USED IN ENTOMOLOGY. 139 



or more than one sclerite and specifically of the abdomen : in Odonata and 



Orthoptcra, applies to thorax as well. 



Termen: the outer margin of a wing, between apex and hind or anal angle. 

 Terminal: situated at the tip or extremity; opposed to basal. 

 Terminal line: in Lcpidoptcra, runs along the outer margin of the wings. 

 Terminal space: the area between the s. t. line and terminal line in certain 



Lepidoptera. 



Terminology: the technical nomenclature of any science. 

 Termitarium: a nest, natural or artificial, or a colony of Termites. 

 Terrestrial: living on or in the land; opposed to aquatic. 

 Tessellated: checkered; more or less like a chess-board. 

 Test: the secretionary covering of Coc cider, and especially such as are waxy, 



horny or glassy. 

 Testaceous: dull yellow brown; tile colored [pale cadmium yellow + burnt 



sienna]. 

 Testes: the tubular structures in the male, in which the production of 



spermatogonia, and often also of later stages in the development of the 



sperm takes place. 

 Testicular follicles: in the larva, are those structures which in the adult 



form the tubes composing the testes ; in the adult applied also to the tubes 



forming the testes. 



Testudinate -us: resembling the shell of a tortoise. 

 Tetra-: four: a combining form. 

 Tetrachaetas: applied to those Dipt era in which the mouth structures consist 



of four longitudinal blades or piercing structures. 

 Tetradactyle: with four fingers or finger-like processes. 

 Tetragonal: having four sides or angles: quadrangular. 

 Tetramera: applied to Colcoptcra with four-jointed tarsi. 

 Tetramerous: having four-jointed tarsi. 

 Tetrapoda: applied to those butterflies in which the anterior legs are 



atrophied in whole or in part. 

 Tetraptera: a term proposed for all insects with four naked, membranous 



reticulated wings. 



Thamnophilous: applied to species living in thickets or dense shrubbery. 

 Theca: a case or covering: specifically applied to the fleshy covering of the 



fly-mouth ; to the cases of the Trichopterous larvre ; to the lower piece of 



the male genitalia in Homoptcra; and to the outer covering of the pupa. 

 Thelyotoky: parthenogenetic reproduction when the progeny are all females: 



see Arrhenotoky and Deuterotoky. 

 Thigh: see femur. 



Thigmotactic: contact-loving: applied to species that tend to live close to- 

 gether or in touch, one with the other. 



Third longitudinal vein: in Diptcra (Will.) ; -= radius 5 (Comst.). 

 Third posterior cell: in Diptcra, = 2d medial 2 (Comst.). 

 Third submarginal cross-nervure: in Hymcnoptcra (Nort.) ; - radius 4 



(Comst.). 

 Thoracic: belonging or attached to the thorax. 



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