[CLICK on underlined categories to redirect]
◄ Next Page►
-554- 4(2). Head hardly narrowed behind
eyes .. . . . . . . . . . . . . . . . . ... .. . . .. . .Syntomium Curtis Head strongly narrowed behind eyes. . . . . . . . . . . .
. . . .. . . . . . . . . . Deleaster Erichson 5(1).
Elytra dehiscent (inner apical angles strongly rounded) . . . . . . . . . . . . . . . . .
. . . . . . . 6 Elytra not dehiscent (inner apical angles rectangular) .
. . . . . . . . . . . . . . . . . . . . . . . . 8 6(5).
Anterior tibia without spines on the outer edge . . . . . . . . . . . . . Thinobius Kiessenwetter Anterior tibia with spines on the
outer edge. . . . . . . . . . . . . . . .. . . .
. . . . . . . . . . . . .. 7 7(6). Middle coxae separate. . . .
. . . . . . . . . . . . . . . . . . . . . . . .. . .Platystethus
Mannerheim Middle coxae contiguous. . . . . . . . . . . . . . . . . . . . . . . . . .
. . .. . . . . . . .Bledius Leach 8(5). Anterior tibia without spines
on the outer edge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.. 9 Anterior tibia with spines on the outer edge. . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .. 10 9(8). Middle coxae contiguous. . .
. . . . . . . . . . . . . . . . . . .
. . . . . . . . . .Aploderus Stephens Middle coxae separate. . . . .. . . . . . . . . . . . . . . . . .
. . . . . . . . . . Oxytelus Gravenhorst 10 (8).
Body glabrous except for a few long setae. . . . . . . . . . . . . . . . . . .
Apocellus Erichson Body pubescent. . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 11 11(10). Last segment of maxillary
palpus conical, apex abruptly narrowed and pointed. . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . Ochthephilus
Mulsant and Rey Last segment of maxillary palpus
cylindrical, subulate . . . .. . . . . . . Carpelimus Leach Herman (1970) published an extensive generic
revision of the Oxytelinae of the world with
entirely new phylogenetically based keys to the genera. We have not used his
keys here, because some of the characters are difficult or impossible to
observe in typical museum specimens. In one example, he used the pattern of
sculpture on the scutellum, which is usually only partly visible. In another
case (his page 386), he used segmentation of the tarsi: ". . . the basal
three articles are so closely associated that the tarsus must be treated in potassium
hydroxide before all the articles can be seen." To attempt to sort specimens with a key
based on these characters would be impractical. However, Herman's study is a valuable contribution to the
knowledge of the group and represents the first complete revision of the
world genera of a large subfamily since 1840. Because easy identification was .the
purpose of our study, we also have not followed Herman's separation of Anotylus from Oxytelus
and Thinodromus from Carpelimus. In our key, Anotylus goes to Oxytelus
and Thinodromus goes to Carpelimus. . Herman (1972b) separated two new genera, Microbledius and Psamathobledius
from Bledius based on a similarly
cryptic tarsal formula. We have not followed this separation for the same
reasons. These two genera go to Bledius
in our key. We do not imply that our treatment
places Herman's genera in formal synonomy; we are merely attempting to make
identifications simpler. Megalopsidiinae This subfamily is represented by
the single genus . . . . . . . . . . . . . .Megalopinus Eichelbaum. Key to the Genera of Hypocyphtinae 1. Middle coxae distant;
mesosternum not carinate. . . . . . . . . . . . . . . . . . . . .. . Cypha Leach Middle coxae narrowly separated; mesosternum carinate. . . .
. . . . . . . . . . Anacyptus Horn Key to the Genera of Pinophilinae 1. Middle tibia spinose
externally. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lathropinus Sharp Middle tibia not spinose externally . .
. . . . . . . . . . . . . . . . . . . . . . . . . . .. . . .. . . . . . . . 2 |