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-548- Keys to the Genera of the Staphylinidae of America North of Mexico Exclusive of the Aleocharinae (Coleoptera: Staphylinidae) INTRODUCTION THE
PURPOSE OF THIS WORK is to bring together for entomologists and
non-specialists alike a set of easily usable keys to the genera of the
Staphylinidae of America north of Mexico based on characters that are readily
visible in typical museum specimens without dissection or other special
treatment. Phylogeny is reflected in at least some of the keys. Only three other publications have
attempted to deal with this subject. The first two, LeConte and Horn (1883) and Bradley (1930), are long out of date. In a more
recent compilation Arnett (1961) admitted to
little experience with the group. Some of the keys do appear in recent
American literature. However, the material is scattered in works that tend to
feature small sections of the family. These papers are mentioned in the notes
following the keys as further aids to identification. The arrangement of this work is, first
a key to the subfamilies, then a key to the genera of each subfamily given in
the order in which the subfamilies appear in the subfamily key, and finally a
bibliography. Names of tribes, where used, are presented in parentheses in
the body of the keys to genera. Tribal names end in -ini. KEY TO THE SUBFAMILIES OF THE STAPHYLINIDAE
OF
AMERICA NORTH OF MEXICO
[ CLICK on underlined categories to redirect:] 1. Antenna inserted on surface of head between anterior margin
of eyes; last segment of maxillary palpus subulate . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . .. 2 Antenna inserted at front or side margin of
head. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 3 2(1). Posterior coxae small,
separated. .. . ... .. . ... .. . . . . . . . . . . . . . .. . .
. . . . . . .Steninae Posterior coxae large, contiguous. . . . .
. . . . . . . . . . . . . . . . . .. . . . . . . Aleocharinae 3(1). Antenna 9-segmented;
posterior coxae separated . . . . . . . . . . . . . . . . .. .Micropeplinae Antenna 10- or II-segmented; posterior
coxae contiguous. . . . . . . . . . . . . . . . . . . . . . .. 4 4 (3) . Last segment of labial
palpus large, semilunar. . . . . . . . . . . . . . . . . . . . . . Oxyporinae Last segment of labial palpus not
semilunar. . . . . . . . . . . . . . . . . . . .
. . . . . . .
. . . . .. 5 5 (4) . Head with a pair of ocelli
between posterior margins of eyes. . . . . . . . . . . . . . .. . . . 6 Head without ocelli . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . 7 |