|
Hemichroa Australis
''Hemichroa australis'' is a species of sawflies in the family Tenthredinidae. Description ''Hemichroa australis'' can reach a length of about . Head and thorax are bright red, while the mesopleuron and the abdomen are shiny black. This sawfly is similar to '' Hemichroa crocea'', which has a bright orange abdomen and legs. Larvae feed on alder (''Alnus'' species) and birch (''Betula A birch is a thin-leaved deciduous hardwood tree of the genus ''Betula'' (), in the family Betulaceae, which also includes alders, hazels, and hornbeams. It is closely related to the beech-oak family Fagaceae. The genus ''Betula'' contains 3 ...'' species). Distribution This species can be found in most of Europe. References External links The sawflies (Symphyta) of Britain and IrelandMattelart Tenthredinidae Insects described in 1823 {{sawfly-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jean Guillaume Audinet-Serville
Jean Guillaume Audinet-Serville (; his name, before the French Revolution, Revolution, included a Nobiliary particle, particle: Audinet de Serville) was a French entomologist, born on 11 November 1775 in Paris. He died on 27 March 1858 in La Ferté-sous-Jouarre. He was introduced to entomology by Madame de Grostête-Tigny who was fascinated, like her husband, by chemistry and insects. Through her, Audinet-Serville met Pierre André Latreille (1762–1833). Latreille worked with him on the ''Dictionnaire des Insectes de l’Encyclopédie méthodique'' ("The Methodical Encyclopedia Dictionary of Insects"). Then, working with Guillaume-Antoine Olivier (1756–1814), he finished the book ''Faune française'' ("French Fauna") in 1830. Audinet-Serville is particularly known for his work on the Orthoptera. He published, ''Revue méthodique de l’ordre des Orthoptères'' ("Methodical Review of the Order of Orthoptera") which appeared in ''Annales des sciences naturelles'' in 1831. Then, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sawflies
Sawflies are the insects of 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. Sawflies vary in leng ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tenthredinidae
Tenthredinidae is the largest family of sawflies, with well over 7,500 species worldwide, divided into 430 genera. Larvae are herbivores and typically feed on the foliage of trees and shrubs, with occasional exceptions that are leaf miners, stem borers, or gall makers. The larvae of externally feeding species resemble small caterpillars. As with all hymenopterans, common sawflies undergo complete metamorphosis. The family has no easily seen diagnostic features, though the combination of five to nine antennal flagellomeres plus a clear separation of the first abdominal tergum from the metapleuron can reliably separate them. These sawflies are often black or brown, and 3 to 20 mm long. Like other sawflies, they lack the slender "wasp-waist", or petiole, between the thorax and abdomen, characteristic of many hymenopterans. The mesosoma and the metasoma are instead broadly joined. The Tenthredinidae are also often somewhat dorsoventrally flattened, which will distinguish them ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hemichroa Crocea
''Hemichroa crocea'', the striped alder sawfly or banded alder sawfly, is a species of sawfly in the family Tenthredinidae. It is probably native in Europe and has been introduced to North America. The larvae feed on the foliage of several species of alder and sometimes on birch, hazel and willow. Description The adult striped alder sawfly has an orange-red thorax, a black abdomen and translucent wings. The larvae resemble caterpillars, and when fully grown are about long. They have black heads and yellowish bodies with a dark brown stripe on each side of the dorsum, and two rows of dark brown markings on each side. Life cycle The first generation of striped alder sawflies are on the wing in late May. The eggs are laid in slits beside the midrib of leaves of the host plant. When these hatch, the caterpillars are gregarious and feed together, in time eating the whole leaf apart from the midrib and veins, and moving on to the next leaf. These larvae reach full size in July and de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alnus
Alders are trees comprising the genus ''Alnus'' in the birch family Betulaceae. The genus comprises about 35 species of monoecious trees and shrubs, a few reaching a large size, distributed throughout the north temperate zone with a few species extending into Central America, as well as the northern and southern Andes. Description With a few exceptions, alders are deciduous, and the leaves are alternate, simple, and serrated. The flowers are catkins with elongate male catkins on the same plant as shorter female catkins, often before leaves appear; they are mainly wind-pollinated, but also visited by bees to a small extent. These trees differ from the birches (''Betula'', another genus in the family) in that the female catkins are woody and do not disintegrate at maturity, opening to release the seeds in a similar manner to many conifer cones. The largest species are red alder (''A. rubra'') on the west coast of North America, and black alder (''A. glutinosa''), native to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Betula
A birch is a thin-leaved deciduous hardwood tree of the genus ''Betula'' (), in the family Betulaceae, which also includes alders, hazels, and hornbeams. It is closely related to the beech-oak family Fagaceae. The genus ''Betula'' contains 30 to 60 known taxa of which 11 are on the IUCN 2011 Red List of Threatened Species. They are a typically rather short-lived pioneer species widespread in the Northern Hemisphere, particularly in northern areas of temperate climates and in boreal climates. Description Birch species are generally small to medium-sized trees or shrubs, mostly of northern temperate and boreal climates. The simple leaves are alternate, singly or doubly serrate, feather-veined, petiolate and stipulate. They often appear in pairs, but these pairs are really borne on spur-like, two-leaved, lateral branchlets. The fruit is a small samara, although the wings may be obscure in some species. They differ from the alders (''Alnus'', another genus in the family) i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
_larvae.jpg "Click for more on -> Sawflies")
