104 EXPLANATION OF TERMS 



Policate: a tibia produced inwardly into a short, bent spine or thumb. 



Politus: smooth, shiny, polished. 



Pollen: a dusty or pruinose surface covering which is easily rubbed off; used 



mostly in Dipt era. 

 Pollen-plate: a polished area margined by hair, on the outer face of the tibia 



in bees. 



Pollex: a thumb: the stout fixed spur at inside of tip of tibia. 

 Pollicatus: = policate ; q. v. 



Polliniferous: formed for collecting pollen; pollen bearing. 

 Pollinigerous: = polliniferous ; q. v. 

 Pollinose: covered with a yellow, pollen-like dust. 

 Poly-: many, much. 



Polyandry: where a female mates with more than one male. 

 Polychromatic: many colored. 



Polydomous: applied to ants when one colony has several nests. 

 Polyembryony: the production of several embryos from a single egg, as in 



some Chalcids. 



Polygamy: where a male mates with more than one female. 

 Polygonal: with many angles. 



Polygoneutism: the power to produce several broods in one season. 

 Polymorpha: the claviform and serricorn Colcoptcra, as a whole. 

 Polymorphic -ous: occurring in several forms; differing in sex, in season, in 



locality or without apparent reason : undergoing several changes, and in 



this sense applied to insects with a complete metamorphosis. 

 Polynephria: applied to insects with many urinary (Malpighian) tubes. 

 Polyphagous: eating many kinds of food. 



Polyphyletic: derived or descended from several stems or sources. 

 Polypodous: having many feet, and thus specifically applied to the Myria- 



poda, and to the larvae of Lcpidoptcra and saw-flies, in contradistinction to 



footless and hexapodous larvae. 

 Ponderable: that which may be weighed. 

 Pone: behind (the middle). 

 Ponticulus: =frenulum; q. v. 

 Porcate: marked with raised longitudinal lines. 

 Pore: any small, round opening on the surface. 

 Poriferous: closely set with deep pittings or punctures. 

 Porose-us: with little round openings on the surface. 

 Porrect: stretched out forward: straightly prominent. 

 Post-: behind or after. 

 Post-alar callosities: rounded processes at the posterior lateral margin of 



the dorsum, in Diptera. 

 Post-alar callus: in Diptera, a rounded swelling between the root of the 



wing and the scutellum. 

 Post-alar membrane: the strip of membrane connecting the squamae with the 



scutellum. 



Postal vein: in Hymenoptera, = costa (Comst.). 

 Post-annellus: in Hymenoptera, the 4th joint of antenna and 2d of flagellum. 



