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Nut Weevil
The beetle subfamily Curculioninae is part of the weevil family Curculionidae. It contains over 23,500 described species in 2,200 genera, and is therefore the largest weevil subfamily. Given that the beetle order (Coleoptera) contains about one-quarter of all known organisms, the Curculioninae represent one of the – if not ''the'' – most successful radiations of terrestrial Metazoa. Many weevils of this group are commonly known as flower weevils or acorn and nut weevils, after a food commonly eaten by Curculioninae larvae and imagines — the reproductive organs of plants. Systematics This large subfamily is divided into around 30 tribes. Delimitation of the Curculioninae is fairly robust considering its enormous size; there is some dispute, however, in their exact boundary with the Molytinae. The Phrynixini and Trypetidini are also included in the Curculioninae by some authors, but more often they are considered Molytinae; conversely, the Itini are usual ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tychius Sp
''Tychius'' is a genus of leguminous seed weevils in the family Curculionidae. There are at least 630 described species in ''Tychius''. See also * List of Tychius species This is a list of 631 species in the genus '' Tychius''. ''Tychius'' species References {{Reflist * ... References Further reading * * * * * * External links * Curculioninae {{Curculioninae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tribe (biology)
In biology, a tribe is a taxonomic rank above genus, but below family and subfamily. It is sometimes subdivided into subtribes. By convention, all taxonomic ranks from genus upwards are capitalized, including both tribe and subtribe. In zoology, the standard ending for the name of a zoological tribe is "-ini". Examples include the tribes Caprini (goat-antelopes), Hominini (hominins), Bombini (bumblebees), and Thunnini (tunas). The tribe Hominini is divided into subtribes by some scientists; subtribe Hominina then comprises "humans". The standard ending for the name of a zoological subtribe is "-ina". In botany, the standard ending for the name of a botanical tribe is "-eae". Examples include the tribes Acalypheae and Hyacintheae. The tribe Hyacintheae is divided into subtribes, including the subtribe Massoniinae. The standard ending for the name of a botanical subtribe is "-inae". In bacteriology, the form of tribe names is as in botany, e.g., Pseudomonadeae, based on the ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mandible (arthropod)
250px, The mandibles of a bull ant The mandible (from la, mandibula or mandĭbŭ-lum, a jaw) of an arthropod is a pair of mouthparts used either for biting or cutting and holding food. Mandibles are often simply called jaws. Mandibles are present in the extant subphyla Myriapoda (millipedes and others), Crustacea and Hexapoda (insects etc.). These groups make up the clade Mandibulata, which is currently believed to be the sister group to the rest of arthropods, the clade Arachnomorpha (Chelicerata and Trilobita). Unlike the chelicerae of arachnids, mandibles can often be used to chew food. Mandibulates also differ by having antennae, and also by having three distinct body regions: head, thorax and abdomen. (The cephalothorax (or prosoma) of chelicerates is a fusion of head and thorax.) Insects Insect mandibles are as diverse in form as their food. For instance, grasshoppers and many other plant-eating insects have sharp-edged mandibles that move side to side. Most ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arthropod Leg
The arthropod leg is a form of jointed appendage of arthropods, usually used for walking. Many of the terms used for arthropod leg segments (called podomeres) are of Latin origin, and may be confused with terms for bones: ''coxa'' (meaning hip, plural ''coxae''), ''trochanter'', ''femur'' (plural ''femora''), ''tibia'' (plural ''tibiae''), ''tarsus'' (plural ''tarsi''), ''ischium'' (plural ''ischia''), ''metatarsus'', ''carpus'', ''dactylus'' (meaning finger), ''patella'' (plural ''patellae''). Homologies of leg segments between groups are difficult to prove and are the source of much argument. Some authors posit up to eleven segments per leg for the most recent common ancestor of extant arthropods but modern arthropods have eight or fewer. It has been argued that the ancestral leg need not have been so complex, and that other events, such as successive loss of function of a ''Hox''-gene, could result in parallel gains of leg segments. In arthropods, each of the leg segments ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ceutorhynchini
Ceutorhynchini is a true weevil tribe in the subfamily Baridinae. Genera '' Aiphonsinus'' - '' Allosirocalus'' - ''Amalorrhynchus'' - ''Amalus'' - '' Amicroplontus'' - '' Amurocladus'' - '' Angarocladus'' - '' Barioxyonyx'' - '' Bohemanius'' - '' Boragosirocalus'' - '' Brevicoeliodes'' - ''Calosirus'' - '' Cardipennis'' - '' Ceutorhynchoides'' - ''Ceutorhynchus'' - ''Coeliastes'' - ''Coeliodes'' - '' Coeliodinus'' - '' Conocoeliodes'' - '' Datonychidius'' - ''Datonychus'' - '' Dieckmannius'' - '' Drupenatus'' - '' Ectamnogaster'' - '' Eremonyx'' - '' Ericomicrelus'' - '' Ethelcus'' - '' Eucoeliodes'' - '' Euoxyonyx'' - '' Exocoeliodes'' - '' Fossoronyx'' - '' Glocianus'' - '' Gobicladus'' - '' Hadroplontus'' - '' Hainokisaruzo'' - '' Hemioxyonyx'' - '' Heorhynchus'' - '' Hesperorrhynchus'' - '' Indicoplontus'' - '' Indozacladus'' - '' Isorhynchus'' - '' Macrosquamonyx'' - '' Mesoxyonyx'' - '' Micrelus'' - ''Microplontus'' - ''Mogulones'' - '' Mogulonoides'' - '' Nedyus'' - '' Ne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pygidium
The pygidium (plural pygidia) is the posterior body part or shield of crustaceans and some other arthropods, such as insects and the extinct trilobites. In groups other than insects, it contains the anus and, in females, the ovipositor. It is composed of fused body segments, sometimes with a tail, and separated from thoracic segments by an articulation.Shultz, J.W. (1990). Evolutionary Morphology And Phylogeny of Arachnida. Cladistics 6: 1–38. Chelicerates In arachnids, the pygidium is formed by reduction of the last three opisthosomal segments to rings where there is no distinction between tergites and sternites. A pygidium is present in Palpigradi, Amblypygi, Thelyphonida, Schizomida, Ricinulei and in the extinct order Trigonotarbida. It is also present in early fossil representatives of horseshoe crabs. Trilobites In trilobites, the pygidium can range from extremely small (much smaller than the head, or cephalon) to larger than the cephalon. They can be smooth, as in order ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ceutorhynchinae
Ceutorhynchinae is a subfamily of minute seed weevils in the family of beetles known as Curculionidae. There are at least 150 genera and more than 1000 described species in Ceutorhynchinae worldwide. Genera These 150 genera belong to the subfamily Ceutorhynchinae: * '' Acallodes'' LeConte, 1876 * '' Acanthoscelidius'' Hustache, 1930 * '' Allosirocalus'' Colonnelli, 1983 * ''Amalorrhynchus'' Reitter, 1913 * ''Amalus'' Schönherr, 1825 * '' Amicroplontus'' * '' Amurocladus'' * '' Angarocladus'' * '' Anthypurinus'' * '' Aoxyonyx'' * '' Aphytobius'' * '' Asperauleutes'' * '' Asperosoma'' Korotyaev, 1999 * '' Augustinus'' * '' Auleutes'' Dietz, 1896 * '' Barioxyonyx'' * '' Belonnotus'' * '' Bohemanius'' * '' Boragosirocalus'' * '' Brachiodontus'' * '' Brevicoeliodes'' * ''Calosirus'' * '' Cardipennis'' * '' Ceutorhynchoides'' * ''Ceutorhynchus'' Germar, 1824 * '' Cnemogonus'' LeConte, 1876 * ''Coeliastes'' * ''Coeliodes'' * '' Coeliodinus'' * '' Coeliosomus'' * '' Conocoeliodes'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cryptorhynchinae
Cryptorhynchinae is a large subfamily of weevils ( Curculionidae), with some 6000 species. They are found in most zoogeographic regions although they are most diverse in the Neotropics, Australia and Oceania. They are distinguished by having their rostrum (snout) backwardly directed between their fore coxae in repose, and fitting within a protective channel that usually ends in a cup-like structure on the mesoventrite (ventral mid thoracic segment). The ends of the tibiae also bear an uncus (small hook-like extensions), a character they share with many other groups of Curculionidae that use woody plants for oviposition. They are merged into the Molytinae in some treatments, but a recent molecular study shows that Cryptorhynchinae sensu stricto are monophyletic and best kept as an independent subfamily. Some species of Cryptorhynchinae are considered agricultural pests, such as the mango seed weevil '' Sternochetus mangiferae'', but the great majority of species live in primar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
