Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

448Maggenti and Gardnertabolism, development, or response of the organism orsome particular part of it.horn n. [A.S. horn] 1. A stiff, pointed, unbranched cuticularprocess. 2. (ARTHRO: Insecta) a. A long handlelike processof the first gastric tergite of Innostemman wasps, thatcurves up and over the mesoscutum and houses the retractedovipositor. b. In the plural sometimes refers to antennae.horny a. [A.S. horn] Thickened or hardened.horny corals (CNID: Anthozoa) In the order Gorgonacea,commonly called sea fans or sea whips, with extensiveskeleton composed of a horny protein material, gorgonin.horotelic a. [Gr. horos, boundry; telos, completion] Pertainingto evolution proceeding at the standard rate. seetachytelic, bradytelic.host n. [L. hospes, guest or host] Any living organism in or onwhich a parasite lives, and/or feeds.host selection principle A theoretical hypothesis that femaleorganisms that breed on two or more hosts will return tothe host on which she was reared to reproduce.host specificity The degree to which a parasite is able to maturein one or more host species.Hoyle's organ (MOLL: Cephalopoda) In embryonic Sepia, adistinct set of cells in an anchor-shaped complex at the siteof the shell sac closure; a hatching gland that produces aproteolytic enzyme that dissolves the chorion and surroundingenvelope.humeral a. [L. humerus, shoulder] 1. Pertaining to or situatedon the shoulder. 2. (ARTHRO: Insecta) The anterior basalportion of an insect wing.humeral angle (ARTHRO: Insecta) 1. The basal anterior angleor portion of a wing. 2. The outer anterior angle of the elytrumof beetles.humeral bristles (ARTHRO: Insecta) In Diptera, the bristles onthe humeral callus.humeral callus (ARTHRO: Insecta) In Diptera, a more or lessrounded tuberculate anterior lateral angle of the thoracic