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Trombiculidae
Trombiculidae (); commonly referred to in North America as chiggers and in Britain as harvest mites, but also known as berry bugs, bush-mites, red bugs or scrub-itch mites, are a family of mites. Chiggers are often confused with Tunga penetrans, jiggers – a type of flea. Several species of Trombiculidae in their larva stage bite their animal or human host and by embedding their mouthparts into the skin cause "intense irritation" or "a wheal response, wheal, usually with severe itching and dermatitis". Trombiculidae live in forests and grasslands and are also found in the vegetation of low, damp areas such as woodlands, berry bushes, orchards, along lakes and streams, and even in drier places where vegetation is low, such as lawns, golf courses, and parks. They are most numerous in early summer when grass, weeds, and other vegetation are heaviest. In their larval stage, they attach to various animals, including humans, and feed on skin, often causing itching. These relatives of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leptotrombidium
''Leptotrombidium'' () is a genus of mites in the family Trombiculidae, that are able to infect humans with scrub typhus (''Orientia tsutsugamushi'' infection) through their bite. The larval form (called chiggers) feeds on rodents, but also occasionally humans and other large mammals. They are related to the harvest mites of the North America and Europe. Originally, rodents were thought to be the main reservoir for ''O. tsutsugamushi'' and the mites were merely vectors of infection: that is, the mites only transferred the contagion from the rodents to humans. However, the mites are now known to only feed once in their lifetimes, which means that transmission from rodent to human via the mites is impossible (for it to have been possible, the mite would have to feed at least twice, once on the infected rodent and again on the human who would then be infected). Instead, the bacterium persists in the mites through transovarial transmission Transovarial or transovarian trans ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Afropolonia
''Afropolonia'' is a genus of chigger in the family Trombiculidae, subfamily Apoloniinae, and tribe Apoloniini. , it is monospecific, just consisting of its type species ''A. tgifi''. It is found in South Africa. Its type host is the Namaqua rock rat. M. Lee Goff circumscribed ''Afropolonia'' and described ''A. tgifi'' in 1983. Diagnosis and description In keys to Apoloniinae species written by Goff in 1983, by Goff and colleagues in 1989, and by Wayne A. Brown in 2006, ''Afropolonia tgifi'' was paired with ''Apolonia tigipioensis'', the sole species of its genus. All three of these keys noted ''Afropolonia'' could be distinguished from ''Apolonia'' in having five branched setae on the palpal tarsus and in lacking subterminala I. Russian acarologist Alexandr A. Stekolnikov's 2018 key to African Trombiculidae paired ''Afropolonia'' with a pair including ''Straelensia'' and ''Vargatula''. His key distinguished ''Afropolonia'' from those two genera in having both an anterior and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eutrombicula
''Eutrombicula'' is a genus of mites in the family Trombiculidae. The species of this genus are found throughout North America, and Australia. The genus was first described by Henry Ellsworth Ewing in 1938. Two genera of chigger mites, each containing many species, are of concern to U.S. deployed military forces. They are ''Eutrombicula'' and ''Leptotrombidium''. Chiggers in the genus ''Eutrombicula'', such as ''Eutrombicula alfreddugesi'', do not transmit any known pathogens to people, but they can cause irritating bites, dermatitis and severe itching when they feed on the unsuspecting host. They are widely distributed in the Western Hemisphere, and Europe. By comparison chiggers in the genus ''Leptotrombidium'' are the vectors of scrub typhus throughout Asia and portions of Australia. The bite of ''Leptotrombidium'' often does not itch, or at least not as intensely, as those of ''Eutrombicula''. Also, a black necrotic lesion known as an eschar develops where the chigger fed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Euschoengastia
''Euschoengastia'' is a genus of mites in the family Trombiculidae Trombiculidae (); commonly referred to in North America as chiggers and in Britain as harvest mites, but also known as berry bugs, bush-mites, red bugs or scrub-itch mites, are a family of mites. Chiggers are often confused with Tunga penetrans, .... References * Trombiculidae {{Trombidiformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neotrombicula
''Neotrombicula'' is a genus of mites in the family Trombiculidae Trombiculidae (); commonly referred to in North America as chiggers and in Britain as harvest mites, but also known as berry bugs, bush-mites, red bugs or scrub-itch mites, are a family of mites. Chiggers are often confused with jiggers – a t .... Species of this genus are found throughout Europe and North America. Species ''BioLib'' includes: # '' Neotrombicula absoluta'' Schluger, 1966 # '' Neotrombicula acomys'' (Radford, 1957) # '' Neotrombicula aeretes'' Hsu & Yang, 1985 # '' Neotrombicula agriotricha'' Stekolnikov, 1994 # '' Neotrombicula alexandrae'' Stekolnikov, 1993 # '' Neotrombicula anthiana'' Kolebinova, 1969 # '' Neotrombicula arcuata'' Wen & Jiang, 1984 # '' Neotrombicula austriaca'' Kepka, 1964 # '' Neotrombicula autumnalis'' (Shaw, 1790) # '' Neotrombicula balcanica'' Kolebinova, 1973 # '' Neotrombicula baschkirica'' Kudryashova, 1998 # '' Neotrombicula bisignata'' (Ewing, 1929) # '' Neotrombi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trombicula
''Trombicula'', known as chiggers, red bugs, scrub-itch mites, or berry bugs, are small arachnids (eight-legged arthropods) in the Trombiculidae family. In their larval stage, they attach to various animals, including humans, and feed on skin, often causing itching and trombiculosis. These relatives of ticks are nearly microscopic, measuring 0.4 mm (0.01 in) and have a chrome-orange hue. A common species of harvest mite in North America is '' Trombicula alfreddugesi''. The larval mites feed on the skin cells, but not blood, of animals. The six-legged parasitic larva feeds on a large variety of creatures, including humans, rabbits, wallabies, toads, box turtles, quail, and even some insects. After crawling onto their hosts, they inject digestive enzymes into the skin that break down skin cells. They do not actually "bite", but instead form a hole in the skin called a stylostome, and chew up tiny parts of the inner skin, thus causing severe irritation and swelling. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acomatacarus
''Acomatacarus'' is a genus of mites in the family Trombiculidae Trombiculidae (); commonly referred to in North America as chiggers and in Britain as harvest mites, but also known as berry bugs, bush-mites, red bugs or scrub-itch mites, are a family of mites. Chiggers are often confused with Tunga penetrans, .... The larvae are parasitic. Species are called also chiggers, scrub itch-mite. The genus includes '' Acomatacarus arizonensis'' (lizards), '' Acomatacarus australiensis'' (humans, dogs), '' Acomatacarus galli'' (chickens, mice, rats, rabbits). References Arachnids of North America Trombidiformes genera Parasites of dogs Parasites of reptiles {{Trombidiformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guntheria
''Guntheria'' is a genus of mites in the family Trombiculidae. The species of this genus are found in Australia and the islands to its north. The genus was first described by Herbert Womersley in 1939. Species The Australian Faunal Directory The Australian Faunal Directory (AFD) is an online catalogue of taxonomic and biological information on all animal species known to occur within Australia. It is a program of the Department of Climate Change, Energy, the Environment and Water of th ... lists the following as valid: * '' Guntheria agnewi'' (Domrow, 1964) * '' Guntheria alpina'' (Domrow, 1964) * '' Guntheria andromeda'' (Womersley, 1954) * '' Guntheria antipodianum'' (Hirst, 1929) * '' Guntheria arguri'' (Goff, 1979) * '' Guntheria bamaga'' Domrow, 1978 * '' Guntheria cassiope'' (Womersley, 1952) * '' Guntheria coorongensis'' (Hirst, 1929) * '' Guntheria daniae'' Domrow, 1971 * '' Guntheria dasycerci'' (Hirst, 1929) * '' Guntheria derricki'' (Womersley, 1939) * '' Guntheria d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trombidiidae
Trombidiidae, also known as red velvet mites, true velvet mites, or rain bugs, are small arachnids (eight-legged arthropods) found in plant litter and are known for their bright red color. While adults are typically in length, some, such as the genus ''Dinothrombium'', may reach up to . Their life pattern is in stages similar to other members of the Prostigmata: egg, pre-larva, larva, protonymph, deutonymph, tritonymph and adult (male or female). They usually have only one breeding cycle per year.Zhang, Zhi-Qiang (1998) Biology and ecology of trombidiid mites (Acari: Trombidioidea) Experimental & Applied Acarology 22:139–15PDF/ref> They are active predators as grown adults. As early instars they are often parasites of insects and other arachnids. One well known species from Europe, Asia, and North Africa is ''Trombidium holosericeum''. The systematics of this group has been in flux and many former subfamilies of this are now raised to families within the Trombidioidea. L ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
