Key to the Genera of Dhysorina

Ross T. Bell

The following key is based on characters of adult beetles.


1.      Basal impression (including discal striole) 0.55 to 0.95 of 
        length of pronotum (Figure 1); eye relatively large, deeper  
        than long.................................................2

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1'.     Basal impression less than 0.25 of length of pronotum; eye 
        reduced, longer than deep. ..........................Tangarona


2(1).   Prefrontal pits round or oval, separated by at least the 
        diameter of one of them (Figure 2); pronotum with 1 or 0 
        marginal setae.......................................Dhysores

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2'.     Prefrontal pits oblique, separated by less than half the 
        width of one of them; pronotum with five marginal setae  
        (Figure 3).........................................Neodhysores

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Images modified from:

Bell, R. T. and J. R. Bell. 1978. Rhysodini of the World part I. A new classification of the tribe, and a synopsis of Omoglymmius subgenus Nitiglymmius, new subgenus (Coleoptera: Carabidae or Rhysodidae). Quaestiones Entomologicae 14: 43-88.