About 16 results
Open links in new tab
  1. 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.

  2. 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 ...

  3. 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.

  4. Mite | Small Arachnid, Habitat & Types | Britannica

    Apr 16, 2025 · 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

  5. 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.

  6. 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…

  7. Ocarina | Wind Instrument, Ceramic, Flute | Britannica

    Feb 19, 2025 · 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 …

  8. 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.

  9. Ricinuleid | arachnid order | Britannica

    Order Ricinulei (ricinuleids) 30 primarily tropical species. Size 8–10 mm; abdomen of 9 segments, last 3 forming taillike pygidium; 6-legged larval form. Subclass Acari, Acarina, or Acarida (mites and ticks) Read More; characteristics

  10. 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.

Refresh