Note

Key to the Subtribes of Rhysodini

Ross T. Bell

The following key is based on characters of adult beetles. The text was first published in Bell and Bell (1991).


1
. Mentum separated laterally from gena by a cleft (Figure 1). .............................................................2
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 1'. Mentum completely fused laterally to gena (Figure 2). .......3
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2
(1). Minor setae of outer antennal segments in broad bands (Figure 3); pronotum with paramedian grooves narrow, complete; median groove with anterior, posterior pits (Figure 4); pronotum much narrower than elytra; elytral humerus not dentate. .............................Leoglymmiina
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2'. Minor setae of outer antennal segments forming subapical ring on each segment (Figure 5); pronotum with rounded basal impressions, without paramedian grooves; median groove linear, not expanded at either end to form anterior, posterior median pits (Figure 6); pronotum broad, almost as wide as elytra; elytral humerus dentate. ......Sloanoglymmiina
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3
(1). Minor setae of outer antennal segments forming a tuft on ventral side of segment (Figure 7) or minor setae entirely absent (except apical segment) .....................Clinidiina
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 3'. Minor setae of each outer antennal segment forming a subapical ring (usually only one seta in width, Figure 8). .............................................................4
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4
(3). Median lobe of head elongate, extending to neck constriction, widely separating temporal lobes (Figure 9). .....................................................Rhysodina
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 4'. Median lobe not so elongate, not separating temporal lobes (Figure 10). ................................................5
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5
(4). Median lobe not defined; frontal pit round, porelike; frontal grooves absent or barely suggested (Figure 11) (Africa, South America, New Zealand). ...............Dhysorina
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 5'. Median lobe defined by frontal grooves, usually deep (Figure 12). ........................................................6
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6
(5). Frontal pit absent; median grooves very shallow, meeting at neck constriction (Figure 13) (South Africa). ......Medisorina
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 6'. Frontal pit present, overhung by tip of median lobe; frontal grooves deep in most species; if grooves are very shallow, then frontal pit is large, crescentic (Figure 14). ..................................................Omoglymmiina
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Figures 1-3, 5, 7, 8 modified from

Bell, R. T. and J. R. Bell. 1991. The Rhysodini of Australia (Insecta: Coleoptera: Carabidae or Rhysodidae). Annals Of The Carnegie Museum 60(3): 179-210.

Copyright 1991, The Carnegie Museum. Courtesy Carnegy Museum of Natural History, Pittsburgh, Pennsylvania, USA.

Figures 4, 9-12, 14 modified from

Bell, R. T. and J. R. Bell. 1979. Rhysodini of the World part II. Revisions of the smaller genera (Coleoptera: Carabidae or Rhysodidae). Quaestiones Entomologicae 15: 377-446.

Copyright 1979, R. T. Bell and J. R. Bell.

Figures 6, 13 copyright 2000, R. T. Bell.

About This Page

Ross T. Bell
University of Vermont, Burlington, Vermont, USA

All Rights Reserved.

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