Слова на букву phen-prop (732) Dictionary of invertebrate zoology
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Слова на букву phen-prop (732)

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n. [Gr. pous, foot; kystis, bladder] (MOLLUSCA: Gastropoda) A sinus in the foot.
see plasmatocyte.
n. [Gr. pous, foot; meros, part] (ARTHROPODA) An individual segment of a limb; a podite.
n. [Gr. pous, foot; ophthalmos, eye] (ARTHROPODA: Crustacea) In segmented eyestalks, one of 2 segments bearing the cornea.
n. [Gr. pous, foot; soma, body] (ARTHROPODA: Chelicerata) In Acari, the region of the body that bears the legs.
n. [Gr. pous, foot; sperma, seed] (ARTHROPODA: Chelicerata) A type of sperm transfer by the male chelicera (gonopod) of certain Acari, to the paired orifices of the female ...
n. [Gr. pous, foot] A walking leg.
poecilacanthous armature
(PLATYHELMINTHES: Cestoda) Armature with hooks on tentacles of differing sizes, shapes and arrangements with chainettes present.
n. [Gr. poikilos, various; aner, man] More than one form of male; see poecilogyny.
n. pl. [Gr. poikilos, various; kyttasos, comb] (ARTHROPODA: Insecta) A type of nest of Vespidae in which the layers of brood comb are supported by the outer covering and a ...
n. [Gr. poikilos, various; gennaein, to produce] (ARTHROPODA: Insecta) In Diptera, larval polymorphism with more than one form, some being paedogenic and others developing ...
n. [Gr. poikilos, various; gonos, progeny] 1. Development in certain invertebrate animals of the same species producing two kinds of young, although the adults are exactly ...
n. [Gr. poikilos, various; gyne, wife] (ARTHROPODA: Insecta) More than one form of female.
См. pecilonymy.
См. pogonophorans.
n.; n. pl. [Gr. pogonophoros, wearing a beard] A phylum of sedentary marine worms that are the only nonparasitic metazoans that lack a mouth, gut or anus, and are ...
n. [Gr. poikilo, varied; onyma, name] The combining of names or terms from different systems of nomenclature.
adj. [Gr. poikilos, various; osmos, impulse] Having an internal osmotic pressure varying with the environmental medium.
n; see homoiothermal.
adj. [Gr. poikilos, various; thermos, warm] Coldblooded; having a body temperature that rises or falls with the environmental temperature; ectothermal.
point mutation
Intragenic mutation in which recombination is not impaired.
see halter.
poison gland
1. Any of numerous glands secreting acid in many invertebrates. 2. (ARTHROPODA: Chelicerata) In Araneae, the poison gland. 3. (ARTHROPODA: Diplopoda) The HCN-secreting ...
poison glands
1. (ARTHROPODA: Insecta) a. In Apocritan Hymenoptera, modified accessory reproductive glands associated with the ovipositor or sting. b. In Lepidoptera larvae, epidermal ...
poison sac
see venom gland.
poison seta
1. (ANNELIDA: Polychaeta) Elongate pungent chitinous bristles that project from the parapodia, may be hollow and filled with fluid, contain retrorse spinules along the ...
polar body
A minute, functionless cell produced and discarded during the development of an oocyte.
polar cap
(MESOZOA) The eight anterior cells in the nematogen.
polar field
См. polar plate.
polar plate
(CTENOPHORA) One of two long ciliated depressions in the floor of the statocyst.
polar plates
1. (CNIDARIA) Balance organs of two narrow ciliated bands in the transverse plane. 2. (CTENOPHORA) see polar field/plate.
polar ray
see astral ray.
n. [L. polus, axis] The condition of having opposite poles or qualities.
n. [L. polus, axis] 1. A potential difference across a membrane. 2. Light that is filtered to vibrate in one plane only.
polian tubules
См. polian villi.
polian vesicles
(ECHINODERMATA) In Holothuroidea and Asteroidea, elongated sacs in the coelom that open into the ring canal and function as expansion chambers.
polian vessel
see contractile vessel.
polian villi
see contractile tubules.
pollen basket
see corbicula.
pollen brush
См. pollen comb.
pollen comb
see scopa.
pollen pocket
(ARTHROPODA: Insecta) In Hymenoptera, a reservoir for pollen beside a cell in some species of bumblebees; larvae and adults have free access to the pollen.
pollen pot
(ARTHROPODA: Insecta) In Hymenoptera, soft cerumen container used to store pollen by stingless bees; larvae do not have direct access to the pollen.
pollen rake
(ARTHROPODA: Insecta) In Hymenoptera, a comblike row of bristles at the apex of the hind tibia of a bee; a pecten.
pollen storers
(ARTHROPODA: Insecta) In Hymenoptera, bumblebees that temporarily store pollen in abandoned cocoons.
n. [L. pollex, thumb] 1. The thumb. 2. (ARTHROPODA: Insecta) In Lepidoptera, a finger-like process at the anal angle of the cucullus of Noctuidae. 3. (ARTHROPODA: ...
См. pollinigerous.
adj. [L. pollen, fine flour; ferre, to carry] Pollen bearing; formed for collecting pollen.
adj. [L. pollen, fine flour; -osus, full of] Covered with a powdery coating.
n. [Gr. polys, many; L. actum, deed] (PORIFERA) A megasclere spicule with many rays diverging from a central focus.
cercaria (PLATYHELMINTHES: Trematoda) Cercaria with a stylet and paired groups of penetration glands.
adj. [Gr. polys, many; aner, male] (ANNELIDA: Oligochaeta) Having testes in more segments than x-xi.
n. [Gr. polys, many; aner, male] Females that mate with more than one male; polyandrous adj..
see multiarticulate.
n. [Gr. polys, many; axon, axle] (PORIFERA) Spicules with several equal rays radiating from a central point.
adj. [Gr. polys, many; basis, base] 1. Having more than one base. 2. Genera originated on a number of species.
adj. [Gr. polys, many; kentron, point] Having several growth centers or centromeres.
См. polychaetes.
n.; n. pl. [Gr. polys, many; chaite, hair] The largest and very diverse class of the Phylum Annelida; commony called bristle worms, widely distributed throughout the marine ...
adj. [Gr. polys, many; chroma, color] Having many colors.
adj. [Gr. polys, many; delphys, womb] (NEMATA) Having more than four uteri.
n. [Gr. polys, many; diskos, disc] (CNIDARIA: Scyphozoa) The process of several ephyrae developing simultaneously, the most mature at the distal end; see monodisk, ...
См. polydisc.
adj. [Gr. polys, many; L. diverticulum, digression] (ANNELIDA) Referring to spermathecae with more than two diverticula.
adj. [Gr. polys, many; domos, house] Inhabiting many abodes or nests; see monodomous.
n. [Gr. polys, many; embryon, fetus] The formation of multiple embryos from a single egg; polyembryonic adj..
n. [Gr. polys, many; ethisma, habit] (ARTHROPODA: Insecta) In social insects, the division of labor among members of a colony; see age polyethism, caste polyethism.
n. [Gr. polys, many; gamein, to marry] Polygyny and/or polyandry; polygamous a; see monogamy.
n. pl. [Gr. polys, many; pan, all; gennaein, to produce] Genes that jointly, with a group of other genes, control a character; polygenic a; see oligogene.
adj. [Gr. polys, many; genos, descent] Dependent on the interaction of genes; polygenetic; see monogenic.
adj. [Gr. polys, many; L. gigerium, gizzard] (ANNELIDA) Having several gizzards.
adj. [Gr. polys, many; gone, seed] (ANNELIDA) Having more than four gonads.
adj. [Gr. polys, many; gonia, angle] Having many angles, many sides; more than 4 sided.
n. [Gr. polys, many; gennaein, to produce] The ability to produce several broods in one season; polygoneutic adj..
n. [Gr. polys, many; gyne, female] 1. The mating of a male with more than one female; see monogamy. 2. (ARTHROPODA: Insecta) In Hymenoptera, the coexistance of several to ...
see multispiral.
adj. [Gr. polys, many; hals, sea] Pertaining to brackish water of a wide range of salinities; 16 to 30 parts per thousand.
n.; pl. -dra [Gr. polys, many; hedros, side] Manysided; many angled; a solid having many faces; polyhedral adj..
adj. [Gr. polys, many; karyon, nut] Multinucleate.
adj. [Gr. polys, many; lektos, chosen] (ARTHROPODA: Insecta) In Hymenoptera, species of bees that take pollen from a wide variety of plants.
adj. [Gr. polys, many; L. loculus, small room] (ANNELIDA: Oligochaeta) Having several seminal chambers in the spermathecal diverticulum.
n. [Gr. polys, many; meros, part] A large molecule made up of several to many smaller units called monomers.
adj. [Gr. polys, many; meros, part] Gene interaction in which genes of equivalent effect intensify each others effect.
n. [Gr. polys, many; meros, part] Formation of polymers from monomers.
n. [Gr. polys, many; morphos, shape] 1. An individual within a species exhibiting a change in shape, color or structure. 2. (BRYOZOA) A zooid that differs from feeding zooids ...
См. polymorphous.
n. [Gr. polys, many; morphe, form] 1. The simultaneous occurrence of two or more distinctive and discontinuous genetic types existing in a population. 2. (ARTHROPODA: ...
adj. [Gr. polys, many; morphe, form] Having many forms or types of structure in the same species.
n. [Gr. polys, many; mys, muscle] (NEMATA) Muscle arrangement in which there are many cells between adjacent hypodermal cords; polymyarial a; see meromyarian.
adj. [Gr. polys, many; nema, thread] Chromosomes with a primarily multistranded structure, not the result of endoreduplication.
n. [Gr. polys, many; pous, foot] (CNIDARIA) Any colonial or solitary attached individual.
adj. [Gr. polys, many; palma, palm] (BRACHIOPODA) A mantle canal system with more than 4 principal canals in each mantle.
n.; pl. -ies [Gr. polys, many; pario, to beget] (CNIDARIA: Hydrozoa) Structure/tissues in which the polyps of corals and other compound forms are embedded; polypidom; ...
adj. [Gr. polys, many; phagein, to eat] Feeding on many kinds of food; polyphagia n.
see polyphagous.
n. [Gr. polys, many; phaneros, visible] The occurrence in a population of several phenotypes that are not due to genetic differences between individuals; polypheny.
polyphenol layer
A silver binding product exuded from the tip of the pore canals, formerly considered as a sublayer in the epicuticle.
adj. [Gr. polys, many; phyle, tribe] 1. Of mixed evolutionary origin, not derived from a common ancestor. 2. Pertaining to a group whose most recent common ancestor is not ...
n; see monophyletic, oligophyletic, polyphyletic.
n. [Gr. polys, many; pous, foot] (BRYOZOA) The living portions of the zooid.
polypidian bud
(BRYOZOA) A newly developing polypide of a developing zooid.
polypidian vesicle
(BRYOZOA) A polypidian bud, double-layered, with an undifferentiated internal epithelium lined central cavity.
see polypary.
См. polyplacophoran.
n. [Gr. polys, many; plax, tablet; phora, producing] A class of free-living mollusks commonly referred to as chitons or coat-of-mail shells; distinguished by having a shell ...
n. [Gr. polys, many; aploos, onefold] A condition in which the chromosome sets in the nucleus are a multiple of the normal diploid number.
adj. [Gr. polys, many; pneustikos, of breathing] (ARTHROPODA: Insecta) Having at least 8 functional spiracles on each side, including the holopneustic, peripneustic, ...
polypneustic lobes
see respiratoria, respiratory plates.
polypod larva
(ARTHROPODA: Insecta) 1. An insect larval stage found in Lepidoptera and some Hymenoptera with thoracic appendages and caterpillar-like abdominal locomotory processes ...
adj. [Gr. polys, many; pous, foot] Having many feet; see protopod, oligopod.
see polyp.
adj. [Gr. polys, many; prostates, stands before] (ANNELIDA: Oligochaeta) Having more than six prostates in three segments or over eight in two segments.
n. pl. [Gr. polys, many; L. saccharum, sugar] A carbohydrate, one molecule of which can yield by hydrolysis, many monosaccharide molecules, usually structural or storage, ...
adj. [Gr. polys, many; sapros, putrid] Referring to a body of water with high decomposition rate and very low oxygen.
adj. [Gr. polys, many; siphon, tube] (CNIDARIA: Hydrozoa) Pertaining to a hydrocaulis covered by stolons from the hydrorhiza; see monosiphonous.
adj. [Gr. polys, many; soma, body] Tissues or individuals having both diploid and polyploid cells.
n. [Gr. polys, many; soma, body] A multiribosomal structure consisting of ribosomes bound by messenger RNA; very active in protein synthesis.
adj. [Gr. polys, many; soma, body] A diploid cell with one or more chromosomes represented three or four times, instead of two.
n. [Gr. polys, many; sperma, seed] Entry of several sperm into the ovum.
adj. [Gr. polys, many; stichos, row] Arranged in many rows; multifarious.
См. polystomatous.
adj. [Gr. polys, many; stoma, mouth] 1. Having many mouths. 2. (ANNELIDA: Oligochaeta) Referring to nephridia with several nephrostomes.
polytene chromosomes
Giant chromosomes; see band.
adj. [Gr. polys, many; L. testiculus, small testicle] (ANNELIDA: Oligochaeta) Having more than two pairs of testes.
gball (ARTHROPODA: Insecta) In Hymenoptera, a chalcid gall containing more than one larval cell.
adj. [Gr. polys, many; theke, case] (ANNELIDA: Oligochaeta) Earthworm having more than one or two pair of spermathecae per segment; see monothecal.
adj. [Gr. polys, many; tithenai, to place] Referring to a classification with each member of a group having the majority of a set of characters; see monothetic.
adj. [Gr. polys, many; topos, place] Occurring in several geographical locations.
adj. [Gr. polys, many; trophein, to feed] 1. Having nutrition supplied from more than one organism or source; see oligotrophic. 2. Having many trophi.
polytrophic ovariole
(ARTHROPODA: Insecta) An ovariole in which trophocytes accompany each oocyte and are enclosed within the follicle; a polytrophic egg tube; see meroistic ovariole.
adj. [Gr. polys, many, tropikos, a turning] (ARTHROPODA: Insecta) Visiting many kinds of flowers for nectar; see monotropic, oligotropic.
adj. [Gr. polys, many; typos, type] A taxon containing subordinate units.
see multivoltine.
adj. [Gr. polys, many; xenos, guest] The rearing of one or more individuals of one species in association with many other known species of organisms; see dixenic, axenic, ...
См. polyzoan.
see Bryozoa.
see zoarium.
adj. [Gr. polys, many; zoon, animal] (PLATYHELMINTHES: Cestoda) Strobila consisting of more than one proglottid.
adj. [L. pondus, weight] Of great weight; large; huge, bulky.
n. [L. pons, bridge] A bridge; structure connecting two parts.
pons cerebralis
see protocerebral bridge.
n. [L. populus, people] A group of individuals, especially with reference to numbers and statistics.
population density
The number of a group of individuals as to unit area or volume.
adj. [Gr. poros, channel] Bearing pores.
adj. [L. porca, ridge between two furrows] With longitudinal ridges and furrows.
adj. [It. porcellana, procelain] Resembling porcelain; an enameled-like surface; a nacreous luster.
См. porcelaneous.
См. porcelaneous.
n. [Gr. poros, channel] A minute opening or orifice; ostium.
pore canals
1. (ARTHROPODA: Insecta) Flat or ribbon-like twisted channels of the procuticle, running through it perpendicularly to its surface. 2. (ARTHROPODA: Crustacea) In Ostracoda, ...
pore cells
see porocytes.
pore diaphragm
(PORIFERA) The closure of the porocyte.
pore plates
1. (ARTHROPODA: Insecta) In the soft scale Towmeyella parvicornis , groups of invaginated, biocular pores on the dorsal surface of the derm; see sensilla placodea. 2. ...
pore space
The insterstice between soil particles.
pore-chambers positive taxis
The tendency to be attracted to a source of stimulus.
positive tropism
См. positive taxis.
(ARTHROPODA: Crustacea) In Decapoda, giant nerve fibers in crayfish that supply the deep parts of the abdominal flexors and are responsible for escape reaction; see ...
After death; post-mortem changes.
post-pygidial gland
(ARTHROPODA: Insecta) In Formicidae, a gland associated with the membrane between abdominal terga 7 and 8, sometimes large; function unknown; see pygidial glands.
n. [L. post, after; abdomen, belly] 1. (ARTHROPODA) The usually slender, modified posterior segment of the abdomen of Crustacea and Insecta. 2. (ARTHROPODA: Chelicerata) ...
postacrostichal bristles
see acrostichal bristles.
adj. [L. post, after; ala, wing] (ARTHROPODA: Insecta) Behind the wings.
postalar arm
(ARTHROPODA: Insecta) An extension behind the wing in many insects, connecting the postnotum to the epimeron; postalar bridge; postalare; see prealar arm.
postalar bridge
see postalar arm.
postalar bristles
(ARTHROPODA: Insecta) In Diptera, bristles on the postalar callus.
postalar callus
(ARTHROPODA: Insecta) In Diptera, the prominent posterodorsal angle of the scutum.
postalar declivity
see postalar wall.
postalar tail
(NEMATODA: Secernentea) That segment of the tail posterior to the leptoderan bursa or caudal alae.
postalar wall
(ARTHROPODA: Insecta) In Diptera, the ventrolateral surface below the postalar ridge; postalar declivity.
see postalar arm.
postanal plate
see telson.
postantennal organ
(ARTHROPODA: Insecta) In some Collembola, a variously shaped structure (ring-like, rosette, or complex), immediately behind the antennal bases; comprised of sense-cell and ...
adj. [L. post, after; apex, the tip] (MOLLUSCA: Bivalvia) Referring to lateral teeth situated behind the umbo or apex.
adj. [L. post, after; Gr. basis, a pedestal] Behind; beyond; near the base.
postbascillary eyes
(ARTHROPODA: Chelicerata) In Arachnida, the anterior median eyes that have the retinal nuclei behind the light-sensitive rods; see prebascillary eyes.
postcerebral glands
see cephalic salivary glands.
n. [L. post, after; clypeus, shield] (ARTHROPODA: Insecta) In some insects, the posterior or upper division of the clypeus differentiated by a suture from the anteclypeus, ...
n. [L. post, after; colon, colon] (ARTHROPODA: Chelicerata) Region of the gut between the colon and the rectum in certain mites.
n. [L. post, after; cornu, horn] (ARTHROPODA: Insecta) In Hymenoptera, a single, supra-anal, sclerotized caudal spine of Symphyta larvae.
n. [L. post, after; corpus, body] (NEMATA) The posterior part of the esophagus in which the esophageal gland cells are found.
postcoxal bridge
(ARTHROPODA: Insecta) The post coxal part of the thoracic pleuron, often united with the sternum behind the coxa.
adj. [L. post, after; Gr. embryon, fetus] Pertaining to the life stage succeeding the embryonic.
see surpedal area.
adv. [L. post, after; -ad, toward] Directed backward, as opposed to anteriad.
adj. [L. posterior, latter] 1. Situated behind; behind the axis. 2. (MOLLUSCA: Bivalvia) Direction along the major axis in which the anus faces and the exhalant current ...
posterior apophysis
(ARTHROPODA: Insecta) In female Lepidoptera, sclerotized, paired apodemes of the 8th abdominal segment, extending cephalad and serving for muscle attachment; apophyses ...
posterior area
(MOLLUSCA: Bivalvia) Area on the surface of the valve posterior to the posterior ridge.
posterior bulb
see esophageal bulb.
posterior callosity
see postalar callus.
posterior cardiac lobe
see intestinal region.
posterior carina
see intestinal region.
posterior cell
(ARTHROPODA: Insecta) In Diptera, one of the wing cells extending to the hind margin, between the third and sixth longitudinal veins.
posterior cephalic foramen
see foramen magnum.
posterior cribellum
(ARTHROPODA: Chelicerata) In Arachnida, the posterolateral spinnerets in Stenochilidae.
posterior cross vein
(ARTHROPODA: Insecta) In Diptera, a wing cross vein at the apex of the discal cell.
posterior flange
(MOLLUSCA: Bivalvia) In oysters, the flange posterior to the left valve separated from the main body of the valve by the posterior radial groove.
posterior gastric pit
(ARTHROPODA: Crustacea) In Decapoda, one of two small dorsal depressions midline on the exterior of carapace identifying the point of insertion of the stomach muscle.
posterior lateral
tooth (MOLLUSCA: Bivalvia) In heterodonts, the lateral tooth situated posterior to the beaks and ligament.
posterior notch
(MOLLUSCA) An indentation in the outer lip near the suture.
posterior orbit
(ARTHROPODA: Insecta) In Diptera, part of the head behind the eyes.
posterior respiratory process
(ARTHROPODA: Insecta) In Diptera, among Syrphidae larvae, caudal respiratory organ composed of two fused tubes.
posterior ridge
(MOLLUSCA: Bivalvia) A ridge passing over or originating near the umbo and running diagonally towards the posteroventral area of the valve.
posterior sinus
(MOLLUSCA: Polyplacophora) A recess in the posterior median line of a tail valve, formed by the tegmentum or in some forms by the articulamentum.
posterior slope
(MOLLUSCA: Bivalvia) The surface sector running posteroventrally from the umbo of the valve.
posterior spiracle
(ARTHROPODA: Insecta) Spiracles on the caudal segment or the most caudal pair of segments.
posterior spiracular plate
(ARTHROPODA: Insecta) In Diptera, the flattened tip of each tube that bears the posterior spiracles of Syrphidae larvae.
posterior stigmatal tubercle
(ARTHROPODA: Insecta) In caterpillars, tubercles on the thoracic and abdominal segment.
posterior tentorial arms
(ARTHROPODA: Insecta) The apodeme extending anteriad from the posterior tentorial pits of the head.
posterior tooth
(ARTHROPODA: Crustacea) In Decapoda, a midline carapace tooth between the posterior margin and the marginal groove.
adj. [L. posterus, following; bis, twice; Gr. prostates, stands before] (ANNELIDA: Oligochaeta) With reference to male terminalia, prostates in segment xix after loss of a ...
posterodorsal margin
(MOLLUSCA: Bivalvia) The margin of the dorsal part of the shell posterior to the beaks.
adj. [L. posterus, following; latus, side] Posteriorly and toward the side.
postesophageal commissure
(ARTHROPODA: Insecta) The commissure that joins the tritocerebral lobes of the brain and passes beneath the stomodeum; tritocerebral commissure.
postesophageal loop
(SIPUNCULA) An extra loop in the foregut of species of Sipunculus and some Xenosiphon.
См. postfroenum.
see postscutellum.
n. [L. post, after; furca, fork] (ARTHROPODA: Insecta) That portion of the frons posterior to the antennary base line.
postfrontal ridge
(ARTHROPODA: Insecta) In Culicidae, an apodeme externally differentiated by the postfrontal suture.
postfrontal suture
(ARTHROPODA: Insecta) Facial sutures present occurring above the lateral ocelli and extending laterad of the antennal bases. postfurca n. [L. post, after; furca, fork] ...
n.; pl. -ae [L. post, after; gena, cheek] (ARTHROPODA: Insecta) A sclerite on the posterior lateral surface of the head; postgenal adj..
posthumeral bristle
(ARTHROPODA: Insecta) In Diptera, one or more bristle(s) on the anterolateral surface of the mesonotum; near the inner edge of the humeral callus.
see apopore.
see postmentum.
postlarval stage
(ARTHROPODA: Crustacea) A developmental stage after completion of the megalopal or equivalent metamorphosis, differentiated by appearance of adult characters.
postmandibular area
(BRYOZOA) Membranous part of the frontal wall on which the mandibular muscles insert.
postmarginal vein
(ARTHROPODA: Insecta) The fore wing vein along the anterior margin, beyond where the stigmal vein arises.
n. [L. post, after; mentum, chin] (ARTHROPODA: Insecta) A primary division of the labium; the basal portion, proximad of the labial suture.
postnodal cross veins
(ARTHROPODA: Insecta) A series of short wing cross veins behind the costal margin, between the nodus and stigma.
postnotal plate
see metapostnotum, mesopostnotum.
n.; pl. -ta [L. post, after; Gr. notum, back] (ARTHROPODA: Insecta) The phragma-bearing plate in the dorsum of a pterothoracic segment, originating from the acrotergite of ...
postoccipital ridge
(ARTHROPODA: Insecta) The internal aspect of the postoccipital suture.
postoccipital suture
(ARTHROPODA: Insecta) The transverse suture on the head immediately posterior to the occipital suture, and ending at the posterior tentorial pit on either side and along ...
n. [L. post, after; occiput, back of head] (ARTHROPODA: Insecta) The extreme narrow posterior rim of the head, between the postoccipital suture and the foramen magnum.
postocellar area
(ARTHROPODA: Insecta) In Hymenoptera, that part on the dorsal aspect of the head bounded by the ocellar and vertical furrows and the caudal margin of the head.
n. [L. pre, before; adaptatus, fitted] The possession of the necessary genotypic or phenotypic properties that permit a shift into a new niche or habitat.
prealar arm
(ARTHROPODA: Insecta) An extension in front of the wings connecting the prescutum with the pleuron; prealar bridge; prealare; see postalar arm.
prealar callus
(ARTHROPODA: Insecta) In Diptera, a projection situated just above the root of the wing.
see prealar arm.
preanal region
see remigium.
preanal ring
(ARTHROPODA: Diplopoda) Post-segmental ring ending trunk; usually has a tail, anal valves and scales; forms the telson.
adj. [L. prae, before; apex, tip] Before the apex.
preapical bristle
(ARTHROPODA: Insecta) In Diptera, a bristle on the outer border of the tibia, below the apex.
preapical gland
see phasmid.
adj. [L. prae, before; axis, axle] On the anterior border or before the axis.
preaxillary excision
(ARTHROPODA: Insecta) In hind wings of Hymenoptera, a second notch of the apex of the first anal fold, just anterior of the first anal vein, in addition to the axillary ...
prebascillary eyes
(ARTHROPODA: Chelicerata) In Arachnida, the anterior lateral, posterior lateral and posterior median eyes that have the retinal nuclei in front of the light-sensitive ...
n. [L. prae, before; basis, base] (ARTHROPODA: Diplopoda) In the gnathochilarium, a narrow transverse sclerite, just basal to the mentum.
n. [L. prae, before; cardo, hinge] (ARTHROPODA: Diplopoda) The distal joint of a two piece cardo.
adj. [L. prae, before; Gr. chele, claw; keras, horn] (ARTHROPODA: Chelicerata) Anterior to the chelicerae; the acron and the three or four embryological segments anterior to ...
n. [L. prae, before; L. cibarius, pertaining to food] (ARTHROPODA: Insecta) A canal formed by the union of the epipharynx and the hypopharynx, providing a connecting link ...
n. [L. praeceps, head long] A specific antibody developed in response to foreign protein in the blood.
precocious stages
1. Premature development. 2. An organ that appears earlier in the development of a species than in the development of other related species.
n. [L. prae, before; connubium, marriage] The coming together of animals before mating season.
n. [L. prae, before; cornu, horn] (ARTHROPODA: Insecta) In Diptera larvae, the cornua of the cephalo-basipharynx.
n. [L. prae, before; costa, rib] (ARTHROPODA: Insecta) In some primitive forms, the small first wing vein.
n. [L. prae, before; coxa, hip] 1. (ARTHROPODA: Crustacea) When present, the segment of the protopod proximal to the coxa; pleuropod. 2. (ARTHROPODA: Insecta) see ...
precoxal bridge
(ARTHROPODA: Insecta) That part of the thoracic pleuron anterior to the trochantin, usually continuous with the episternum and the basisternum; precoxale.
n. [L. prae, before; currare, to run] 1. Element or substance that preceeds the final one. 2. Ancestor or ancestral part; see anlage, rudiment.
precursory cell
A mother cell or metrocyte.
См. predacious.
adj. [L. preda, prey] Having the characteristics of a predator.
n. [L. praedator, plunderer] An animal that kills or renders its prey insensible in order to mostly or entirely consume it.
predictive value
The capability of a classification to make predictions on newly employed characters or newly discovered taxa.
see ischiopodite.

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