GLOSSARY OF THE TERMS USED IN 

 ENTO:\IOLOGY. 



Abdomen. The posterior region of the insect body. 



Abiogenesis. Spontaneous generation. 



Abraded. Scraped or rubbed. 



AcALYPTRATA. Those muscid flies in which aUilix' are absent or 

 rudimentary. 



Aculeate. Prickly; armed with a sting. 



Acuminate. Tapering to a long point. 



Addorsal. Close to but not on the middle of the dorsum. 



Adephagous. Belonging to the .Xdcphaga; pentamerous, predatory, 

 terrestrial beetles with filiform aiitcmui'. 



Adpressed. Contiguous or prcs.scd to. 



Agamic. Reproducing without union with a male. 



Agamogenesis. Reproduction without fertilization by a male; 

 parthenogenesis. 



Agglutinate. Glued together in a mass. 



Aggregated. Crowded together. 



Ala (pi. Al.e). Wing or wings. 



Alary. Relating to wings. 



Alate. Winged. 



Alternation of Generations. Periodic production of partheno- 

 genetic females in a species that occurs in both sexes. These females 

 produce both sexes. Examples occur in Cynipidse and in some 

 Homoptera. 



Alul.e. a pair of membranous scales above the halteres, behind the 

 root of the wing, one above or before the other; the anterior attached 

 to the wing and moving with it, the posterior fastened to the thorax 

 and stationary. Occm-s in Diptera. Synonyms calyptra; squama; 

 squamula; lobulus; axillary lobe; aileron; scale; tegula?. In Cole- 

 optera, a membranous appendage of the elytra which prevents 

 dislocation. 



Alulet. The lobe at basal portion of wing in Diptera. 



Ametabola. Insects not having obvious metamorphosis, the larvae 

 resembling the adult and the pupa? being active. 



Amnion. The inner of the two membranes enclosing the embryo. 



Amphimixis. The mingling of the germ plasm of two individuals. 



Ampulla. In Orthoptera, an extensile sac between the head and 

 prothorax, used by the young in escaping from the ootheca, and later 

 in moulting. In Heteroptera, a blister-like enlargement at the middle 

 of the anterior margin of the prothorax. 



Anal. Pertaining or attached to the last segment of the abdomen. 



Anal angle. That angle on the secondaries nearest the end of the 

 abdomen when the wings are expanded. The angle between the inner 

 and outer margin of any wing. 



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