hypostome

hypostome
The central unpaired holdfast organ of the tick capitulum; the h. is covered with recurved spines that enable it to serve as an anchoring device while the tick feeds. [hypo- + G. stoma, mouth]

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hy·po·stome 'hī-pə-.stōm n a rodlike organ that arises at the base of the beak in various mites and ticks

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hy·po·stome (hiґpo-stōm) [hypo- + stoma] any of several structures, parts, or organs found in association with the mouth in various organisms; e.g., the rodlike piercing mouth part, sometimes with spines or teeth, used by certain ticks and mites to thrust into and hold firmly onto the tissues of a prey or host.

Medical dictionary. 2011.

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  • Hypostome — Hy po*stome, Hypostoma Hy*pos to*ma, n. [NL. hypostoma, fr. Gr. ypo beneath + ? mouth.] (Zo[ o]l.) The lower lip of trilobites, crustaceans, etc. [1913 Webster] …   The Collaborative International Dictionary of English

  • Hypostome — may refer to:*The apical portion of the polyps of hydrozoan cnidarians like Hydra *The mouthparts of ticks and mites (Order Acari) *The ventral plate of trilobites and other arthropods …   Wikipedia

  • hypostome — ● hypostome nom masculin Portion de la tête des insectes qui se trouve au dessous de la lèvre inférieure …   Encyclopédie Universelle

  • Hypostome (tick) — A hypostome (also called the maxilla, radula, labium or Unterkiefer), is a calcified harpoon like structure near the mouth area of certain parasitic arthropods including ticks, that allows them to anchor themselves firmly in place on a host… …   Wikipedia

  • hypostome — noun Etymology: International Scientific Vocabulary hypo + stome (from Greek stoma mouth) more at stomach Date: circa 1862 any of several structures associated with the mouth: as a. the manubrium of a hydrozoan b. a rodlike organ that arises at… …   New Collegiate Dictionary

  • hypostome — n. [Gr. hypo, under; stoma, mouth] 1. (ARTHROPODA: Chelicerata) In Acari, forming the ventral median wall of the gnathosoma; fused with the pedipalps in most groups, but in ticks a toothed structure between the pedipalps. 2. (ARTHROPODA:… …   Dictionary of invertebrate zoology

  • hypostome — hypostomial, adj. /huy peuh stohm /, n. Zool. any of several parts or organs of the mouth, as the labrum of a crustacean. [1860 65; HYPO + STOME] * * * …   Universalium

  • hypostome — noun An appendage on the mouth of some insects and arachnids …   Wiktionary

  • hypostome — See: metastoma [Martin, 2005]. See: metastoma [McLaughlin, 1980]. (Order Decapoda): Labium. (Syn. hypostoma) [Stachowitsch, 1992]. (Class Ostracoda): Labium [Stachowitsch, 1992] …   Crustacea glossary

  • hypostome — (i po sto m ) s. m. Terme d entomologie. Partie de la tête des insectes. ÉTYMOLOGIE    Hypo...., et terme grec signifiant bouche …   Dictionnaire de la Langue Française d'Émile Littré

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