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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