Rhysodinae (Carabidae), Laporte, 1840

Wang, Cheng-Bin, 2020, Catalogue of rhysodine beetles (Coleoptera: Carabidae) from East Asia, Zootaxa 4895 (4), pp. 541-558 : 552-553

Key to genera of Rhysodinae (Carabidae) from East Asia

(modified from Bell & Bell 1991, 2011 [ Shyrodes nakladali Bell & Bell, 2011 ], and Bell 1999)

1. Minor setae of outer antennomeres forming a tuft on ventral side or minor setae entirely absent (except ultimate antennomere) ( Clinidiini )............................................................................................2

1’. Minor setae of each outer antennomere forming a subapical ring (usually only one seta in width)....................... 3

2. Pronotum with complete paramedian grooves.................................................... ... Rhyzodiastes

2’. Pronotum with basal impressions, usually preceded by discal strioles but not forming complete paramedian grooves..................................................................................................... Clinidium

3. Median lobe of head elongate, extending to neck constriction, widely separating temporal lobes ( Rhysodini )....... Rhysodes

3’. Median lobe of head not so elongate, not separating temporal lobes ( Omoglymmiini )................................ 4

4. Pronotum with paramedian grooves incomplete anteriorly or entirely absent........................................5

4’. Pronotum with paramedian grooves complete, extended to anterior margin of pronotum...............................6

5. Eye with distinct ommatidia, either fully developed or else slightly reduced but not protruding; basal scarp of elytron simple, transverse....................................................................................... Yamatosa

5’. Eye minute, ocelliform, protruded, without visible ommatidia; basal scarp of elytron oblique, limiting triangular depression around scutellum................................................................................ Shyrodes

6. Metatibia with one spur....................................................................... Omoglymmius

6’. Metatibia with two spurs........................................................................ ... Arrowina