n. [L. tergum, back; porus, pore]
In Tubuliporina, a type of kenozooecium on the back side of a colony, having a polygonal aperture.
n.; pl. terga [L. tergum, back]
The dorsal surface of any body segment.
n. [L. terminus, boundary]
The outer, or distal margin of the wing.
adj. [L. terminus, boundary, end]
At the end; forming the end of a series or part; at the extreme end.
n. [Gr. tetra, four; pous, foot]
Having 2 pair of legs; see bipod.
adj. [Gr. tetra, four; pteron, wing]
Having 4 wings.
adj. [Gr. tetra, four; soma, body]
Polysomic cells with one chromosome represented 4 times in a normal diploid; 2n+2.
n. [Gr. tetra, four; thyridion, window]
A cysticercoid of Mesocestoides which has a solid body and a scolex not surrounded by special membranes. ...
n. [Gr. tetra, four; axon, axis]
A spicule of 4 equal and similar rays meeting at equal angles; tetractine; quadriradiate; tetraxonid adj..
adj. [Gr. thalassa, sea; philos, loving]
Inhabiting or dwelling in the sea; pelagic; thalassic.
n. [Gr. thallos, young shoot]
The body or colony of a compound animal.
adj. [Gr. thamnos, shrub; philos, loving]
Inhabiting thickets or dense shrubbery.
n. [Gr. thanatos, death; koinos, common]
An assemblage of fossils comprised of the remains of organisms brought together after death; see biocenosis.
n. [Gr. thanatos, death]
Feigning death; letisimulation.
n.; pl. thecae [Gr. theke, case]
1. A sheath or sac-like covering or structure for an organ or organisms, as proboscis, tubes, shells, pupa or larvae.
2. (ANNELIDA: ...
n. [Gr. thelykos, feminine]
In some female Decapoda, an external pocket on the ventral side of the thorax, functioning as a seminal receptacle.
adj. [Gr. thelys, female; genes, producing]
Producing mostly or only female offspring; arrhenogenous.
n. [Gr. thelys, female; tokos, offspring]
A type of parthenogenesis in which unfertilized eggs develop into females; thelytoica; thelyotokous a; see arrenotoky, deuterotoky, ...
theory of probabilities
A mathematical theory used by taxonomists, whereby they assume that no two individuals will simultaneously have the same combination of characters as those of a given species; ...
n. [Gr. therme, heat; klinein, to slope]
In the strata of rapidly changing temperatures in lakes, the narrow dividing stratum between the epilimnion and hypolimnion.
n. [Gr. therme, heat; philos, loving]
Living at high temperatures; hot springs fauna.
n. [Gr. therme, heat; phobos, hate]
An organism that lives at low tempertures.
n. [Gr. therme, heat; L. recipere, to receive]
A sensory receptor that reacts to temperature stimuli.
n. [Gr. therme, heat; taxis, arrangement]
A taxis in which heat is the response initiating stimulus; regulation of body temperature. thesocytes n. pl. [Gr. thesis, deposit; ...
n. [A.S. thicce, thick]
1; see inflation.
2. Measurement from the inner to outer shell surface.
n.; pl. taxes [Gr. thigma, touch; taxis, arrangement]
The taxis of contact; stereotaxis. a. Positive thigmotaxis: toward the contact. b. Negative thigmotaxis: away from the ...
n. [Gr. thigma, touch; tropos, turn]
Tropism in which direction is determined by contact with a solid body; stereotropism.
A Y-shaped sclerite of the wing, with a flexor muscle inserted into the crotch of the Y and usually articulating with the posterior notal process and a ...
adj. [Gr. thorax, chest]
Associated with the thorax.
The first three ganglia of the ventral nerve cord, one in each thoracic segment, controlling the locomotory organs.
The second of three regions of the embryonic trunk; the future locomotor center.
In some Diptera, one of three membraneous lobes in the region of the wing base appearing to be derived from the posterior margin of the scutellum; see ...
n. [Gr. thorax, chest; meros, part]
A thoracic segment.
n. [Gr. thorax, chest; pous foot]
Any appendage of the thoracic somite; a cormopod; see phyllopod, maxilliped, pereopod.
n.; pl. thoraxes, thoraces [Gr. thorax, chest]
1. (ARTHROPODA: Chelicerata)
In Arachnida, fused with the head to form the cephalothorax of spiders.
2. (ARTHROPODA: ...
n. [A.S. thraed, twist]
1. A fine linear surface elevation.
2. (MOLLUSCA: Bivalvia)
A narrow elevation on the shell surface.
3. (MOLLUSCA: Gastropoda)
The silky fibers of ...
n. [Gr. thylax, sack]
An external gall-like cyst in the abdomen of the host containing the Dryinidae parasitic larva.
n. [Gr. thylax, sack; genes, producing]
A chemical produced by parasites that cause hypertrophy of host tissue.
n; pl. -ia [Gr. dim. thyris, window]
1. A small whitish spot in the wings of Neuroptera, Hymenoptera and Trichoptera.
2. In ichneumonid Hymenoptera, a ...
n. [Gr. thyra, oblong shield]
In Diptera, a shield-shaped plate on the posterior wall of the beak.
n.; pl. -iae [L. tibia, shin]
1. (ARTHROPODA: Chelicerata)
The fifth segment of a spider leg, between the patella and metatarsus.
2. (ARTHROPODA: Insecta)
The fourth ...
A strigil or scraper.
A large spine usually located on the distal end of the tibia.
In Anoplura Pediculus , a delicate modification of the tibia as a holdfast against the powerful claw of the tarsus.
In Collembola Sminthurides , a sac-like swelling and an enlarged hair occurring near the distal ends of the tibiotarsus of the third pair of legs.
n. [L. tibia, shin; Gr. tarsos, sole of foot]
Fused tibia and tarsus; the tibiotarsal segment.
Tiny, 9 spherical swellings on the inner wall of the ring canal that have been reported to produce amebocytes.
adj. [L. tenctorius, of dyeing]
Of or pertaining to color, i.e., staining.
n. [A.S. tind, spike]
Any slender, pointed, projecting part.
n. [F. tissu, tissue]
A layer or group of cells of a particular type, or at most a few types, with intercellular material of essentially a particular type.
Tissues appropriated from animals and maintained or grown in vitro for more than 24 hours.
n. pl.; sing. titilla [L. titillo, tickle]
Small projections on the distal part of the protrusile gubernaculum.
n. [L. titillo, tickle]
A terminal, small process (spines or small plates) at the distal extremity of the aedeagus.
n. [Gr. tokos, birth; pherein, to carry]
adj. [Gr. tokos, birth; sperma, seed]
Direct transfer of sperm between male and female.
n. [Gr. tokos, birth; sperma, seed]
1. (ARTHROPODA: Chelicerata)
A type of sperm transfer by the male chelicera (gonopod), to the female vagina; see podospermia.
n. [Gr. tokos, birth; stoma, mouth]
In Acari, the female genital aperture.
n. [L. tomentum, stuffing of wool]
Covered with closely matted scale-like hair or spines on the body or appendages that cannot be separated; downy; tomentose adj..
White, opalescent part of the adductor muscle that reacts slowly, but can hold for long periods of time; catch muscle.
n.pl [Gr. tonos, stretching; L. dim. fibra, fiber]
Fine connective fibrils extending from the ends of the skeletal muscles into the cuticle.
n. [Gr. tonos, stretching]
1. The normal, maintained nerve impulse traffic.
2. The normal prolonged steady contracture of muscle fibers; tonic adj..
n. [Gr. topos, place; gamos, marriage; demos, the people]
Individuals inhabiting a particular geographic locality that form a deme.
n. [Gr. topos, place; morphe, form]
An environmental morphologic variant; topomorphic adj..
n. [Gr. topos, place; onoma, name]
The name of a location thought to be the place of origin of a plant or animal.
n. [Gr. topos, place; typos, type]
A specimen collected at the original type-locality.
n.; pl. -mae [Gr. tormos, socket]
1. In Diptera, sclerotic processes between the labrum and clypeus.
2. In Scarabaeoidae larvae, heavily chitinized ...
n. [Gr. tormos, socket; genes, producing]
An epidermal cell associated with a seta that secretes the cuticle of the socket and bounds the receptor ...
n. [L. tornatus, rounded with a lathe]
A diactinal monaxon, lance-headed at each end.
adj. [L. torus, elevation]
A swelling into knobs; cylindrical and swollen at intervals; torous.
adj. [L. torpidus, to be numb]
Dormant; inactive; see aestivation, hibernation.
adj. [L. torquatus, with a necklace]
Having a ring or collar.
n. [L. torquere, to twist]
1. Spiral bending; twisting.
2. (MOLLUSCA: Gastropoda)
The theory in ancestral gastropods that a 180-degree counterclockwise twisting occurred ...
adj. [Gr. torquere, to twist]
Twisting; winding; irregularly curved.
adj. [L. torulus, little bulge]
Having knob-like swellings; moniliform.
n.; pl. tori [L. torus, swelling]
1. A blunt, rounded, ridge or protuberance.
2. (ANNELIDA: Polychaeta)
Low ridges provided with rows of acicular hooks or minute setae ...
adj. [L. totus, all; potens, capable]
Said of isolated blastomeres capable of becoming complete embryos.
n. [L. totus, all; mons, mountain]
The mount of a whole organism for microscopic study.
n. [Gr. toxon, bow]
A bow-shaped diactinal microsclere.
n. [Gr. toxikon, poison; gnathos, jaw]
The forcipulate poison fangs.
n. [Gr. toxikon, poison; logos, discourse]
The science of poisons.
n. [Gr. toxikon, poison]
A poisonous substance in the secretions or excretions of a parasite.
n. [Gr. toxikon, poison]
A disease caused by the action of a toxin.
n. [Gr. toxon, bow; glossa, tongue]
Having a radula always enclosed in the radular sac; marginal teeth harpoon-shaped, filled with venom and ...
n. [Gr. toxikon, poison; eidos, form]
A toxin released from its toxic properties, but not from its antigenic properties.
n.; pl. -lae [L. trabecula, little beam]
1. A small bar, rod, bundle of fibers, or septum together with other trabeculae which form part of the framework of various organs; ...
adj. [L. trabecula, small beam]
Used to describe seminal vesicles that develop as connective tissue proliferations from a septum that have ...
n.; pl. tracheae [L. trachia, windpipe]
1. The windpipe.
2. (ARTHROPODA: Chelicerata)
For Arachnida, see tube trachae, sieve trachea.
3. (ARTHROPODA: Insecta)
The larger ...
In aquatic larvae and some aquatic pupae, filiform, lamellate structures supplied with trachae and tracheoles, usually borne on the abdomen; see ...
A system of cuticle-line tube opening to the outside through spiracles, functioning in respiration.
n. [L. trachia, windpipe; Gr. blastos, bud]
Cells derived from the epidermal cells lining the trachea, that give rise to the tracheoles.
n. [L. dim. trachia, windpipe]
The fine intracelluar terminal branches of the respiratory tubes; tracheolar adj..
adj. [Gr. trachys, rough; chroma, color]
n. [L. tractus, region]
1. An area, region or parts of a system, as a bundle of nerve fibers between parts of the central nervous system.
A fascicular ...
In Acari, a long, conical hyaline protuberance of the articulation between the body of a chelicera, and its movable jaw; oncophysis.
n. [Gr. tragos, goat]
In Diptera, a somewhat elaborate lobe on the rim of the pinna of a laticorn trumpet of some culicid pupae.
n. [L. trans-, across; Gr. ad, makes collective nouns]
Closely related organisms separated by an environmental barrier.
n. [L. trans-, across; coxa, hip]
A term used instead of coxa in some groups.
adj. [L. trans-, across; currens, running]
1. Extending transversely.
2. (MOLLUSCA: Gastropoda)
Passing continuously around whorls crossing growth lines.
n. [L. trans-, across; secare, to cut]
A cross section or profile of an area for study, as with organisms and/or vegetation.
n. [L. trans-, across; secare, to cut]
Cut across or transversely; a transverse section.
In males, that part of the testis follicle in which the spermatids develop into spermatozoa; known as spermiogenesis; see maturation zone.
adj. [L. trans-, across; ire, to go]
A passing phenomenon; of short duration.
Polymorphism existing in a breeding population during the period when an allele is being replaced by a superior one; see balanced polymorphism.
n. [L. trans-, across; locus, place]
The shift of a segment of a chromosome to another chromosome, not changing the total number of genes present.
adj. [L. trans-, across; lucere, to shine]
Allowing the passage of light, but not necessarily transparent; semitransparent.
n. [L. trans-, across; mittere, to send]
1. Horizontal: the transfer of an infectious agent from one organism to another.
2. Vertical: transmission from one generation to ...
transposed hinge condition
A condition of teeth usually found in the hinge of one valve being found on the opposite one.
1. In many orders, a transverse suture connecting the lateral margins behind the anterior notal wing process, dividing the scutum into an anterior and ...
adj. [L. trans-, across; stadium, stage]
The retention of microorganisms from one stage of the host to the next; may be part or all of the host\'s life cycle.
n.; pl. -lae [L. trans-, across; stilla, drop]
In Lepidoptera, a transverse bar, or variously shaped process, connecting dorso-proximal angles of the ...
adj. [L. trans-, across; vertere, to turn]
Crossing at right angles to the longitudinal axis; lying across or between.
transverse band of crochets
In larva, crochets being arranged transversely or across the longitudinal axis of the body in a single uniserial or multiserial band, or in two such ...
A form of asexual reproduction by division of an organism at right angles to the long axis; see binary fission.
In Cirripedia, the thin walled, normal to longitudinal septum, parallel to basis, dividing the parietal tubes into a series of cells.
A circular groove or arc whose plane is perpendicular to the longitudinal axis.
In Diptera, a suture across the middle of the mesonotum of some species; usually incomplete in the center of the notum; in Tipulidae it is V-shaped.
One of a pair of walls separating individual zooids in a linear series; perpendicular to direction of growth.
n. [Gr. trapezion, small table]
A four-sided figure, having no two sides parallel; trapeziform.
n. [Gr. trapezion, small table; eidos, shape]
A plane four-sided figure in which two sides are parallel and two are not. trapezoidal, trapeziform adj..
n.; pl. tremata [Gr. trema, hole]
An orifice in the outer wall of some shells, excretory in function; may occur singly or in a series.
n. [Gr. trema, hole; eidos, form]
A class of Platyhelminthes, commonly call flukes; all are endoparasitic flatworms.
adj. [OF. trenchier, to cut]
Having a sharp edge.
n. [Gr. trypanon, borer]
Part of the eversible pharynx containing chitinized teeth anteriorly, especially Syllidae.
n. [Gr. treis, three; aktis, ray]
A microsclere spicule with three rays; see regular triact, saggital triact.
adj. [Gr. treis, three; aktis, ray]
Having a three-pointed or rayed spicule; see diactinal, tetractinal, monactinal.
n. [Gr. treis, three; -ad, forms collective noun]
An arrangement of three; a trinity.
n. [Gr. triaina, trident]
A tetraxonid spicule with three rays shorter than the fourth.
n. [F. a culling]
The process of grading.
n. [L. triangulus, having three angles]
In Odonata, a small triangular cell or group of cells near the base of the wing; discoidal triangle; cardinal ...
In Hymenoptera, the second of three pairs of movable plates associated with the sting; see quadrate plates, oblong plates.
adj. [L. tres, three; aulos, pipe]
In opisthobranch hermaphroditic snails, the female part having two separate openings and the male part one; see ...
A type of symmetry such as biradial- or bilateral symmetry, with three axes known as sagittal, longitudinal, and transverse.
n. [Gr. tries, three; axon, axle]
A spicule with three axes.
n. [L. tribus, tribe]
A taxonomic category containing a group intermediate between the genus and the subfamily; names of tribes end in -ini.
In Strigeiudea, a glandular, pad-like organ behind the acetabulum.
n. [Gr. trix, hair]
Hair-like siliceous spicule.
n.; pl. -ria [Gr. thrix, hair; bothros, pit]
A compound structure of many groups consisting of a small cavity (bothridium) and variously shaped ...
n. pl. [Gr. thrix, hair; branchia, gill]
A gill with a series of filamentous lateral branches arising from the main stem or branchial axis.
adj. [Gr. thrix, hair; keras, horn]
Pertaining to cercaria having a tail provided with conspicuous spines or bristles.
n. pl. [Gr. thrix, hair; dragma, sheaf]
In Axinellidae ( Tragosia ), raphides grouped into bundles.
n. [Gr. thrix, hair; genes, producing]
An epidermal cell that secretes the cuticle of the seta or peg, the scolopale and the pore tubules.
adj. [Gr. thrix, hair; eidos, form]
Formed like a hair.
n. pl. [Gr. thrix, hair]
1. (ARTHROPODA: Insecta)
Modified tufts or hair on certain myrmecophilous and non-myrmecophilous insects that aid in the dissemination of ...
n. [Gr. thrix, hair; pherein, to bear]
A saclike structure or cavity from which setae emerge.
n. [Gr. thrix, hair; poros, channel]
A pore in the cuticle through which a sensory hair or bristle is formed.
n. pl. [Gr. thrix, hair]
In Neuroptera, thickenings of the wing margin bearing several hairs; a single trichosor between each pair of vein-endings in ...
adj. [Gr. tricha, in three parts; tome, a cutting]
Divided into three parts; three-forked.
n. [Gr. treis, three; chros, color]
The condition of having three color forms in different individuals of the same species.
adj. [Gr. treis, three; costa, rib]
Having three ribs or ridges.
adj. [Gr. treis, three; krepis, base]
A triaxonid desma.
adj. [Gr. treis, three; cuspis, a point]
Divided into three cusps or points.
adj. [Gr. treis, three; daktylos, finger]
Pertaining to an appendage, ambulacrum, or claw with three ungues; see monodactyl, bidactyl.
adj. [L. tres, three; dens, tooth]
Having three teeth; three-pronged; tridentate adj..
adj. [L. tres, three; findere, to split]
Having three clefts, parts, or branches.
A three-branched peripheral motor nerve connected to the retractor muscle, esophagus, and along the tentacle sheath to the direct nerve.
adj. [L. tres, three; furca, fork]
Having three branches or forks; trichotomous.
n. pl. [Gr. treis, three; glykys, sweet]
Esters of fatty acids with glycerin that form fats and oils.
adj. [Gr. treis, three; gnathion, jaw]
Having mandibles and two pair of maxillae, such as Chilopoda, Symphyla and Insecta; see dignathan.
adj. [Gr. treis, three; gonia, angle]
Pertaining to, or in the form of a triangle.
n. [Gr. treis, three; gonos, offspring]
The production of three broods in one season.
adj. [L. tres, three; labium, lip]
Having three lips.
adj. [L. tres, three; latus, side]
adj. [Gr. treis, three; lobos, lobe]
Bearing three lobes.
adj. [L. tres, three; loculus, small place]
With three cavities or cells.
adj. [Gr. treis, three; morphe, form]
Having three distinct forms in one individual, as certain hydrozoan colonies.
An extension of the binominal system of nomenclature consisting of three words: the generic name, the specific name, and the subspecific name, together constituting the ...
Crochets of larvae with proximal ends in a single row, but distal ends of three alternating lengths; see ordinal.
adj. [L. tres, three; partitus, divided]
Divided into three parts, divisions or segments.
adj. [L. tres, three; pecten, comb]
Having three rows of comb-like branches.
n. [L. tres, three; plus, more]
Three successive nucleotide base pairs that code for an amino acid.
adj. [Gr. triploos, threefold; blastos, bud]
Derived from three embryonic germinal layers: ectoderm, endoderm and mesoderm.
adj. [Gr. triploos, threefold]
A cell or individual having three haploid chromosome sets in their nuclei; a form of polyploidy.
adj. [L. triquetrus, three sided]
Having three angles or arms; triangular in section.
(s) adj. [L. tres, three; radius, spoke of wheel]
1. Having three radiating process.
Spicules having the three rays somewhat in the same plane; see sagittal ...
n. [Gr. tritos, third; L. cerebrum, brain]
The posterior (third) small part of an arthropod brain that gives rise to nerves that innervate the labium, the ...
n. [Gr. tritos, third; nymphe, young woman]
In Acari, the third stage nymph.
n. [Gr. tritos, third; sternon, chest]
In Mesostigmata, a secondary, ventral, bristlelike sensory organ just behind the gnathosoma.
v.t. [L. tritum, rub to pieces]
To rub or grind to a fine powder; masticate; pulverize.
n. [L. tres, three; ungula, claw]
First-instar larva of some hypermetamorphic Neuroptera, Coleoptera, Hymenoptera, and the Strepsiptera (triungulinid), ...
An obsolete designation by Linnaeus for the specific name; vernacular name.
n. [L. trivium, crossroads]
Collectively, the three rays of a sea star farthest from the madreporite; see bivium.
n. [L. tres, three; It. volta, time]
Having three annual broods, especially in the silkworms of Bombycidae.
adj. [Gr. treis, three; xenos, guest]
The rearing of one or more individuals of one species in association with three known species of organisms; see axenic, dixenic, ...
n. [Gr. trochos, wheel]
A band of cilia found on trocophores and related larvae.
Anterior ciliated disc functioning in locomotion and/or food ingestion.
adj. [Gr. trochos, wheel; pous, foot]
Refers to a posterior coxae having an articulation of a ball and socket joint; see pagiopodous.
n. [Gr. dim. trochanter, runner]
In Hymenoptera, the proximal end of the femur; sometimes appearing as a second segment of the trochanter.
n. [Gr. trochanter, runner]
A segment or segments of an insect or acarine leg that articulate basally with the coxa and distally with the femur; a pivot or ...
In Collembola, a group of short setae on the trochanter.
n. [Gr. trochanter, runner]
Any small intercalated sclerite of an insect appendage. a. The basal segment of the trochanter when two-jointed. b. A ...
adj. [Gr. trochos, wheel; forma, shape]
1. Shaped like a top.
2. (MOLLUSCA: Gastropoda)
In Trochidae, a flat-sided conical shell, without a highly acute spire and rather ...
n. [Gr. trochilia, pulley]
A pulley-like structure, short, circular, compressed and contracted in the middle of the circumference.
adj. [Gr. trochos, wheel; lophos, crest]
A lophophore with a simple disk around the mouth, bearing usually a single row of unpaired filamentary appendages, ...
n. [Gr. trochos, wheel; phora, bearing]
An invertebrate free-swimming larva found in many groups, marine turbellarians, nemerteans, brachiopods, phoronids, bryozoans, ...
n.; pl. trochi [Gr. trochos, wheel]
The inner, anterior circlet of coronal cilia along the margin of the apical band; cingulum.
n. [Gr. trogle, hole; bios, life]
A cave dwelling organism; troglobite.
adj. [Gr. trogle, hole; dyein, to enter]
Living underground only.
n. [Gr. trogle, hole; philein, to love]
2. (ANNELIDA: Oligochaeta)
Many species of earthworms are referred to in this manner, however, they are not obligatory ...
n. [Gr. trogle, hole; xenos, guest]
1. A cave guest.
2. Sometimes used to characterize organisms that do not complete all of their life cycle in caves.
adj. [Gr. tropis, keel]
Resembling a keel; cariniform.
n. [Gr. trophe, food; allaxis, exchange]
The mutual or unilateral exchange of alimentary canal liquid, from the mouth or anus, among colony members ...
n. [Gr. trophe, food; amnion, membrane around the fetus]
An envelope surrounding the embryonic mass in the polyembryonic ova of mainly parasitic ...
n. pl.; sing. trophus [Gr. trophe, food]
The mouth parts, especially of insects and barnacles, collectively.
The mastacatory apparatus of the ...
In telotrophic ovarioles, slender chords connecting the nurse cells to the eggs.
In Apis, an egg that is fed to the colony members, usually degenerate and nonviable.
In Siphunculata (Anoplura), a pouch opening off the cibarium housing three closely compressed stylets, with only the anterior end exposed, functioning ...
A form of symbiosis between a social insect and another organism; tended by the social insect for the sake of the food or secretions they derive from them; see trophallaxis, ...
n. [Gr. dim. trophe, food]
In Hymenoptera, the first larval stage of some Formicidae.
n. [Gr. dim. trophe, food; bios, life; ont, one who]
An organism living in a social species nest, or cared for and protected by a social species in ...
n. [Gr. trophe, food; biosis, manner of life]
A form of symbiosis in which there is a mutual exchange of food; trophallaxis; trophobiotic a; see trophic symbiosis.
n. pl. [Gr. trophe, food; kytos, container]
1. Cells that provide nutritive material.
2. (ARTHROPODA: Insecta)
Cells of the fat body of the embryo.
n. [Gr. trophe, food; diskos, disc]
In the female gonophore, endodermal tissue that nourishes sperm or ova.
n. [Gr. trophe, food; genes, producing]
In social insects, caste difference determined by nutritional mechanism.
In social insects, the environment from which the colony gains food.
n. [Gr. trophe, food; rhine, rasp]
In Hymenoptera, two striated plates located within the mouth of Myrmeciinae larvae that grind their food pellets.
n. [Gr. trophe, food; soma, body]
1. (CNIDARIA: Hydrozoa)
All of the asexual structures of a polyp or polypoid hydrozoan colony; see gonosome.
A food ...
n. [Gr. trophe, food; taxis, arrangement]
A response to the stimulation of food; see telotaxis, klinotaxis.
n. [Gr. trophe, food; thylax, sack]
In Hymenoptera Formicidae, a specialized pouch of Pseudomyrmecinae larvae located on the ventral part of the thorax ...
n. [Gr. tropus, keel]
1. (ARTHROPODA: Crustacea)
In Ostracods, a heavy chitinous (or two unfused rods) connecting the zygum to the sternix and pastinum.
2. (NEMATODA: ...
n. [Gr. tropos, turn]
A movement, orientation or locomotion of a motile organism in response to a stimulus. a. Positive tropism: toward the stimulus. b. Negative ...