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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] |
Étienne Louis Geoffroy
Étienne Louis Geoffroy (October 12, 1725 – August 12, 1810) was a French entomologist and pharmacist. He was born in Paris and died in Soissons. He followed the binomial nomenclature of Carl Linnaeus, Carl von Linné and devoted himself mainly to beetles. Geoffroy was the author of ''Histoire abrégée des Insectes qui se trouvent aux environs de Paris''. Paris : Durand Vol. 1 8 + 523 pp. 10 pls (1762) and co-author with Antoine François, comte de Fourcroy, Antoine François of ''Entomologia Parisiensis, sive, Catalogus insectorum quae in agro Parisiensi reperiuntur ...'' (1785). References * Jean Gouillard (2004). ''Histoire des entomologistes français, 1750-1950. Édition entièrement revue et augmentée.'' Boubée (Paris): p. 287 * Jean Lhoste (1987). ''Les Entomologistes français. 1750-1950. INRA Éditions: p. 351 {{DEFAULTSORT:Geoffroy, Etienne Louis French entomologists 1725 births 1810 deaths ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alnus Glutinosa
''Alnus glutinosa'', the common alder, black alder, European alder, European black alder, or just alder, is a species of tree in the family Betulaceae, native to most of Europe, southwest Asia and northern Africa. It thrives in wet locations where its association with the bacterium ''Frankia alni'' enables it to grow in poor quality soils. It is a medium-sized, short-lived tree growing to a height of up to 30 metres (98 feet). It has short-stalked rounded leaves and separate male and female flowers in the form of catkins. The small, rounded fruits are cone-like and the seeds are dispersed by wind and water. The common alder provides food and shelter for wildlife, with a number of insects, lichens and fungi being completely dependent on the tree. It is a pioneer species, colonising vacant land and forming mixed forests as other trees appear in its wake. Eventually common alder dies out of woodlands because the seedlings need more light than is available on the forest floor. I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Insects Of Europe
Insects (from Latin ') are pancrustacean hexapod invertebrates of the class Insecta. They are the largest group within the arthropod phylum. Insects have a chitinous exoskeleton, a three-part body ( head, thorax and abdomen), three pairs of jointed legs, compound eyes and one pair of antennae. Their blood is not totally contained in vessels; some circulates in an open cavity known as the haemocoel. Insects are the most diverse group of animals; they include more than a million described species and represent more than half of all known living organisms. The total number of extant species is estimated at between six and ten million; In: potentially over 90% of the animal life forms on Earth are insects. Insects may be found in nearly all environments, although only a small number of species reside in the oceans, which are dominated by another arthropod group, crustaceans, which recent research has indicated insects are nested within. Nearly all insects hatch from eggs. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Insects Described In 1785
Insects (from Latin ') are pancrustacean hexapod invertebrates of the class Insecta. They are the largest group within the arthropod phylum. Insects have a chitinous exoskeleton, a three-part body (head, thorax and abdomen), three pairs of jointed legs, compound eyes and one pair of antennae. Their blood is not totally contained in vessels; some circulates in an open cavity known as the haemocoel. Insects are the most diverse group of animals; they include more than a million described species and represent more than half of all known living organisms. The total number of extant species is estimated at between six and ten million; In: potentially over 90% of the animal life forms on Earth are insects. Insects may be found in nearly all environments, although only a small number of species reside in the oceans, which are dominated by another arthropod group, crustaceans, which recent research has indicated insects are nested within. Nearly all insects hatch from eggs. Insect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
