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22(21). Antennal fossae closer to mandibular fossae than to each other. . . . . . . . .Paederinae

 

           Antennal fossae about as close to each other as to mandibular fossae. . . . . Diochinae

 

23 (21) . Anterior angle of pronotum produced anteriorly beyond anterior lateral angle of

             prosternum margin of pronotum apparently single, hypomeron not or

             incompletely margined along inner side . . . . . . . . . . . . . . . . . . . .  . . . . . Quediinae

 

             Anterior angle of pronotum not so produced-margin of pronotum not so produced;

             margin or pronotum double, hypomeron completely margined along  inner side. . . . .24

 

24 (23) . Lateral marginal lines of pronotum separate throughout. . . . . .. . . .   . Xanthopyginae

 

            Lateral marginal lines of pronotum united behind anterior angles. . . . . . . . . . . . . . . .25

 

25 (24) . Antennal fossae closer to eyes than to each other. . . . . . . . . . . . .. . . Staphylininae

 

             Antennal fossae closer to each other than to eyes. . . . . . . . . .. . . . Platyprosopinae

 

26 (19). Antenna with segments three through eleven filamentous. . . . . . . . . . . . . . . . . . . . .27

 

            Antenna not filamentous . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . . . . . . 28

 

27(26). Anterior tarsus very slender . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Habrocerinae

 

          Anterior tarsus broadly dilated. . . . . . . . . . . . . . . . . . . .. . . . . . . . . .  . Trichophyinae

 

28 (26) . Elytral epipleuron delimited by a carina. . . . . . . . . . . . . . . . . . .. . . . . . . . . .. . . . . 29

 

             Elytral epipleuron not delimited by a carina. . . . . .  . . . .. . . . . . . . . Phloeocharinae

 

29 (28). Pronotal epimeron delimited. by a distinct suture. . . . . . . . . . . . .  . . . . Olisthaerinae

 

      Pronotal epimeron not delimited by a suture. . . . . . . . . . . .   .  . . . . . . Tachyporinae

 

 

       This key to the subfamilies is modified from that of Moore (1964) with his corrections (1967, 1973). His paper has some illustrations and a discussion of each subfamily.

 

Key to the Genera of Steniane

 

1. Eye very large, occupying entire side of the head; seventh abdominal segment with

     short spines or short brushes of hair. . . . . . . . . . . . . . . . . . . ..   . . . . . . .  Stenus Latreille

 

   Eye not occupying entire side of head; seventh abdominal segment with a tuft of long

     fine hair each side. . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . .. . Dianous Leach

 

The Genera of Aleocharinae

 

       In both species and genera, members of this difficult subfamily comprise at least two-fifths of all Staphylinidae. There are no satisfactory keys to the genera of America north of Mexico.

 

Key to the Genera of Micropeplinae

 

1. Pronotum and elytra distinctly costate; pseudepipleura well developed, delimited by

    distinct humeral costa. . . . .. . .. . . . . . . . . . . . . . . . . .. . . . . . .. . . . .Micropepius Latreille

 

    Pronotum without distinct raised costae elytra strongly deflexed at sides, with slightly

     raised discal ridges, but lacking humeral costae and pseudepipleura . . . . .Kalissus LeConte

 

Oxyporinae

 

       A single genus, Oxyporus Fabritius, comprises this subfamily. It was revised by Campbell  (1969).