[CLICK on underlined categories
to redirect]
Next Page►
|
-11- 2(1). Fourth tarsomere simple. . .
. . . . . . . . .
. . . . . . . . . . . . . . . . . . . . .
.Echiaster Erichson Fourth tarsomere bilobed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . 3 3 (2). Prosternum conate with the
edges of the hypomera . . . . . . . . . . . . . . . . . . . . . . . . . .. 4 Prosternum not conate with the edges of the hypomera . . . . . . . . . . . . . Astenus Dejean 4(3). Pronotum narrowly prolonged
at the middle in front. . . .
. . . . . . . . . . Stamnoderus Sharp Pronotum not distinctly prolonged in
front. . . . . . . . . . . . . . . . . .
. . . Stilicopsis Sachse 5(1). Last segment of maxillary
palpus truncate, compressed and pubescent. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . Paederus Fabricius Last segment of maxillary palpus narrow, elongate and
glabrous. . . . .
. . . . . . . . . . . . .. 6 6 (5). Antenna anteriorly flexile,
first segment as long as next three together, sinuate at apex anteriorly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . 7 Antenna not anteriorly flexile, first segment usually
shorter than next three together, sinuate at apex posteriorly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. .. . . . . . .. 10 7(6). Elytra with a pleural fold. . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . 8 Elytra without a pleural fold. . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . 9 8(7). Marginal carina of pronotum
interrupted at middle.. . . . .
. . . . . . . . . . .Lissobiops Casey Marginal carina of pronotum entire. . . . . . . . . . . . . . . . . . . . . . .Homaeotarus Hochhuth 9(7). Labrum bidentate . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . Ochthephilum Stephens Labrum edentate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . Biocrypta Casey 10(6). Neck one-fifth to
one-eighth as wide as head. . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . 11 Neck one-fourth or more as wide as head. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 16 11(10). Gular sutures separate..
... ... ... . . . .
. . . . . . . . . . . . . ... . . . .. . .Scopaeus Erichson Gular sutures united at least basally . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . 12 12(11). Head coarsely umbilicately
or elongately punctured, without dense ground sculpture. .13 Head not or indistinctly umbilicately punctured, with
dense ground sculpture . . . .
. . .15 13(12). Head very densely
punctured 14 Head not very densely punctured. . . .. ... . . . . . . . . . . . . . ... ... .Acrostilicus Hubbard 14(13). Head and pronotum very
differently punctured. . . . .
. . . . . . . . .. . .Pachystilicus Casey Head and pronotum very similarly punctured. . . . . .
. . . . . . .
. . . . . . . . Rugilus Leach 15(12). Elytra with short stiff
erect bristles. . . . . . . . .
. . . . . . . . . . . . . . .Megastilicus Casey Elytra with normal pubescence. . . . . . . . . . . . .
. . . . . . . . . .. . . . . . Stilicolina Casey 16(10). Sculpture of head and
pronotum dense ... . . . . . . . . . . . . . . . . . . . . . . . . .
. . ... ... 17 Sculpture of head and pronotum sparse. . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . .. 23 17(16). Antenna slender,
verticilate from third segment. . . . . . . . . . . . . . . Thinocharis Kraatz Antenna not slender, not verticilate . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . .18 18(17). Disc of head without
umbilicate punctures. . . . . . . . .
. . . . . . .. . . . Lithocharis Dejean Disc of head with umbilicate punctures. . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .. 19 19(18). Labrum with median tooth
or prominence .. . .. .. . . . .
. . . . . . . . . . . . . . . . . . .. . ... 20 Labrum without median tooth or prominence. . . . . . .
. . . . . . . . . . .. . . . . . . . . . . .. 21 20(19). Umbilicate punctures of
head sparse and not strong . . . Achenomorphus Motschulsky Umbilicate punctures of head dense and strong. . . .. . . . .
. . . . . . . Stilomedon Sharp 21(19). Gular sutures united in
great part. . . . . .
. . . . . . . . . . . . . . . . . . . . .Neomedon Sharp Gular sutures separate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . 22 22(21). Gular sutures distinctly
diverging from before the middle to apex. . . . . . . Sunius Curtis Gular sutures most approximate along the middle.. . . . . . . . . . . . . . .Medon Stephens 23(16). Anterior
tarsus slender . . . .
. . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . .
. 24 |
Anterior tarsus dilated . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . .. . 25