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Cephoidea
Cephoidea is a small superfamily within the Symphyta, commonly referred to as stem sawflies, containing some 100 species in 10 genera in the living family, Cephidae, plus another 17 genera in the extinct family Sepulcidae. They first appeared around 212 million years ago in the Norian Age, and are diurnal. Most species occur in the Northern Hemisphere, especially in Eurasia. The larvae are stem borers in various plants, especially grasses, but sometimes other herbaceous plants, shrubs, or trees. A few are pests of cereal grains (e.g. '' Cephus cinctus'', which attacks wheat). They are exceptionally slender for symphytans, often resembling other types of wasps, and they are the only Symphyta which lack cenchri. They are sometimes postulated to be the sister taxon to the Apocrita Apocrita is a suborder of insects in the order Hymenoptera. It includes wasps, bees, and ants, and consists of many families. It contains the most advanced hymenopterans and is distinguished from Sy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sawflies
Sawflies are wasp-like insects that are in the suborder Symphyta within the order Hymenoptera, alongside ants, bees, and wasps. The common name comes from the saw-like appearance of the ovipositor, which the females use to cut into the plants where they lay their eggs. The name is associated especially with the Tenthredinoidea, by far the largest superfamily in the suborder, with about 7,000 known species; in the entire suborder, there are 8,000 described species in more than 800 genera. Symphyta is paraphyletic, consisting of several basal groups within the order Hymenoptera, each one rooted inside the previous group, ending with the Apocrita which are not sawflies. The primary distinction between sawflies and the Apocrita – the ants, bees, and wasps – is that the adults lack a "wasp waist", and instead have a broad connection between the abdomen and the thorax. Some sawflies are Batesian mimics of wasps and bees, and the ovipositor can be mistaken for a stinger. S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Symphyta
Sawflies are wasp-like insects that are in the suborder Symphyta within the order Hymenoptera, alongside ants, bees, and wasps. The common name comes from the saw-like appearance of the ovipositor, which the females use to cut into the plants where they lay their eggs. The name is associated especially with the Tenthredinoidea, by far the largest Taxonomic rank#Ranks in zoology, superfamily in the suborder, with about 7,000 known species; in the entire suborder, there are 8,000 described species in more than 800 genera. Symphyta is paraphyly, paraphyletic, consisting of several Basal (phylogenetics), basal groups within the order Hymenoptera, each one rooted inside the previous group, ending with the Apocrita which are not sawflies. The primary distinction between sawflies and the Apocrita – the ants, bees, and wasps – is that the adults lack a "wasp waist", and instead have a broad connection between the abdomen and the Thorax (insect anatomy), thorax. Some sawflies are Ba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hymenoptera Superfamilies
Hymenoptera is a large order of insects, comprising the sawflies, wasps, bees, and ants. Over 150,000 living species of Hymenoptera have been described, in addition to over 2,000 extinct ones. Many of the species are parasitic. Females typically have a special ovipositor for inserting eggs into hosts or places that are otherwise inaccessible. This ovipositor is often modified into a stinger. The young develop through holometabolism (complete metamorphosis)—that is, they have a wormlike larval stage and an inactive pupal stage before they reach adulthood. Etymology The name Hymenoptera refers to the wings of the insects, but the original derivation is ambiguous. All references agree that the derivation involves the Ancient Greek πτερόν (''pteron'') for wing. The Ancient Greek ὑμήν (''hymen'') for membrane provides a plausible etymology for the term because species in this order have membranous wings. However, a key characteristic of this order is that the hindwings ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sepulcidae
Sepulcidae is an extinct family of stem sawflies in the order Hymenoptera. The family is known primarily from late Mesozoic fossils found in 1968 in Transbaikalia. The insects were distant relatives of modern sawflies and are part of the living superfamily Cephoidea. The genus '' Sepulca'' was identified by Alexandr Pavlovich Rasnitsyn. It was named by his colleague and a science-fiction author Kirill Eskov after fictional entities called ''sepulki'', found in Stanisław Lem's '' The Star Diaries'' and '' Observation on the Spot''. The relation to Lem's ''sepulki'' is understandable in both Polish and Russian, but their English translation obscures their association with ancient insects as they are translated as ''Scrupts'' in English editions of Lem's novels. Genera These 17 genera belong to the family Sepulcidae: * Subfamily Sepulcinae Rasnitsyn, 1968 ** † '' Sepulca'' Rasnitsyn, 1968 ** † '' Sepulenia'' Rasnitsyn, 1968 * Subfamily Parapamphiliinae Rasnitsyn, 1968 ** † ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calameuta Filiformis (Cephidae Sp
''Calameuta'' is a genus of insects belonging to the family Cephidae. The genus was first described by Friedrich Wilhelm Konow Friedrich Wilhelm Konow (11 July 1842, in Mechow – 18 March 1908, in Teschendorf) was a German priest and amateur entomologist who specialised in Hymenoptera especially Tenthredinidae. Konow was born in Mechow where he attended the school w ... in 1896. The species of this genus are found in Europe and North America. Species: * '' Calameuta antigae'' (Konow, 1894) * '' Calameuta aurea'' (Benson, 1935) * '' Calameuta clavata'' * '' Calameuta festiva'' Benson, 1954 * '' Calameuta filiformis'' (Eversmann, 1847) * '' Calameuta filum'' (Gussakovskij, 1935) * '' Calameuta grombczewskii'' (Jakowlew, 1891) * '' Calameuta haemorrhoidalis'' (Fabricius, 1781) * '' Calameuta idolon'' (Rossi, 1794) * '' Calameuta middlekauffi'' * '' Calameuta moreana'' (Pic, 1916) * '' Calameuta pallipes'' (Klug, 1803) * '' Calameuta punctata'' (Klug, 1803) * '' Calameuta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orussidae
The Orussidae or the parasitic wood wasps represent a small family of sawflies ("Symphyta"). Currently, about 93 extant and four fossil species are known. They take a key position in phylogenetic analyses of Hymenoptera, because they form the sister taxon of the megadiverse apocritan wasps, and the common ancestor of Orussidae + Apocrita evolved parasitism for the first time in course of the evolution of the Hymenoptera. They are also the only sawflies with carnivorous larvae. Description Adults The fully winged sawflies are 2−23 mm long. They are predominantly black but species of ''Chalinus'', ''Mocsarya'' and ''Orussobaius'' are more or less metallic. Some species have a red thorax or abdomen and conspicuous white or golden pilosity. Many ''Orussus'' species bear white spots on the legs. The antennae of males are composed of 11, those of females of 10 articles. The modified distal antennal articles of females (article 9 enlarged, article 10 very small) are involved in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wasp
A wasp is any insect of the narrow-waisted suborder Apocrita of the order Hymenoptera which is neither a bee nor an ant; this excludes the broad-waisted sawflies (Symphyta), which look somewhat like wasps, but are in a separate suborder. The wasps do not constitute a clade, a complete natural group with a single ancestor, as bees and ants are deeply nested within the wasps, having evolved from wasp ancestors. Wasps that are members of the clade Aculeata can sting their prey. The most commonly known wasps, such as yellowjackets and hornets, are in the family Vespidae and are eusocial, living together in a nest with an egg-laying queen and non-reproducing workers. Eusociality is favoured by the unusual haplodiploid system of sex determination in Hymenoptera, as it makes sisters exceptionally closely related to each other. However, the majority of wasp species are solitary, with each adult female living and breeding independently. Females typically have an oviposit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apocrita
Apocrita is a suborder of insects in the order Hymenoptera. It includes wasps, bees, and ants, and consists of many families. It contains the most advanced hymenopterans and is distinguished from Symphyta by the narrow "waist" ( petiole) formed between the first two segments of the actual abdomen; the first abdominal segment is fused to the thorax, and is called the propodeum. Therefore, it is general practice, when discussing the body of an apocritan in a technical sense, to refer to the mesosoma and metasoma (or gaster) rather than the "thorax" and "abdomen", respectively. The evolution of a constricted waist was an important adaption for the parasitoid lifestyle of the ancestral apocritan, allowing more maneuverability of the female's ovipositor. The ovipositor either extends freely or is retracted, and may be developed into a stinger for both defense and paralyzing prey. Larvae are legless and blind, and either feed inside a host (plant or animal) or in a nest cell prov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sister Taxon
In phylogenetics, a sister group or sister taxon, also called an adelphotaxon, comprises the closest relative(s) of another given unit in an evolutionary tree. Definition The expression is most easily illustrated by a cladogram: Taxon A and taxon B are sister groups to each other. Taxa A and B, together with any other extant or extinct descendants of their most recent common ancestor (MRCA), form a monophyletic group, the clade AB. Clade AB and taxon C are also sister groups. Taxa A, B, and C, together with all other descendants of their MRCA form the clade ABC. The whole clade ABC is itself a subtree of a larger tree which offers yet more sister group relationships, both among the leaves and among larger, more deeply rooted clades. The tree structure shown connects through its root to the rest of the universal tree of life. In cladistic standards, taxa A, B, and C may represent specimens, species, genera, or any other taxonomic units. If A and B are at the same taxonomic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cenchrus (insect Anatomy)
The cenchrus (plural cenchri) is a specialized anatomical structure in the insect group known as sawflies. The cenchri are small blister-like lobes on the metanotum The metathorax is the posterior of the three segments in the thorax of an insect, and bears the third pair of legs. Its principal sclerites ( exoskeletal plates) are the metanotum (dorsal), the metasternum ( ventral), and the metapleuron (late ... of these insects, just posterior to the mesothoracic scutellum, shaped and positioned in such a way as to latch onto the base of the front wings when they are folded at rest. There are corresponding small patches on the wings where the membrane is roughened, to increase the friction against the dorsal surface of the cenchri. This is a unique mechanism among the insects. References Sawflies Insect anatomy {{insect-anatomy-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hartigia Linearis
''Phylloecus'' (formerly ''Hartigia'') is a genus of sawflies belonging to the family Cephidae. The genus was first described by Edward Newman in 1838. In 2014, the genus ''Hartigia'' Schiødte, 1839 was reclassified as a junior synonym of ''Phylloecus''. Species The following species are included in the genus: * '' Phylloecus agilis'' (F. Smith, 1874) * '' Phylloecus albotegularis'' (Wei & Nie, 1996) * '' Phylloecus algiricus'' André, 1881 * '' Phylloecus bicinctus'' Provancher, 1875 * '' Phylloecus cheni'' (Wei & Nie, 1999) * '' Phylloecus coreanus'' (Takeuchi, 1938) * '' Phylloecus cowichanus'' (Ries, 1937) * '' Phylloecus elevatus'' (Maa, 1944) * '' Phylloecus epigonus'' (Zhelochovtsev, 1961) * '' Phylloecus etorofensis'' (Takeuchi, 1955) * '' Phylloecus fasciatus'' (Cresson, 1880) * '' Phylloecus faunus'' Newman, 1838 * '' Phylloecus kamijoi'' (Shinohara, 1999) * ''Phylloecus linearis'' (Schrank, 1781) * '' Phylloecus mexicanus'' (Guerin, 844 * '' Phylloecus minutus'' ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wheat
Wheat is a group of wild and crop domestication, domesticated Poaceae, grasses of the genus ''Triticum'' (). They are Agriculture, cultivated for their cereal grains, which are staple foods around the world. Well-known Taxonomy of wheat, wheat species and hybrids include the most widely grown common wheat (''T. aestivum''), spelt, durum, emmer, einkorn, and Khorasan wheat, Khorasan or Kamut. The archaeological record suggests that wheat was first cultivated in the regions of the Fertile Crescent around 9600 BC. Wheat is grown on a larger area of land than any other food crop ( in 2021). World trade in wheat is greater than that of all other crops combined. In 2021, world wheat production was , making it the second most-produced cereal after maize (known as corn in North America and Australia; wheat is often called corn in countries including Britain). Since 1960, world production of wheat and other grain crops has tripled and is expected to grow further through the middle of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
