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Sandflies
Sandfly (or sand fly) is a colloquial name for any species or genus of flying, biting, blood-sucking dipteran (fly) encountered in sandy areas. In the United States, ''sandfly'' may refer to certain horse flies that are also known as "greenheads" (family Tabanidae), or to members of the family Ceratopogonidae. The bites usually result in a small, intensely itchy bump or welt, the strength of which intensifies over a period of 5-7 days before dissipating. Moderate relief is achieved with varying success through the application of over the counter products such as Benadryl (ingested) or an analgesic cream such as After Bite (applied topically). Outside the United States, ''sandfly'' may refer to members of the subfamily Phlebotominae within the Psychodidae. Biting midges (Ceratopogonidae) are sometimes called sandflies or no-see-ums (no-see-em, noseeum). New Zealand sandflies are in the genus '' Austrosimulium'', a type of black fly. In the various sorts of sandfly only the f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leishmaniasis
Leishmaniasis is a wide array of clinical manifestations caused by parasites of the trypanosome genus '' Leishmania''. It is generally spread through the bite of phlebotomine sandflies, '' Phlebotomus'' and ''Lutzomyia'', and occurs most frequently in the tropics and sub-tropics of Africa, Asia, the Americas, and southern Europe. The disease can present in three main ways: cutaneous, mucocutaneous, or visceral. The cutaneous form presents with skin ulcers, while the mucocutaneous form presents with ulcers of the skin, mouth, and nose. The visceral form starts with skin ulcers and later presents with fever, low red blood cell count, and enlarged spleen and liver. Infections in humans are caused by more than 20 species of ''Leishmania''. Risk factors include poverty, malnutrition, deforestation, and urbanization. All three types can be diagnosed by seeing the parasites under microscopy. Additionally, visceral disease can be diagnosed by blood tests. Leishmaniasis can be p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Austrosimulium
''Austrosimulium'' is a genus of 31 species of black flies that are distributed in Australia and New Zealand. There are 2 genus, subgenera: ''Austrosimulium (subgenus), Austrosimulium'' whose species are principally from New Zealand, and ''Novaustrosimulium'' which are exclusively Australian. ''Austrosimulium'' is a sister genus to the monospecific ''Paraustrosimulium'' of South America. Some species are known to spread the protozoan blood parasite ''Leucocytozoon tawaki'' in penguins. In New Zealand, where they are known as ''sandfly, sandflies'' or namu (in Māori language, Māori from Proto-Austronesian language, Proto-Austronesian *''ñamuk'' "mosquito", compare with ms, nyamuk), three species – ''Austrosimulium australense, A. australense'', ''Austrosimulium tillyardianum, A. tillyardianum'' and ''Austrosimulium ungulatum, A. ungulatum'' – bite humans. Species *Subgenus ''Austrosimulium (subgenus), Austrosimulium'' Tonnoir, 1925 **''Austrosimulium albovelatum, A. albov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lutzomyia
''Lutzomyia'' is a genus of Phlebotominae, phlebotomine Sandfly, sand flies consisting of nearly 400 species, at least 33 of which have medical importance as Vector (epidemiology), vectors of human disease. Species of the genus ''Lutzomyia'' are found only in the New World, distributed in southern areas of the Nearctic realm, Nearctic and throughout the Neotropical realm. ''Lutzomyia'' is one of the two genera of the subfamily Phlebotominae to transmit the Leishmania parasite, with the other being ''Phlebotomus'', found only in the Old World. ''Lutzomyia'' sand flies also serve as vectors for the bacterial Oroya fever, Carrion's disease and a number of arboviruses. Evolution The genus, named after Adolfo Lutz, is known from the extinct Burdigalian (20-15 Mya (unit), mya) species ''Lutzomyia adiketis'' found as a fossil in Dominican amber on the island of Hispaniola. It is thought that species in the genus ''Lutzomyia'' all originated in the lowland forests to the east of the Ande ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pappataci Fever
Pappataci fever (also known as Phlebotomus fever and, somewhat confusingly, sandfly fever and three-day fever) is a vector-borne febrile arboviral infection caused by three serotypes of Phlebovirus. It occurs in subtropical regions of the Eastern Hemisphere. The name, pappataci fever, comes from the Italian word for sandfly; it is the union of the words ''pappa'' (usually this is used as a generic name for food, but in this case it is a ''verb'' meaning "eating") and ''taci'' (silent), distinguishing these insects from blood-feeding mosquitoes, which produce a typical noise while flying. Signs and symptoms A few days after the infective bite, a feeling of lassitude, abdominal distress and chills develop followed by fever of , severe frontal headaches, muscle and joint aches, flushing of the face and a fast heart rate. After two days the fever begins to subside and the temperature returns to normal. Fatigue, a slow heart rate and low blood pressure may persist from a few day ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Black Fly
A black fly or blackfly (sometimes called a buffalo gnat, turkey gnat, or white socks) is any member of the family Simuliidae of the Culicomorpha infraorder. It is related to the Ceratopogonidae, Chironomidae, and Thaumaleidae. Over 2,200 species of black flies have been formally named, of which 15 are extinct. They are divided into two subfamilies: Parasimuliinae contains only one genus and four species; Simuliinae contains all the rest. Over 1,800 of the species belong to the genus '' Simulium''. Most black flies gain nourishment by feeding on the blood of mammals, including humans, although the males feed mainly on nectar. They are usually small, black or gray, with short legs, and antennae. They are a common nuisance for humans, and many U.S. states have programs to suppress the black fly population. They spread several diseases, including river blindness in Africa (''Simulium damnosum'' and ''S. neavei'') and the Americas (''S. callidum'' and ''S. metallicum'' in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diptera Flies are insects of the order Diptera, the name being derived from the Greek δι- ''di-'' "two", and πτερόν ''pteron'' "wing". Insects of this order use only a single pair of wings to fly, the hindwings having evolved into advanced mechanosensory organs known as halteres, which act as high-speed sensors of rotational movement and allow dipterans to perform advanced aerobatics. Diptera is a large order containing an estimated 1,000,000 species including horse-flies, crane flies, hoverflies and others, although only about 1 |
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