Acarid | Characteristics & Control | Britannica
Acarid, (subclass Acari or Acarida or Acarina), any member of the subgroup of the arthropod class Arachnida that includes the mites and ticks. Some mites are as small as 0.1 mm (0.0039 inch) in length, while the largest ticks are slightly more than 30 mm (1.18 inches) long.
Acarid - Taxonomic classification | Britannica
Subclass Acari (Acarina, Acarida; mites and ticks) Arachnids usually without visible segmentation; mostly minute in size; larvae usually with 3 pairs of legs, adults usually with 4 pairs; diverse habitats include plants, soil, animals, stored foods, fresh and marine water; parasitic forms may transmit diseases; worldwide distribution; about ...
Acarid - Structural anatomy | Britannica
Acarid - Structural anatomy: The subclass Acari is generally distinguished by the lack of body segmentation, although it is secondarily developed in a few families. An anterior region called the gnathosoma contains the mouth, specialized feeding appendages, and segmented structures called palps, or pedipalps.
Characteristics of acarids | Britannica
acarid, Any member of the subclass Acari, which includes the mites and ticks of the class Arachnida.Acarids are found in diverse habitats, including hot springs, caves, deserts, and tundras.They range in shape from minute, soft-bodied, elongated or circular individuals to large, hard-bodied, spiderlike ones.
Ocarina | Wind Instrument, Ceramic, Flute | Britannica
Ocarina, globular flute, a late 19th-century musical development of traditional Italian carnival whistles of earthenware, often bird-shaped and sounding only one or two notes. It is an egg-shaped vessel of clay or metal or, as a toy, of plastic and …
Acarid - Ecology and habitat | Britannica - Encyclopedia Britannica
Acarid - Ecology and habitat: The free-living acarids include species from all of the orders and suborders except Ixodida (ticks). Many free-living mites utilize insects or other arthropods to disperse themselves, a nonparasitic association known as phoresy.
Mite | Small Arachnid, Habitat & Types | Britannica
2024年10月25日 · mite, any of numerous species of tiny arthropods, members of the mite and tick subclass Acari (class Arachnida), that live in a wide range of habitats, including brackish water, fresh water, hot springs, soil, plants, and (as parasites) animals, including humans. Parasitic forms may live in the nasal passages, lungs, stomach, or deeper body tissues of animals.
Acarine disease | Britannica
Other articles where Acarine disease is discussed: beekeeping: Diseases: Acarine disease is caused by the mite Acarapis woodi that gets into the tracheae of the bee through its breathing holes or spiracles in its thorax or midsection. Bees affected by this mite are unable to fly, have disjointed wings and distended abdomens. There is…
Deep-Sky Objects, Southern Sky, Brightest Stars - Britannica
Carina, constellation in the southern sky that stretches from about 7 to 11 hours right ascension and at about 60° south in declination. Its brightest star is Canopus, the second brightest star in the sky, with a magnitude of −0.7. Eta Carinae is a variable star that was even brighter than Canopus
Anatomy of arachnids | Britannica
Acarid, (subclass Acari or Acarida or Acarina), any member of the subgroup of the arthropod class Arachnida that includes the mites and ticks. Some mites are as small as 0.1 mm (0.0039 inch) in length, while the largest ticks are slightly more than 30 mm (1.18 inches) long.