Слова на букву helm-inte (732) Dictionary of invertebrate zoology
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Слова на букву helm-inte (732)

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adj. [Gr. homoios, like; idios, personal] (ARTHROPODA: Insecta) In larvae, denoting a mesoseries of crochets bearing well developed hooks throughout the entire series; ...
adj. [Gr. homoios, like; osmose, impulse] Said of organisms maintaining constant internal osmotic pressure.
adj. [Gr. homoios, like; thermos, warm] Pertaining to warm-blooded animals having a relatively constant body temperature due to their surrounding environment; see ...
homolecithal egg
An egg-cell with a relatively small amount of yolk evenly distributed through the cytoplasm.
См. homology.
n. [Gr. homologos, agreeing] 1. Features or organs in two or more taxa that can be traced back to the same (or an equivalent) feature in the common ancester of these taxa; ...
n. [Gr. homos, same; morphe, form] Larvae resembling the adults.
adj. [Gr. homos, same; morphe, form] Being similar in appearance or form.
n. [Gr. homos, same; morphosis, forming] In regeneration, when the reformed part or structure is similar to the part removed; see heteromorphosis.
see isomyarian.
adj. [Gr. homos, same; nomos, usage] Being similar in form, function or development; see heteronomous.
homonomous segmentation
Relative similarity in body segments arranged on a transverse axis; see heteronomous segmentation.
n. [Gr. homos, same; onyma, name] The same independently proposed generic or specific name for the same or different taxa; see senior homonym, junior homonym.
n. [Gr. homos, same; plastos, formed] Resemblance between parts or organs between different organisms due to evolutionary convergence or of parallel evolution; homoplastic a; ...
n. [Gr. homos, same; plastos, formed] An idorgan composed of similar plastids; see alloplast.
См. homoplassy.
adj. [Gr. homos, same; pteron, wing] (ARTHROPODA: Insecta) Having the anterior and posterior pairs of wings alike.
adj. [Gr. homos, same; rhabdos, rod] (MOLLUSCA: Bivalvia) Pertaining to lamellibranch gill filaments that are arranged in a flat, uniform series; see heterorhabdic.
see homomorpha.
adj. [Gr. homos, same; L. sequor, follow] Pertaining to species with identical karyotypes.
n. [Gr. homos, same; stasis, a standing] Stase which differs only slightly from its neighboring stases.
n. [Gr. homos, same; taxis, arrangement] An assemblage or succession of species in different strata or regions, may or may not be contemporaneous.
adj. [Gr. homos, same; L. tenere, to hold] Retaining the primitive form; homotenous adj..
see homoiothermal.
homotrichous anisorhiza
(CNIDARIA) A nematocyst open at the tip with a slightly swollen base, and with spines of equal length along the thread.
n. [Gr. homos, same; typos, type] A structure corresponding to a structure on the opposite side of the body; reverse symmetry; homeotype; see enantiomorphic.
adj. [Gr. homos, same; typos, type] 1. Pertaining to the second meiotic division (meiosis). 2. Exhibiting homotypy.
n. [Gr. homos, same; typos, type] The similarity or equality of body structures along the main axis; see enantiomorphic.
n. [Gr. homos, same; zygon, yoke] Quality or condition of bearing two identical alleles at one or more loci in homologous chromosome segments; see heterozygosity.
n. [Gr. homos, same; zygon, yoke] One who exhibits homozygosity; see heterozygote.
adj. [Gr. homos, same; zygon, yoke] Pertains to having identical alleles in the corresponding loci of homologous chromosomes; therefore breeding true; see heterozygous.
n. [ME. honey] Thickened partially digested secretion from nectar of flowers produced by honeybees by enzymatic action and used as food for larvae.
honey dew
A sweetish liquid excreted by aphids or other homopterous insects.
honey stomach
(ARTHROPODA: Insecta) A thin-walled enlargement of the esophagus (crop) in which the honeybee transports nectar.
honey tube
see cornicle.
n. [A.S. hunigcamb] 1. A waxen structure built by bees in their nests consisting of an aggregation of hexagonal cells used as breeding cells for larvae and the storage of ...
(ARTHROPODA: Insecta) A wax container deposited inside the entrance of the nest cavity filled with nectar by a solitary queen bumblebee when establishing a colony.
n. [A.S. hod] 1. A color marking or expansion suggesting a hood. 2. (ARTHROPODA: Chelicerata) In beetle mites, the dorsal wall of the camerostome that extends over the ...
hood protractor
(CHAETOGNATHA) An unpaired muscle that is found in the free edge of the hood that acts as a sphincter muscle to pull the hood over the head; protractor preputii.
hood retractor
(CHAETOGNATHA) One of a pair of curved muscles originating on connective tissue beneath the brain and attaching to the neck plates (collarette) which retract the hood ...
hooded seta
(ANNELIDA: Polychaeta) A stout, blunt or apically toothed seta with the apex protected by a delicate chitinous guard; a hook.
См. hooklets.
hook glands
(ARTHROPODA: Pentastomida) The paired longitudinal glands that unite anteriorly to form the head gland.
see hamulus, uncus.
adj. [Gr. hoplon, implement; chaite, hair] (ANNELIDA: Oligochaeta) Denoting earthworm male terminalia in which one pair of sperm ducts open together with the prostatic ducts ...
hopopleural bristles
(ARTHROPODA: Insecta) In Diptera, a row of bristles, usually vertical, on the hypopleuron, above the hind coxae.
n. [Gr. horios, in season; dis, twice; morphe, form] Seasonal dimorphism.
n. [Gr. horos, boundry; logos, discourse] (ARTHROPODA: Insecta) Scientific description of the neuration of insects wings; see orismology.
adj. [Gr. horizon, bounding] Laying in a plane at right angles to a primary axis; parallel with the horizon.
horizontal classification
Classification focusing on grouping species in a similar stage of evolution, rather than location on the same phyletic line; see vertical classification.
n. [Gr. horme, impulse, impetus] 1. Behavioral activity directed toward a goal. 2. In living cells or organisms a purposive behavior, urge or drive.
n. [Gr. hormao, instigate] A chemical regulator or coordinator secretion having some specific effect on metabolism, development, or response of the organism or some ...
n. [A.S. horn] 1. A stiff, pointed, unbranched cuticular process. 2. (ARTHROPODA: Insecta) a. A long handlelike process of the first gastric tergite of Innostemman wasps, ...
adj. [A.S. horn] Thickened or hardened.
horny corals
(CNIDARIA: Anthozoa) In the order Gorgonacea, commonly called sea fans or sea whips, with extensive skeleton composed of a horny protein material, gorgonin.
adj. [Gr. horos, boundry; telos, completion] Pertaining to evolution proceeding at the standard rate; see tachytelic, bradytelic.
n. [L. hospes, guest or host] Any living organism in or on which a parasite lives, and/or feeds.
host selection principle
A theoretical hypothesis that female organisms that breed on two or more hosts will return to the host on which she was reared to reproduce.
host specificity
The degree to which a parasite is able to mature in one or more host species.
Hoyle's organ
(MOLLUSCA: Cephalopoda) In embryonic Sepia, a distinct set of cells in an anchor-shaped complex at the site of the shell sac closure; a hatching gland that produces a ...
adj. [L. humerus, shoulder] 1. Pertaining to or situated on the shoulder. 2. (ARTHROPODA: Insecta) The anterior basal portion of an insect wing.
humeral angle
(ARTHROPODA: Insecta) 1. The basal anterior angle or portion of a wing. 2. The outer anterior angle of the elytrum of beetles.
humeral bristles
(ARTHROPODA: Insecta) In Diptera, the bristles on the humeral callus.
humeral callus
(ARTHROPODA: Insecta) In Diptera, a more or less rounded tuberculate anterior lateral angle of the thoracic notum.
humeral carina
(ARTHROPODA: Insecta) In Coleoptera, an elevated keel-like ridge on the outer anterior angle of an elytron.
humeral cross vein
A cross vein between the base of a wing and the apex of the subcosta.
humeral lobe
(ARTHROPODA: Insecta) The base of the costal margin of the hind wing that overlaps the fore wing in some primitive forms that serves to prevent the wings from moving out of ...
humeral nerve
(ARTHROPODA: Insecta) A transverse nerve in the wing between the costal and subcostal veins.
humeral plate
(ARTHROPODA: Insecta) 1. In Odonata, a large plate hinged to the tergum and supported by an arm from the pleural wing process. 2. In Hymenoptera (wasps and honey bees), a ...
humeral suture
see mesopleural suture, basal suture.
humeral vein
(ARTHROPODA: Insecta) A branch of the subcosta that serves to strengthen the humeral angle of the hind wing.
n.; pl. humeri [L. humerus, shoulder] (ARTHROPODA: Insecta) The shoulder.
n. [L. humor, fluid] Any body fluid, natural or morbid.
adj. [Gr. hyalos, glass] Clear, transparent or glassy.
hyaline cells
see granulocyte.
n. [Gr. hyalos, glass; genes, producing] Insoluble substances found in animal tissues and related to mucoids.
См. hyaloplasma.
n. [Gr. hyalos, glass; plasma, formed or molded] 1. The base substance of cytoplasm in which organelles are found. 2. (ARTHROPODA: Insecta) The clear non-contractile matter ...
adj. [Gr. hyalos, glass; pteron, wing] (ARTHROPODA: Insecta) Having transparent wings as the clear winged aegerid moths.
n. [L. hybrida, a crossbred animal] The offspring of two forms or species that are genetically dissimilar; a heterozygote; see cross.
hybrid vigour
see heterosis.
n. [L. hybrida, a crossbred animal] The crossing of individuals belonging to two unlike natural populations, or to different species.
hydatid cyst
(PLATYHELMINTHES: Cestoda) Metacestode of Echinococcus, with many protoscolices, some budding inside secondary brood cysts.
hydatid sand
(PLATYHELMINTHES: Cestoda) Free protoscolices forming the sediment in a hydatid cyst.
n. [Gr. hydor, water; tuba, horn] (CNIDARIA: Scyphozoa) A simple polyp-like stage that may produce a few more polyps, but all bud off larvae known as ephyrae, which bud ...
n. [Gr. hydor, water; anthos, flower] (CNIDARIA: Hydrozoa) A nutritive zooid in a colony; the hydroid polyp, bearing a mouth, digestive cavity and tentacles.
adj. [Gr. hydor, water; arche, beginning] A series of changes in time from newly formed pond or lake to land with climax vegetation; an ecological succession.
adj. [Gr. hydor, water; elaunein, to set in motion] Of or pertaining to the effects stimulation of glands have on active transport of inorganic solutes and water.
adj. [Gr. hydor, water] 1. Having an abundant supply of moisture. 2. Pertaining to or containing hydrogen.
n. [Gr. hydor, water; bios, life; logos, discourse] Study of aquatic plants and animals.
n. [Gr. hydor, water; bion, living] An organism that lives mainly in water.
n. [Gr. hydor, water; L. carbo, coal] A chemical compound of hydrogen and carbon, usually in the proportion of C-H20.
n.; pl. -cauli [Gr. hydor, water; kaulos, stem] (CNIDARIA: Hydrozoa) The simple or branched upright portion of a hydroid colony; stem.
adj. [Gr. hydor, water; chorein, to spread] Pertains to dispersal by water; being dependent on water for dissemination.
n. [Gr. hydor, water; kirkos, circle] (ECHINODERMATA) The hydrocoelic ring surrounding the mouth.
n.; pl. -ia [Gr. hydor, water; klados, branch] (CNIDARIA: Hydrozoa) The lateral growing branch of the hydrocaulus; the secondary branches.
n. [Gr. hydor, water; koilos, hollow] (ECHINODERMATA) Part of the embryonic coelom which develops into the water vascular system.
n. pl. [Gr. hydor, water; L. colere, to dwell] Organisms living in water or a wet environment.
see dactylozooid.
n. [Gr. hydor, water; oikos, house] (CNIDARIA: Hydrozoa) A sheath-like extension that protects the zone of the siphonophoran bell from adjacent bells.
n. [Gr. hydor, water; L. fugere, to flee] (ARTHROPODA: Insecta) 1. Water repelling hairs. 2. The outer surface of the chorion of eggs, as well as the cuticles, respiratory ...
n. [Gr. hydor, water; eidos, like] (CNIDARIA) Polyp of coelenterates; any member of the Hydroida.
n.; pl. -es [Gr. hydor, water; lyein, to dissolve] Reaction of water with substances to produce simpler compounds as starch reduction to sugars or with inorganic compounds to ...
adj. [Gr. hydor, water; phanerus, visible] Becoming transparent when immersed in water.
hydrophile hair
(ARTHROPODA: Insecta) A water-attracting hair as opposed to a hydrophobe hair.
adj. [Gr. hydor, water; philein, to love] Moistureloving; hygrophilous.
hydrophobe hair
(ARTHROPODA: Insecta) A hair with resistance to wetting, thus making a 90° angle of contact with the water surface; see hydrophile hair.
n.; pl. -lia [Gr. hydor, water; phyllon, leaf] (CNIDARIA: Hydrozoa) A thick, gelatinous, helmet-shaped or leaf-like medusoid containing a simple or branched gastrovascular ...
n. [Gr. hydor, water; phyton, plant] (CNIDARIA: Hydrozoa) A hydroid colony complete with root-like organ, stem and branches.
n. [Gr. hydor, water; L. dim. planus, flat] (CNIDARIA) Larval stage between the planula and actinula larval stages.
n. [Gr. hydor, water; F. polype, polyp] (CNIDARIA: Hydrozoa) A single polyp of a hydroid colony; see hydrula.
n. [Gr. hydor, water; poros, hole] (ECHINODERMATA) In some modern larvae and some extinct forms, the opening into the left axocoel anterior to the hydrocoel, i.e., the ...
n. [Gr. hydor, water; pyle, orifice] (ARTHROPODA: Insecta) A specialized structure of an egg for the uptake of water; the thickened region of the serosal epicuticle over a ...
n. [Gr. hydor, water; rhiza, root] (CNIDARIA: Hydrozoa) A tubular or ribbon-like basal attachment of a colony anchoring the colony to the substrate; the stalk of the ...
n. [Gr. hydor, water; serere, to join] A sere originating in water; see lithosere, xerosere.
(=hydrosoma) adj. [Gr. hydor, water; soma, body] (CNIDARIA) A hydra-like stage.
n. [Gr. hydor, water; sphaira, ball] Aqueous envelope of the earth.
n. [Gr. hydor, water; L. spira, coil] (ECHINODERMATA) In extinct Blastoidea, respiratory structures in the form of pouches at the side of the ambulacral grooves.
adj. [Gr. hydor, water; statikos, cause to stand] 1. Of or pertaining to the pressure of water. 2. (ARTHROPODA: Insecta) Pertains to floats, as air sacs in larval aquatic ...
hydrostatic organs
(ARTHROPODA: Insecta) In some larval Culicidae, pigmented, crecent-shaped organs found laterally on the thorax and near the tail.
hydrostatic system
(BRYOZOA: Gymnolaemata) A method of protrusion of the lophophore in some autozooids; made up of flexible frontal wall or infolded frontal wall sac and attached parietal ...
n. [Gr. hydor, water; stoma, mouth] (CNIDARIA: Hydrozoa) The mouth of a polyp.
n. [Gr. hydor, water; taxis, arrangement] A taxis in response to a moisture gradient initiating stimulus.
n. [Gr. hydor, water; theke, case] (CNIDARIA: Hydrozoa) Peridermal cups into which most or all of the hydranth can retract, may be provided with an operculum; in some ...
n. [Gr. hydor, water; tropos, turn] The response of an organism to water stimulus.
См. hydrozoans.
n.; n. pl. [Gr. hydor, water; zoon, animal] Class of the phylum Cnidaria having both polyp and medusal stages.
n. [Gr. hydor, water] A simple hypothetical polyp; see hydropolyp.
adj. [Gr. hygros, wet] Tolerating or being adapted to humid conditions.
n. [Gr. hygros, wet; kinesis, movement] Orientation due to differences in humidity.
n. [Gr. hygros, wet; metabole, change] The influence on metabolism by humidity.
adj. [Gr. hygros, wet; petros, stone] Pertaining to the fauna of submerged rocks.
see hydrophilous.
adj. [Gr. hygros, wet; L. recipere, to receive] A sensory cell or structure that is sensitive to moisture.
adj. [Gr. hygros, wet; skopein, to view] Moisture sensitive; retaining moisture; accumulating moisture.
see hydrotaxis.
see hydrotropism.
n. [Gr. hyle, material; gamos, marriage] The fusion of gametes; syngamy.
adj. [Gr. hyle, wood; phagein, to eat] Wood eating, as some insects.
adj. [Gr. hyle, wood; temnein, to cut] Cutting wood, as some insects.
n. [Gr. hymen] Membrane.
hyoid sclerite
(ARTHROPODA: Insecta) A small sclerite near the base of the labrum in many cyclorrhaphous flies.
hyote spines
(MOLLUSCA: Bivalvia) Variably shaped (founded, earshaped), hollow, tubular spines open at their tips and on their flanks, arising from the thin edges of the shell margin of ...
n.; pl. -dria [Gr. hypo, under; aner, male] (ARTHROPODA: Insecta) The plate below the genitalia of males, usually in abdominal sternum 8 or 9; see subgenital plate.
adj. [Gr. hyper, above; andros, male] (ANNELIDA: Oligochaeta) In earthworms, having additional testes other than those of segments x-xi; hyperandry n.
n. [Gr. hyper, above; apo, separation; lyein, to dissolve] (PLATYHELMINTHES: Cestoda) Detachment of a juvenile tapeworm proglottid before eggs are formed.
see hyperploid.
n. [Gr. hyper, above; gamos, marriage] Sperm digested by blood cells or phagocytes, thought to be of nutritional value.
adj. [Gr. hyper, above; gyne, woman] (ANNELIDA: Oligochaeta) In earthworms, having additional ovaries other than those of segments xii-xiii; hypergyny n.
adj. [Gr. hyper, above; hals, sea] Pertaining to waters above the salinity of normal sea water; above 40 parts per thousand; see hypohaline.
see hyperploid.
adj. [Gr. hyper, above; meros, part] (ANNELIDA: Oligochaeta) Said of regenerate earthworms, which reproduce more segments than originally removed; hypermery n; see hypomeric.
n. [Gr. hyper, above; meta, after; morphosis, forming] 1. In the broad sense, refers to change of form throughout the life history. 2. (ARTHROPODA: Insecta) A type of ...
n. [Gr. hyper, above; parasitos, one who eats at the table of another] An organism parasitic upon another parasite.
n. [Gr. hyper, above; plasis, a molding] An increase in the number of functional units of an organ (organelle, cell, tissue); hyperplasic a; see hypertrophy.
adj. [Gr. hyper, above; aploos, onefold] Cells or individuals having more chromosomes (or segments) than the characteristic euploid number; see hypoploid, aneuploid, ...
adj. [Gr. hyper, above; pneustikos, of breathing] (ARTHROPODA: Insecta) In some Diplura, pertaining to the greater number of thoracic spiracles.
hyperstomial ooecium
(BRYOZOA) An ooecium that rests on or is partly embedded in the distal zooid with opening above the operculum of the mother zooid.
adj. [Gr. hyper, above; strophe, twist] (MOLLUSCA: Gastropoda) In dextrally organized gastropods, characterized by genitalia on right, but shell falsely sinistral, being ...
n. [Gr. hyper, above; telos, completion] Ornamentation or coloration without apparent purpose.
n. [Gr. hyper, above; trichos, hair] Presence of setae in greater numbers than those present in its natural group of invertebrates; see holotrichy.
n. [Gr. hyper, above; trophe, nourishment] The enlargement of an organ due to the increase in the size of its constituent cells; see atrophy.
see hypopharynx.
n. [Gr. hypnodes, drowsy] A resting stage of some organisms.
n. [Gr. hypnos, sleep] A state of fatigue or inhibition due to excessive mechanical stimuli affecting the nervous system; reflex immobilization; see stereokinesis.
n. [Gr. hypnos, sleep] An organism in a dormant condition.
see prepupa.
n. [Gr. hypnos, sleep; toxikon, poison] (CNIDARIA) A proteinaceous toxin released from a penetrant nematocyst.
n. [Gr. hypo, under; benthos, sea bottom] Sea bottom fauna below 1000 m, corresponds roughly to bathyal and abyssal benthic dwellers; see epibenthos.
adj. [Gr. hypo, under; bios, life] Pertaining to organisms that live under objects or projections; see epibiotic.
n. [Gr. hypo, under; blastos, bud] Endoderm in early embryos, entoderm; see endoderm.
hypobranchial gland
(MOLLUSCA) Single or paired glandular epidermal areas of the roof of the mantle cavity.
hypobranchial space
(ARTHROPODA: Crustacea) The area of the lower gill chamber, (below gills).
hypocerebral ganglion
(ARTHROPODA: Insecta) An expansion of the recurrent nerve in the anterior division of the autonomic nervous system; see occipital ganglion.
n. [Gr. hypo, under; daktylos, finger] (ARTHROPODA: Insecta) The modified labium of Hemiptera.
see hypodermis.
adj. [Gr. hypo, under; L. dermis, skin] Of or relating to the hypodermis.
hypodermal chord
(NEMATA) Dorsal, ventral or lateral longitudinal thickenings of the hypodermis, generally internal.
hypodermal glands
(NEMATA) Glands of hypodermal origin that may serve as excretory glands.
hypodermic envelope
see peripodial sac.
n. [Gr. hypo, under; L. dermis, skin] The cellular, subcuticular layer that secretes the cuticle of annelids, nematodes, arthropods (see epidermis), and various other ...
n. [Gr. hypo, under; deigma, specimen] The entire material of a species available to the taxonomist.
see hypoploid.
adj. [Gr. hypo, under; gaia, the earth] 1. Living in the soil; endogean. 2. (ARTHROPODA: Insecta) Soil dwellers except for nuptial flight.
См. hypogaen.
n. [Gr. hypo, under; glossa, tongue] (ARTHROPODA: Insecta) In brachycerous and cyclorrhaphous Diptera, the dorsal wall of the premental plate, formed by the sclerotized ...
n. [Gr. hypo, under; glossa, tongue] (ARTHROPODA: Insecta) The under portion of the tongue.
n. [Gr. hypo, under; glottis, mouth of windpipe] (ARTHROPODA: Insecta) In Coleoptera, the sclerite between the mentum and labium.
adj. [Gr. hypo, under; gnathos, jaw] (ARTHROPODA: Insecta) When the head is joined to the thorax so the mouth parts are directed ventrally; see prognathous, ...
n. [Gr. hypo, under; gyne, female] (ARTHROPODA: Insecta) The eighth abdominal sternite of a female; formerly, the genital plate.
adj. [Gr. hypo, under; hals, sea] Pertaining to waters under the salinity of normal sea water; below 30 parts per thousand; brackish; see hyperhaline, euhaline.
see hypoploid.
n. [Gr. hypo, under; limne, lake] The bottom stratum in deep lakes containing low oxygen and near absence of living organisms; see epilimnion, thermocline.
adj. [Gr. hypo, under; lithos, stone] Living beneath stones.
adj. [Gr. hypo, under; megas, great] Pertaining to the smallest in a series of polymorphic organisms.
n. [Gr. hypo, under; meros, part] 1. (ARTHROPODA: Insecta) a. The ventral process of the phallobase. b. Inflexed edge of the pronotum and raised margin of the epipleura ...
adj. [Gr. hypo, under; meros, part] (ANNELIDA: Oligochaeta) A condition of regenerates with fewer segments than had been removed; see hypermeric.
see hypomere.
n. [Gr. hypo, under; morphe, form] An allele that functions more weakly when compared with wild-type alleles; a leaky gene.
adj. [Gr. hypo, under; neuron, nerve] (ECHINODERMATA) Part of the nervous system deeper and more weakly developed than the ectoneural system.
n. [Gr. hypo, under; neustos, swimming] Any organism that swims or floats near the surface of the water.
n. [Gr. hyponome, tunnel] (MOLLUSCA: Cephalopoda) A ventral funnel consisting of two unfused lappetlike folds; in Nautiloidea, functions in bringing oxygen to the gills in ...
hyponomic sinus
(MOLLUSCA: Cephalopoda) In Nautiloidea, a large concave sinus ventrally in the head-foot shell opening, marking the location of the hyponome.
n. [Gr. hypo, under; onym, name] A generic name not based on a type species; a provisional or temporary name.
n. [Gr. hypo, under; para, beside; typos, type] Any specimen originally used to indicate a new species but not chosen as the type specimen; see holotype, paratype.
see hypomere.
hypopharyngeal glands
(ARTHROPODA: Insecta) In bees, paired glands in the facial part of the head that open through the lateral areas of the hypopharynx; pharyngeal glands; food glands.
n. [Gr. hypo, under; pharyngx, pharynx] 1. (ARTHROPODA: Chelicerata) The chitinous plate situated on the labium in certain Acari. 2. (ARTHROPODA: Crustacea) The ...
see operculum.
pl. hypopus.
n. [Gr. hypo, under; plasis, a molding] Developmental deficiency of an organ system, organ, or tissue. hypoplastic adj..
n. [Gr. hypo, under; plax, plate] (MOLLUSCA) A long, narrow, calcareous ventral plate covering the gape between the two valves on the ventral margin, joined to the valves by ...
n. [Gr. hypo, under; pleura, side] (ARTHROPODA: Insecta) The lower plate of a divided pleuron.
n. [Gr. hypo, under; pleura, side] (ARTHROPODA: Insecta) 1. The region below the metapleuron. 2. In Diptera, the lower part of the mesepimeron.
adj. [Gr. hypo, under; aploos, onefold; eides, form] Cells or individuals with one or more chromosomes or segments deleted; see hyperploid.
see hemipneustic.
see hypoploid.
См. hypoptere.
see tegula.
n. [Gr. hypo, under; ptygma, anything folded] (NEMATA) Anterior and posterior cuticular flaps of the cloacal opening in some males; see epiptygma.
n.; pl. hypopi [Gr. hypo, under; pous, foot] (ARTHROPODA: Chelicerata) 1. In Acari, the second nymphal stage. 2. The non-feeding deutonymph of Acaridida; either active, ...
hypopygial spine
(ARTHROPODA: Insecta) The caudal spine ending of the hypopygium of some female cynipid wasps.
n. [Gr. hypo, under; pyge, rump] (ARTHROPODA: Insecta) The last ventral plate; sometimes including attached segments of the postabdomen; terminalia; genital segments ...
adj. [Gr. hypo, under; skleros, hard] (ARTHROPODA: Chelicerata) A region only partially sclerotized in mites.
n. [Gr. hypo, under; stasis, a standing] A non-allelic recessive gene, interferred with by an epistatic gene.
hypostegal coelom
(BRYOZOA: Gymnolaemata) In Cheilostomata, part of the body cavity separated from the principle body cavity of the zooid; it may communicate with the principle body cavity ...
hypostegal epithelium
(BRYOZOA: Stenolaemata) In free-walled forms, epithelium that lays down extrazooidal skeleton.
see hypostegal coelom.
hypostigmatic cell
(ARTHROPODA: Insecta) In three neuropteran Permian families, a greatly elongated cell behind the fusion of the subcosta and radius 1.
see hypostome.
hypostomal bridge
(ARTHROPODA: Insecta) 1. Union of the hypostomata of the two sides meeting in the midline below the occipital foramen which is continuous with the postocciput. 2. In ...
hypostomal carinae
(ARTHROPODA: Insecta) The margin of the proboscidial fossa of bees, which turn laterally toward the bases of the mandibles at their anterior end.
hypostomal sclerite
see intermediate sclerite.
hypostomal suture
(ARTHROPODA: Insecta) Part of the subgenal sulcus behind the mandible.
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 ...
n. [Gr. hypo, under; ostrakon, shell] 1. (ARTHROPODA: Chelicerata) In Acari, the inner cuticular layer, usually pigmented with basic dyes. 2. (MOLLUSCA: Bivalvia) a. Inner ...
n. [Gr. hypo, under; L. dim. sulcus, furrow] (CNIDARIA: Anthozoa) The groove in the siphonoglyph.
n.; pl. -ses [Gr. hypothesis, theory] A tentative proposition explaining the occurrence of a phenomenon either asserted as provisional conjecture to guide an investigation or ...
n. [Gr. hypo, under; tome, a cutting] (ARTHROPODA: Insecta) In Hymenoptera, sternum ix.
n. [Gr. hypo, under; typos, type] A specimen, other than the type, upon which a subsequent or supplementary description or figure is based; an apotype; a plesiotype.
n. pl. [Gr. hypo, under; L. valva, leaf of a folding door] (ARTHROPODA: Insecta) In Mecoptera, a bi- or trilobed subgenital plate formed from the larval ix sternum.
n. [Gr. hypo, under; zygon, pair] (ECHINODERMATA: Crinoidea) The proximal member of a syzygial pair of brachials; see epizygal.
n. [Gr. hysteros, after] (CNIDARIA) A lag in adjustment at one level in response to stress at another level such as chromosome coiling or storm damage response of corals.
n. [Gr. hysteros, after; L. dehiscere, to split open] (ARTHROPODA: Chelicerata) In Acari, dehiscence or splitting of the cuticle in the posterior part of the body; in ...
n. [Gr. hysteros, after; soma, body] (ARTHROPODA: Chelicerata) Combination of the metapodosomal and the opisthosomal segments of the body of a tick or mite; pseudotagma.
n. [Gr. hysteros, after; telos, end] (ARTHROPODA: Insecta) Retention of larval characteristics in pupa or adult; see neotony.
adj. [Gr. hysterix, porcupine; glossa, tongue] (MOLLUSCA: Gastropoda) Referring to a radula of the rhipidoglossate type with tufts of bristles.
n. [Gr. hydor, water; therme, heat] The combined effect on an organism of moisture and temperature.
That zone of the sarcomere composed of actin alone.
(CNIDARIA) The interstitial cells.
n. [Gr. ichnos, track; taxis, arrangement] A taxon based on fossilized impressions, tracks, trails, and burrows made by an animal, but not part of that animal.
adj. [Gr. ichtys, fish; phagein, to eat] Eating, or subsisting on fish.
n. [Gr. eikon, image; typos, type] A graphic reproduction of a type.
n. [Gr. eikos, to be like; typos, type] A representative specimen serving for purpose of identification, but has not been used in published literature.
The International Code of Zoological Nomenclature.
n. [Gr. idios, personal; typos, form] A specimen named by the author after comparison with the type species; see type.
n. [Gr. idios, personal; bios, life; logos, discourse] The biology of an individual organism.
n. [Gr. idios, personal; chroma, color] Nuclear chromatin thought to function as structural support for genes.
n. [Gr. idios, distinct; chroma, color; soma, body] A sex chromosome.
adj. [Gr. idios, personal; L. cuticula, cuticle] Of or pertaining to characteristics of a cuticle; produced in the cuticle such as the microtrichia of insect epicuticle. ...
n. [Gr. idios, distinct; gamos, marriage] Self-fertilization.
n. [Gr. idios, distinct; gramma, drawing] A diagrammatic representation of chromosome morphology.
adj. [Gr. idios, personal; morphe, form] (MOLLUSCA: Bivalvia) The normal form of valves; not distorted by crowding or attachment to the substrate; automorphic.
n. [Gr. idios, personal; onyma, name] State of an organ which makes it possible to receive its own distinct nomenclatorial designation, either in ontogeny, or a comparative ...
n. [Gr. idios, personal; plasma, formed or molded] All of the hereditary determinants of an organism, both nuclear and cytoplasmic; germ plasm; idiotype; see genotype.

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