily known as the mandibulate moths have fully developed mandibles as adults), but also have the remaining mouthparts in the form of an elongated sucking tube, the proboscis. Certainly it is common for significant homology to be conserved, with matching structures formed from matching primordia, and having the same evolutionary origin. The labium is innervated by the sub-esophageal ganglia.. Your browser doesn't accept cookies.
This section deals only with insects that feed by sucking fluids, as a rule without piercing their food first, and without sponging or licking. Some insects do not have chewing mouthparts as adults but do chew solid food when they feed while they still are larvae. Proboscis. Like the maxillary palps, the labial palps aid sensory function in eating. Over 10 million scientific documents at your fingertips Home Impressum Legal Information Contact Us 2016 Springer International Publishing AG. In female mosquitoes, all mouthparts are elongated. Try refreshing the page, or returning to our homepage. Typically the mandibles are the largest and most robust mouthparts of a chewing insect, and it uses them to masticate (cut, tear, crush, chew) food items. The prementum bears a structure called the ligula; this consists of an inner pair of lobes called glossae and a lateral pair called paraglossae.