Semiardistomis Kult, 1950

Bousquet, Yves, 2006, Review of the species of Ardistomina (Coleoptera: Carabidae: Clivinini) in America north of Mexico, Zootaxa 1308, pp. 1-29 : 10

Genus Semiardistomis Kult, 1950

Semiardistomis Kult 1950: 301 . Type species: Clivina labialis Chaudoir, 1837 , by original designation. Ciegler (2000: 11, 43); Ball and Bousquet (2001: 45, 74)

Ardistomiellus Kult 1950: 303 . Type species: Clivina viridis Say, 1823 , by original designation. Synonymy established by Whitehead [in Reichardt] (1977: 392).

Description. Head: Clypeus with lateral lobes distinct but not prominent, or indistinct ( Fig. 20 ). Antennomere 2 shorter than antennomere 3. Prothorax: Proepisternum without diagonal band of sculpture. Elytra: Striae punctate in most species studied, punctures with setae or not. Lateral margin prolonged beside basal extremity as carina joining stria 3 ( Fig. 26 ), except in S. puncticollis . Metathorax (underside): Metasternum with setae (particularly in front of metacoxae), without row of punctures along metepisternal suture. Abdomen: Visible abdominal sterna 3–6 with accessory setae. Suture between visible abdominal sterna 2 and 3 erased at middle. Legs: Ventral surface of protibia with several setae on basal half along middle ( Fig. 27 ).

Species studied. S. brittoni (Kult) ; S. cyaneolimbatus (Chevrolat) ; S. deletus (Putzeys) ; S. emdeni (Kult) ; S. labialis (Chaudoir) ; S. marani (Kult) ; S. pallipes (Dejean) ; S. propinquus (Putzeys) ; S. puncticollis (Dejean) ; S. semipunctatus (Dejean) ; S. viridis (Say) .

Diversity and Geographical Distribution. Twelve species of Semiardistomis are recorded by Lorenz (1998: 136). However, a number of species included by him in Ardistomis belong to this genus; this is so for S. cyaneolimbatus (Chevrolat) , S. deletus (Putzeys) , S. labialis (Putzeys) , S. laevistriatus (Fleutiaux & Sallé) ; S. ovatus (Putzeys) , S. pallipes (Dejean) , S. propinquus (Putzeys) , S. rotundipennis (Putzeys) , S. rugosus (Putzeys) and S. semipunctatus (Dejean) (see Kult 1950; Nichols 1988a; pers. observ.). The species range, collectively, from eastern United States south to Argentina, including the West Indies.

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 23 – 26. 23 – 24. Protarsomeres (ventral view). 23, Aspidoglossa subangulata ɗ; 24, Aspidoglossa subangulata Ψ. 25 – 26. Humeral region (dorsal view). 25, Aspidoglossa subangulata; 26, Semiardistomis viridis. Scale bar = 0.2 mm.

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.