A REVISION OF THE GENUSTACHINUS(COLEOPTERA: STAPHYLINIDAE) OF NORTH AND CENTRAL AMERICA

Abstract

The species of the genus Tachinus (Staphylinidae: Tachyporinae) of North and Central America are revised. Forty-four species are recognized, of which eight are described as new; eight species names are placed in synonymy. The subgenera Drymoporus Thomson and Porodrymus Rey are placed in synonymy with Tachinus and the genus is divided into 17 species groups based on an examination of both the Nearctic and the Palearctic fauna. The distribution of each species is mapped and the male genitalia, the male and female eighth abdominal sternites and tergites, and the male seventh sternite are illustrated for every species. A neotype is designated for T. fumipennis Say, and lectotypes are designated for all the North and Central American species of Tachinus described by Gravenhorst, Erichson, Mäklin, Horn, and Sharp. Diagnostic keys for males and females are included. A brief discussion of the nomenclatural history of the genus, of collecting techniques, and of the major diagnostic characters is included.

Late-glacial Coleoptera and the paleoclimate at Hirtles, Nova Scotia

“…It is a transcontinental species ranging from Labrador to Alaska (Campbell, 1973(Campbell, , 1988, although the subspecies T. jacuticus ullrichi is known only from eastern North America (Fig. 2).…”

“…It occurs from Newfoundland south to Massachu setts and Ohio and west to Terrace, British Columbia. It ex tends south along the Coast Range to central California and south in the rockies to Colorado (Campbell, 1973(Campbell, , 1988.…”

How far have we come: 170 years of research on Canadian Coleoptera

“…Despite this, Campbell et al (1978) noted that the only comprehensive treatments of beetles in Canada were Lindroth's work on Carabidae, Bright (1976) on the Scolytinae, and Barron (1971) on the Trogositidae. Th is summary actually understated the research which had been conducted since investigators such as John Milton Campbell (1973Campbell ( , 1976 had revised Tachinus and Sepidophilus (Staphylinidae) in North and Central America; Edward C. Becker (1971Becker ( , 1974 had revised the Nearctic species of Agriotes and Athous (Elateridae); W.J. Brown (1934Brown ( , 1935aBrown ( , 1935bBrown ( , 1935cBrown ( , 1936aBrown ( , 1936bBrown ( , 1936cBrown ( , 1936d had revised the genus Dalopius and substantial portions of the genus Ctenicera (senus lato), then known as Ludius (Elateridae); Ales Smetana (1971) had revised the Quediini (Staphylinidae) in North America; Henry F. Howden (1964Howden ( , 1968 had revised the Geotrupidae and the Trichiinae of North and Central America; J.B. Wallis (1961) had surveyed the Cicindelinae of Canada; and A.R.…”

Paleozoic rocks on the Alaska Peninsula: A section in <i>The United States Geological Survey in Alaska: Accomplishments during 1978</i>

“…However, a consistent ecological picture emerges from the small species list from the site ( (Lindroth, 1966). T. apterus has been found on Betula nana (dwarf birch) and flowers of wild celery (Campbell, 1973) but almost certainly inhabits decaying plant and animal material.…”