Part 151

Tongue: an indefinite term, applied usually to the coiled mouth structure of Lepidoptera; the lapping organ of flies; the ligula of bees and wasps and, sometimes also to the hypopharynx of other insects.

Tooth: an acute angulation: a short pointed process from an appendage or margin.

Topomorph -ic: a geographic form, variety or subspecies of a widely distributed species: developed by local environment.

Topotype: is a specimen collected in the exact locality whence the original type was obtained.

Tornal: relating to or concerning the tornus.

Tornus: in Lepidoptera, the junction of the termen and dorsum of wing: = hind or anal angle; q.v.

Torose: swelling into knots or protuberances.

Torpid: lying motionless by reason of cold or other natural conditions that unfavorably affect the organism.

Torqueate: with a ring or collar.

Torquillus: = rotula.

Tortilis: twisted.

Tortulose-us: hump-backed; a surface with a few large elevations: beaded; moniliform.

Tortuose -us: irregularly curved and bent; snake-like.

Tortuous: = Tortuose.

Torulus: the basal socket joint of the antenna upon which the organ is articulated for movement in all directions.

Totidem: in all parts; entirely.

T.P. line: transverse posterior line; crossing the primaries of certain Lepidoptera, two-thirds or more from base: = post medial line.

Trabecula: rounded, lobular masses of the procerebrum, from which arise the stalks bearing the mushroom bodies: a paired movable appendage in front of the antennae in certain bird-lice.

Trachea -ae: the spirally ringed breathing tube or tubes of insects.

Tracheal gills: the flattened or hair-like processes in aquatic larvae through which oxygen is absorbed from the water.

Tracheary: relating to or composed of tracheae.

Tracheate: supplied with trachea: a general term applied to all articulates that breathe by means of spiracular openings into a system of tubular structures that extend to all parts of the body.

Tracheation: the arrangement or system of distribution of trachea.

Tracheoles: the capillary trachea of the adult as they develop in masses in the larva: very small, slender tracheae.

Transection: a cut across, at right angles to the body: transverse section.

Transition zone: is the transcontinental belt in which the austral and boreal elements overlap: it is divided into a humid or Alleghanian area; a western arid area; and a Pacific Coast humid area: all of which see.

Transitory: lasting for a short time only.

Translucent: semi-transparent; admitting the passage of light but not of vision.