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4(3). Prosternal epimera absent; anterior tarsus of male simple . . . . . . Erchomus Motschulsky

 

        Prosternal epimera present; anterior tarsus of male dilated . . . . .Tachinomorphus Kraatz

 

5 (2). Abdomen without paratergites; head and pronotum densely pubescent . . . . . . . . . .

         . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Sepedaphilus Gistel

 

         Abdomen with paratergites; head and pronotum not densely pubescent . . . . . . . . . .

          . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tachyporus Gravenhorst

 

6(1). Last segment of maxillary palpus subulate .. . . . . . . . . . . . . . .Mycetoporus Mannerheim

 

        Last segment of maxillary palpus not subulate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 7

 

7 (6). Last segment of labial palpus wider than penultimate. . . . . . . . . . . . .  .Bolitobius Leach

 

        Last segment of labial palpus not wider than penultimate. . . . . . . . . . . . . . . . . . . . . . .. 8

 

8(7). Last segment of labial palpus not narrower than penultimate . . . . . . .Lordithon Thomson

 

        Last segment of labial pal pus narrower than penultimate. . . . . . . . . . . Bryoporus Kraatz

 

ACKNOWLEDGMENTS

 

       We extend our thanks to T. W. Fisher, Gordon Gordh, Gary S. Olton, Robert E. Orth, John Pinto, Sergei V. Triapitsyn, Saul Frommer, Mary Ann Walsh and other colleagues of the University of California at Riverside for helpful advice, criticism and other favors and to Hugh B. Leech of the California Academy of Sciences for loan of material and other favors through the years.  Special thanks to Milton Campbell for securing our final collection of Staphylinidae.

 

LITERATURE CITED

 

ARNET, Ross.  1961. The beetles of the United States (a manual for identification). Part II, fasc.

     15, pp. 233~310, 31 figs. Washington: The Catholic University of America Press.

 

BLACKWELDER, RICHARD E..  1939. A generic revision of the staphylinid beetles of the tribe

     Paederini. Proc. U. S. Nat. Mus. 81:93-125.

 

BLATCHLEY, WILLIS S..  1910. The Coleoptera or beetles (exclusive of the Ryncophora) known

     to occur in Indiana with bibliography and descriptions of new species. Ind. Dept. Geol. and

     Natur. Res. Bull. 1:1-1386.

 

BRADLEY, JAMES CHESTER.  1930. A manual of the genera of the beetles of America north

     of Mexico. Keys for the determination of the families, subfamilies, tribes, and genera of

     Coleoptera with a synoptic list of genera and higher groups, 360 pp. Daw, IlIiston & Co.:

     Ithaca.

 

CAMPBELL, MILTON.  1968. A revision of the new world Micropeplinae (Coleoptera:

     Staphylinidae) with are. arrangement of the world species. Can. En. 100: 225-67, 34 figs.

 

     1969. A revision of the new world Oxyporinae (Coleoptera: Staphylinidae). Canad. Ent. 

      101: 225-68, 52 figs.

 

COIFFAIT, HENRI.  1962. Les Leptotyphlitae (Col. Staphylinidae) de Californie. Rev. Fr. Ent.

     19:154-66, 58 figs.

 

HAMMOND, P. M..  1970. Some problematic MotschuIsky species of Staphylinidae (Col.). Ent.

     Mo. Mag. 106: 67-70.

 

HATCH, MELVILLE H..  1957. The beetles of the Pacific Northwest. Part II. Staphyliniformia.

     Univ. Wash. Pubc. Bioi. 16:i-x, 1-384, 37 pl.

 

HERMAN, LEE H., JR. 1970. Phylogeny and reclassification of the genera of the rove beetle

     subfamily Oxytelininae of the world (Coleoptera: Staphylinidae). Bull. Amer. Mus. Natur.

     Hist. 142:343- 454, 73 figs.