Anterior cardiac chamber see proventriculus

anterior hard plate (ARTHRO: Insecta) In Diptera, an irregular platelike anterior area of the clypeopalatum of Culicidae.

anterior keel (MOLL) The high point of the whorl next to the suture at the lower edge of the shell nearest to the anterior end.

anterior lateral tooth (MOLL: Bivalvia) A lateral tooth in front of the beak.

anterior promontory (ARTHRO: Insecta) In Diptera, the median area of the mesonotum, at the anterior end of the acrostichal area.

anterior setae see ventral setae anterior stigmatal tubercle (ARTHRO: Insecta) Prominence on the thoracic and abdominal segments of caterpillars.

anterior tentorial arms (ARTHRO: Insecta) An apodeme arising from the anterior tentorial pits, meeting the posterior tentorial arm at a visible fusion point; sometimes bearing a small dorsal or ventral tentorial arm.

anterior tentorial pits (ARTHRO: Insecta) External depressions in the epistomal suture marking the base of the anterior tentorial arm(s).

anterior tubercle (ARTHRO: Crustacea) A swelling or small projection in the anterior region of the carapace of ar-chaeostracans; polygenetic, sometimes including the optic tubercle.

anterobiprostatic a. [L. antero, anterior; bis, twice; Gr. pro-histanai, to set before] (ANN: Oligochaeta) Pertaining to the male terminalia of parthenogenetic earthworm morphs in which the posterior prostates of an acanthodrilin set are absent.

anterodorsal a. [L. antero, anterior; dorsum, back] Toward the front and the top or upper side.

anterolateral region (ARTHRO: Crustacea) The lateral part of the carapace bordering the subhepatic or hepatic regions.

anteromesal a. [L. antero, anterior; mesos, middle] In the front and along the midline of a body.

anteroposterior axis The longitudinal axis, from head to tail.

anteroventral a. [L. antero, anterior; venter, belly] In the front on the lower side.

antesternite n. [L. ante, before; Gr. sternon, breastbone] (AR-THRO: Insecta) The anterior ventral plate or spicule; basis-ternum; eusternum.

anthelmintic, anthelminthic a. [Gr. anti, against; helmins, worm] Pertaining to therapeutic agents used against intestinal helminths causing death or expulsion. see vermicide, vermifuge.

anthobian n. [Gr. anthos, flowers; bios, life] Feeding on flowers.

anthoblast n. [Gr. anthos, flower; blastos, bud] (CNID: Antho-zoa) In stony corals, a young sessile polyp producing an anthocyathus.

anthocaulus n. [Gr. anthos, flower; kaulos, stalk] (CNID: An-thozoa) The stalk of a solitary coral after the separation of the disklike anthocyathus.

anthocodium n.; pl. -ia [Gr. anthos, flower; kodeia, head] (CNID: Anthozoa) The distal end of an alcyonarian coral; the upper tentacular part of the polyp that can be retracted into the calyx.

anthocyanins n.pl. [Gr. anthos, flower; kyanos, blue] Important plant pigments (flavones) that may contribute to the blue or red coloration of insects. see anthoxanthins.

anthocyathus n.; pl. -ia [Gr. anthos, flower; kyathos, cup] (CNID: Anthozoa) The disklike crown portion of solitary corals that separates from the stalk (anthocaulus).

anthogenesis n. [Gr. anthos, flower; genesis, beginning] The production of both males and females by parthenogenesis.

anthophilous a. [Gr. anthos, flower; philein, to love] Designating attraction to or feeding on flowers; anthobian.

anthostele n. [Gr. anthos, flower; stele, column] (CNID: Anthozoa) The stiff proximal part of certain stoloniferan polyps into which the tentacular portion is retracted.

anthoxanthins n.pl. [Gr. anthos, flower; xanthos, yellow] Plant pigments (flavones) responsible for the ivory to yellow color of some true bugs and Lepidoptera. see antho-cyanins.

Anthozoa, anthozoans n.; n.pl. [Gr. anthos, flower; zoon, animal] Any coelenterate of the class Anthozoa, phylum Cnidaria, including the sea anemones and corals.

anthracene, anthracine n. [Gr. anthrax, coal] Coal black; shiny black with a bluish tint.

anthraquinones n.pl. (ARTHRO: Insecta) A group of orange or red pigments found in certain insects.

anthropochorous a. [Gr. anthropos, man; chorein, to spread] Refers to any disease or organism transported by man, usually unintentionally; peregrine.

anthropogenic a. [Gr. anthropos, man; genes, producing] Caused by, or resulting from, the influence of man.

anthropomorphic a. [Gr. anthropos, man; morphe, form] Attributing human attributes to animals.

anthropophilous a. [Gr. anthropos, man; philein, to love] Used to describe insects that prefer human blood.

anthropozoic a. [Gr. anthropos, man; zoe, life] Designating that period of time since man appeared upon the earth.

anthropozoonosis n. [Gr. anthropos, man; zoon, animal; nosos, disease] A disease of humans transmissible to other animals. see zooanthroponosis, zoonosis.

antiaposematic a. [Gr. anti, against; apo, away; sema, signal] Referring to coloration that disguises a predator. see parasematic, aposematic.

antibiosis n. [Gr. anti, against; biosis, manner of life] An association between two organisms in which one secretes a substance destroying or inhibiting the other.

anticlinal a. [Gr. anti, against; klinein, to bend] Radial; inclining in opposite directions; at right angles to the surface of a part.

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