Ardistomis

Bousquet, Yves, 2006, Review of the species of Ardistomina (Coleoptera: Carabidae: Clivinini) in America north of Mexico, Zootaxa 1308, pp. 1-29 : 6-7

Key to species of Ardistomina in America, north of Mexico, and " Ardistomis " morio

1 Proepipleura not visible from above; metacoxae contiguous medially; pleurite VII without small projection; body length around 8.5 mm and elytra without spot ............. ........................................................................................... " Ardistomis " morio (Dejean)

­ Proepipleura visible from above; metacoxae separated medially; pleurite VII with small projection fitted into preapical elytral plica ( Fig. 22 ); body length 4.8–8.0 mm and elytra with preapical rufous spot if over 7.0 mm.................................................... 2

2 Metasternum with row of punctures along metepisternal suture; clypeus with prominent lateral lobes ( Fig. 19 ) ................................. Aspidoglossa subangulata (Chaudoir)

­ Metasternum without row of punctures along metepisternal suture; clypeus with lateral lobes distinct but not prominent ( Fig. 20 ), or indistinct ( Fig. 21 ).......................... 3

3 Proepisternum with longitudinal band of sculpture ( Fig. 27 ); side of pronotum with only 2 setae; elytral striae impunctate (in the species treated) [genus Ardistomis ]....... 4

­ Proepisternum without band of sculpture; side of pronotum with several setae (in the species treated); elytral striae punctate, each puncture bearing seta (in the species treated) [genus Semiardistomis ] .................................................................................... 5

4 Elytron without metallic lustre, with preapical rufous spot; elytral interval 3 with 7–11 setae ................................................................................. Ardistomis obliquatus Putzeys

­ Elytron with blue­green lustre, without preapical spot; elytral interval 3 with 5 (–6) setae .................................................................................. Ardistomis schaumii LeConte

5 Frons with 2 supraorbital setae on each side; pronotal disc without setae...................... ............................................................................................ Semiardistomis viridis (Say)

­ Frons with 5–7 supraorbital setae on each side; pronotal disc with setae....................... .............................................................................. Semiardistomis puncticollis (Dejean)

Figures

FIGURES 19 – 22. 19 – 21. Head (dorsal view). 19, Aspidoglossa subangulata; 20, Semiardistomis viridis; 21, Ardistomis schaumii. 22, Extremity of body (lateral view) of Ardistomis schaumii. Scale bar = 0.2 mm (Figs 20 – 22), 0.5 mm (Fig. 19).

FIGURES 27 – 30. 27, Prosternum of Ardistomis schaumii. 28 – 30. Protibia (ventral view). 28, Aspidoglossa subangulata; 29, Semiardistomis viridis; 30, Ardistomis schaumii. Scale bar = 0.2 mm.