Badister (Baudia) parviceps Ball 1959

Badister (Baudia) parviceps
In addition to the characters presented in the key, this species may be distinguished from its congeners by its relatively narrow head, more elongate pronotum with somewhat wider base, and the lines of microsculpture sufficiently far apart so that a meshwork pattern is quite evident, especially near the median longitudinal impression. Iridescence of the pronotum is therefore weaker than in the other North American members of the subgenus. The male genitalia are more like those of grandiceps than of other members of the subgenus.
Description. — Type, male. Crusoe Lake, Wayne Co.[unty], N.[ew] Y.[ork], VI.14.33, (C. R. Crosby), [Cornell University Coll.].
Male. Length 3.95 mm., width 1.65 mm.; elytra rufo-piceous in basal 1/2, piceous in apical portion. Microsculpture : approximately uniformly isodiametric over entire dorsal surface, shining, vertex not iridescent ; pronotum, as described in diagnosis above.
Head 1.78 times wider than long, 0.21 times in width the total length, 0.97 times the length of the pronotum, 1.04 times wider than left elytron. Apices of mandibles truncate. Eyes convex, moderate in size.
Pronotum as in fig. 132. Elytra 1.40 times wider than pronotum, 1.57 times longer than wide.
Male genitalia: as in figs. 156a-e.
Variation. — Data on variation in size and in diagnostically useful proportions are presented in tables 69-75. The pronotum varies from slightly to moderately transverse, the sides from moderately to weakly incurved posteriorly. The male genitalia do not exhibit apreciable variation in features of diagnostic importance.
Distribution. — This species ranges from Washington, D. C. and Connecticut, on the east coast, westward through eastern Ontario and
New York to Minnesota and Kansas, in the Great Plains.
Paratypes : thirteen males and twenty-three females collected in the following localities.
Connecticut: Litchfield County; Canaan, Cornwall. District of Columbia: " D. C." Illinois: "111." Champaign County; Urbana. Indiana: "Vigo County." Iowa : " la." Kansas : " Douglas County " ; Lawrence. Maryland : " Md." County not determined ; Plummers Is. Minnesota : " Olmsted County." New York: Cayuga County; Howland Is. County not determined; Meadowdale. Ontario : " E. Ont."
These specimens are in the collections of the following institutions : Academy of Natural Sciences of Philadelphia; Bureau of Plant Industry, Harrisburg, Pennsylvania; California Academy of Sciences; Cornell University ; Department of Agriculture, Ottawa, Ontario ; Museum of Comparative Zoology ; Purdue University ( Blatchley Coll. ) ; University of Kansas ; University of Minnesota.

Badister parviceps is a species of ground beetle in the family Carabidae. It is found in North America.