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Hormaphis Cornu
''Hormaphis'' is a genus of witch hazel and palm aphids in the family Aphididae. There are at least three described species in ''Hormaphis'', found mainly in eastern North America. Species These three species belong to the genus ''Hormaphis'': * '' Hormaphis betulae'' (Mordvilko, 1901) * '' Hormaphis cornu'' (Shimer, 1867) * ''Hormaphis hamamelidis The witch-hazel cone gall aphid (''Hormaphis hamamelidis'') is a minuscule insect, a member of the Aphid, aphid superfamily, whose presence on a witch-hazel (''Hamamelis virginiana'') plant is easily recognizable by a conical gall structure. The ...'' (Fitch, 1851) (witch hazel cone gall aphid) References Further reading * * Aphids Taxa named by Carl Robert Osten-Sacken {{sternorrhyncha-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carl Robert Osten-Sacken
Carl Robert Osten-Sacken or Carl-Robert Romanovich, Baron von der Osten-Sacken, Baron Osten Sacken (21 August 1828, – 20 May 1906) was a Russian diplomat and entomologist. He served as the Russian consul general in New York City during the American Civil War, living in the United States from 1856 to 1877. He worked on the taxonomy of flies in general and particularly of the family Tipulidae (crane flies). Early life Carl Robert Osten-Sacken was born on 21 August 1828 in St. Petersburg as the son of Baltic German Baron Reinhold Friedrich von der Osten-Sacken (1791-1864) and his wife, Elisabeth von Engelhardt (1805-1873). Biography He took an interest in insects at the age of eleven through the influence of Joseph N. Schatiloff, a Russian coleopterist. In 1849 he joined the Imperial Foreign Office and while still in Russia he published his first entomological papers, including an account of the species found in the suburbs of St. Petersburg. In 1856, he was sent to Wash ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hormaphis Hamamelidis Winged Adult
''Hormaphis'' is a genus of witch hazel and palm aphids in the family Aphididae. There are at least three described species in ''Hormaphis'', found mainly in eastern North America. Species These three species belong to the genus ''Hormaphis'': * '' Hormaphis betulae'' (Mordvilko, 1901) * ''Hormaphis cornu'' (Shimer, 1867) * ''Hormaphis hamamelidis The witch-hazel cone gall aphid (''Hormaphis hamamelidis'') is a minuscule insect, a member of the Aphid, aphid superfamily, whose presence on a witch-hazel (''Hamamelis virginiana'') plant is easily recognizable by a conical gall structure. The ...'' (Fitch, 1851) (witch hazel cone gall aphid) References Further reading * * Aphids Taxa named by Carl Robert Osten-Sacken {{sternorrhyncha-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aphididae
The Aphididae are a very large insect family in the aphid superfamily ( Aphidoidea), of the order Hemiptera. These insects suck the sap from plant leaves. Several thousand species are placed in this family, many of which are considered plant/crop pests. They are the family of insects containing most plant virus vectors (around 200 known) with the green peach aphid ('' Myzus persicae'') being one of the most prevalent and indiscriminate carriers. Evolution Aphids originated in the late Cretaceous about (Mya), but the Aphidinae which comprises about half of the 4700 described species and genera of aphids alive today come from their most recent radiation which occurred in the late Tertiary less than 10 Mya.Von Dohlen CD, Moran NA (2000) Molecular data support a rapid radiation of aphids in the Cretaceous and multiple origins of host alternation. Biol J Linnean Soc 71: 689–717Von Dohlen CD, Rowe CA, Heie OE (2006) A test of morphological hypotheses for tribal and subtribal relat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hormaphis Betulae
''Hormaphis'' is a genus of witch hazel and palm aphids in the family Aphididae. There are at least three described species in ''Hormaphis'', found mainly in eastern North America. Species These three species belong to the genus ''Hormaphis'': * '' Hormaphis betulae'' (Mordvilko, 1901) * ''Hormaphis cornu'' (Shimer, 1867) * ''Hormaphis hamamelidis The witch-hazel cone gall aphid (''Hormaphis hamamelidis'') is a minuscule insect, a member of the Aphid, aphid superfamily, whose presence on a witch-hazel (''Hamamelis virginiana'') plant is easily recognizable by a conical gall structure. The ...'' (Fitch, 1851) (witch hazel cone gall aphid) References Further reading * * Aphids Taxa named by Carl Robert Osten-Sacken {{sternorrhyncha-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hormaphis Hamamelidis
The witch-hazel cone gall aphid (''Hormaphis hamamelidis'') is a minuscule insect, a member of the Aphid, aphid superfamily, whose presence on a witch-hazel (''Hamamelis virginiana'') plant is easily recognizable by a conical gall structure. The gall is green at first, then turns bright red. This gall, rich in nutrients, provides both food and shelter for the female aphid. ''H. hamamelidis'' have three generations per year, each with a different part in the life cycle. At the start of spring, females or ''stem mothers'' crawl to witch-hazel leaf buds. As the leaf grows, the aphid injects it with a substance, possibly an enzyme or hormone, that causes that the galls to form around her. Once inside her gall, the stem mother reproduces Parthenogenesis, parthenogenically and fills the gall with 50–70 female offspring. The second generation develops wings and disperses, repeating the process. The third generation includes both males and females. Towards the end of summer, the thi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aphids
Aphids are small sap-sucking insects and members of the superfamily Aphidoidea. Common names include greenfly and blackfly, although individuals within a species can vary widely in color. The group includes the fluffy white woolly aphids. A typical life cycle involves flightless females giving live birth to female nymphs—who may also be already pregnant, an adaptation scientists call telescoping generations—without the involvement of males. Maturing rapidly, females breed profusely so that the number of these insects multiplies quickly. Winged females may develop later in the season, allowing the insects to colonize new plants. In temperate regions, a phase of sexual reproduction occurs in the autumn, with the insects often overwintering as eggs. The life cycle of some species involves an alternation between two species of host plants, for example between an annual crop and a woody plant. Some species feed on only one type of plant, while others are generalists, coloni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
