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Eriophyes Laevis
''Eriophyes laevis '' is a gall mite which makes small, pimple-like galls on the leaves of alder (''Alnus'' species). The mite was first described by the Austrian zoologist, Alfred Nalepa in 1889 and is found in Europe and North America. Description of the gall ''Eriophyes laevis '' makes small, more or less, pimple-like galls, up to 2 mm in diameter. They can cover most of the leaf which can restrict growth. Each gall has a narrow opening on the underside of the leaf. The galls are green at first but usually become purple or red later in the year. The mites leave the gall in autumn and spend the winter in empty alder cones or bark crevices. Species of tree galled include common alder (''Alnus glutinosa''), grey alder ('' Alnus incana'') & subsp. ''rugosa'' + ''tenuifolia'', x ''pubescens'', red alder ('' Alnus rubra'') and green alder ('' Alnus alnobetula''). Leaves are occasionally infected by both this species and Eriophyes inangulis ''Eriophyes inangulis'' is a mite ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alfred Nalepa
Alfred Nalepa (19 December 1856, in Werschetz – 11 December 1929, in Baden bei Wien) was an Austrian zoologist specializing in the field of acarology. He studied natural sciences at the University of Vienna, and from 1886 was associated with the ''Lehrerbildungsanstalt'' in Linz. In 1892 he returned to Vienna, where he was appointed professor of natural history at the ''Elisabethgymnasium''. He described many species in the field of acarology, and was the taxonomic authority of the gall mite family, Eriophyidae. Principal works * ''Beiträge zur Systematik der Phytopten'', 1889 - Contribution to the systematics Biological systematics is the study of the diversification of living forms, both past and present, and the relationships among living things through time. Relationships are visualized as evolutionary trees (synonyms: cladograms, phylogenetic tre ... of Phytoptidae. * ''Beiträge zur Kenntniss der Phyllocoptiden'', 1894 - Contribution to the knowledge of '' Phyll ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eriophyes Inangulis
''Eriophyes inangulis'' is a mite that forms the alder vein angle gall. It develops in a chemically induced gall; a sub-spherical distortion rising up from the upper surface of the leaves of alder trees ''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 whe ...'' along the midrib. Synonyms are ''Eriophyes laevis inangulis'', ''Phytoptus laevis'', and ''Cephaloneon pustulatum''. The physical appearance The gall's appearance on the upper surface is sub-spherical, smooth and may vary in colour from pale yellow-green to deep red. The adult mite lives on alder tree sap, sucked from the cell tissues. The galls cluster along the midrib in the angle of the veins. The wide opening and interior on the lower epidermis and is lined with large numbers of small hairs. Galls may be so ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arachnids Of North America
Arachnida () is a class of joint-legged invertebrate animals (arthropods), in the subphylum Chelicerata. Arachnida includes, among others, spiders, scorpions, ticks, mites, pseudoscorpions, harvestmen, camel spiders, whip spiders and vinegaroons. Almost all adult arachnids have eight legs, although the front pair of legs in some species has converted to a sensory function, while in other species, different appendages can grow large enough to take on the appearance of extra pairs of legs. The term is derived from the Greek word (''aráchnē'', 'spider'), from the myth of the hubristic human weaver Arachne, who was turned into a spider. Almost all extant arachnids are terrestrial, living mainly on land. However, some inhabit freshwater environments and, with the exception of the pelagic zone, marine environments as well. They comprise over 100,000 named species, of which 47,000 are species of spiders. Morphology Almost all adult arachnids have eight legs, unlike adult insects ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arachnids Of Europe
Arachnida () is a class of joint-legged invertebrate animals (arthropods), in the subphylum Chelicerata. Arachnida includes, among others, spiders, scorpions, ticks, mites, pseudoscorpions, harvestmen, camel spiders, whip spiders and vinegaroons. Almost all adult arachnids have eight legs, although the front pair of legs in some species has converted to a sensory function, while in other species, different appendages can grow large enough to take on the appearance of extra pairs of legs. The term is derived from the Greek word (''aráchnē'', 'spider'), from the myth of the hubristic human weaver Arachne, who was turned into a spider. Almost all extant arachnids are terrestrial, living mainly on land. However, some inhabit freshwater environments and, with the exception of the pelagic zone, marine environments as well. They comprise over 100,000 named species, of which 47,000 are species of spiders. Morphology Almost all adult arachnids have eight legs, unlike adult insects ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animals Described In 1889
Animals are multicellular, eukaryotic organisms in the biological kingdom Animalia. With few exceptions, animals consume organic material, breathe oxygen, are able to move, can reproduce sexually, and go through an ontogenetic stage in which their body consists of a hollow sphere of cells, the blastula, during embryonic development. Over 1.5 million living animal species have been described—of which around 1 million are insects—but it has been estimated there are over 7 million animal species in total. Animals range in length from to . They have complex interactions with each other and their environments, forming intricate food webs. The scientific study of animals is known as zoology. Most living animal species are in Bilateria, a clade whose members have a bilaterally symmetric body plan. The Bilateria include the protostomes, containing animals such as nematodes, arthropods, flatworms, annelids and molluscs, and the deuterostomes, containing the echinoderms ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
