Fourteen species of the genus Chlaenius from the semi-arid and sub-humid plain zones of Rajasthan (India) have been revised in this paper, including the description of two new species: Chlaenius (Lissauchenius) udaipurensis sp. nov. and Chlaenius (Chlaeniellus) pseudotristis sp. nov. A key to these species has been given with suitable line diagrams and photographs to illustrate key taxonomic characters including labrum, mentum, maxillary and labial palpi, pronotum, elytra and aedeagus.
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