THE GENERA OF THE SUBFAMILIES PSEUDOPSINAE AND PROTEININAE OF AMERICA NORTH OF MEXICO (COLEOPTERA:STAPHYLINIDAE) ' Ian Moore and E. F. Legner 2 This is one of a series of papers giving keys to the genera of the Staphylinidae of America north of Mexico, a full description of each genus with remarks on distribution and ecology, as well as an illustration of a member of each genus. Pseudopsinae This subfamily contains the single genus Pseudopsis. It is a very generalized form, having few outstanding morphological characters to distinguish it. However, the combination of the strong diagonal impressions on the abdominal tergites and the longitudinally carinate pronotum and elytra will readily separate its members from other Nearctic staphylinids. Only four other genera of the Nearctic Staphylinidae have carinate pronota and elytra (Micropeplus, Zalobuis, Asemobius and Thoracophorus) . None of these has the abdomen impressed in the manner of Pseudopsis. Pseudopsis Newman Form. -Small, linear, subfusiform. Elytra and pronotum longitudinally costate. Head. -Head a little smaller than pronotum, oval, slightly narrowed behind the eyes, with a distinct neck and a nuchal constriction above. Eyes small, not very prominent. Antennae somewhat incrassate, their fossae located anterior to the eys under a slight ridge. Labrum widest apically, the angles rounded, the apex gently arcuate, with several large setae laterally. Mandibles slender, pointed, each with two large pointed teeth internally. Labial palpi four-segmented; first segment short; second elongate, curved, much widened apically; third as long as second, oval, a little wider than second, almost as wide as long; fourth almost as long as second, very slender, very slightly narrowed from base to apex. Inner lobe of maxilla long, slender, hooked at apex, with a row of long spines internally. Outer lobe wider than inner, widest near apex, with a dense brush of curved cilia at tip. Ligula of two diverging rounded lobes. Labial palpi three-segmented; first segment longest and widest, three times as long as wide; second about half as long and a little narrower than first; third a little narrower but somewhat longer than second, almost the same size and shape as the fourth segment of the maxillary palpi. Gular sutures most approximate anteriorly, thence widely diverging to base. Infraorbital carina very faint. Thorax. -Pronotum transverse, the disc longitudinally carinate. Prosternum well-developed, its process short and acute. Lateral prosternal sutures distinct. Prosternal epimera very narrow, delimited from the hypomera by a suture at which point the hypomera are much enlarged mesally. Trochantin narrow. Mesosternum short, its process short and acute. Metasternum moderate, its process short, acute, delimited by a carina. Elytra quadrate, longitudinally costate; epipleura delimited by a carina. Scutellum 1 Accepted for publication: March 26, 1974. 2 Staff Research Associate and Professor of Biological Control, Division of Biological Control, University of California, Riverside. Ent News, 85:13-18, 1974 13
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