Ardistomis obliquatus Putzeys, 1846

Bousquet, Yves, 2006, Review of the species of Ardistomina (Coleoptera: Carabidae: Clivinini) in America north of Mexico, Zootaxa 1308, pp. 1-29 : 19-23

Ardistomis obliquatus Putzeys, 1846

( Figs 3 , 8 , 9 , 14 , 35 )

Ardistomis obliquata Putzeys 1846: 638 . Type locality: "Amérique boréale", herein restricted to Saint Catherines Island, Georgia, U.S.A. ­ LeConte (1857: 80); LeConte (1879: 32). Ardistomis obliquatus: Nichols (1988a: 71, 93); Ciegler (2000: 43).

Type Material. Putzeys originally described this species from one specimen in Buquet's collection. The holotype is a male located in MHNP and labelled "Amer. bor." [handwritten] / Ex Musaeo Mniszech / HOLO / TYPE / Holotype Ardistomis obliquata Putz. det. George E. Ball '72 / Holotype Ardistomis obliquata Putz. des. S.W. Nichols 1984" (fide Nichols 1988a: 94).

Diagnosis. Differs from all other species treated, except Aspidoglossa subangulata , by the preapical rufous spot on each elytron. Distinguished most readily from A. subangulata by the impunctate elytral striae.

Description. Same character states as for A. schaumii except for the followings. Shape: Body slightly more elongate. Color: Upper surface in general darker, pronotum and elytra without lustre, elytra with preapical rufous spot on each side. Head: Vertex between posterior supraorbital setae without transverse groove. Elytra: Interval 3 with 7–11 setae. Metathorax (underside): Metasternum slightly shorter. Male Genitalia: Median lobe ( Fig. 8 ) proportionally longer with apex not tapered, endophallus without large spines ( Fig. 9 ). Female Genitalia: Apical stylomere wider ( Fig. 14 ).

Body length: 6.2–8.0 mm.

Geographical Distribution. This species ranges from New Jersey south to Florida (not recorded from the Keys), west to Louisiana ( Fig. 35 ).

Habitat. Löding (1945: 13) reported this species from "wet swamps" in Mobile county, Alabama.

Comments. This species seems closely related to Ardistomis nitidipennis Darlington, from Cuba, based on overall similarity.

FIGURES 36–39. Larval structures of Semiardistomis viridis (L1). 36, Cephalic capsule, left antenna, and right mandible (dorsal view); 37, Maxilla (dorsal view); 38, Urogomphi (dorsal view); 39, Femur, tibia, tarsus, and claw (laterodorsal view).

Figures

FIGURE 35. Collection localities for Ardistomis obliquatus Putzeys.

FIGURES 2 – 3. Habitus (dorsal view). 2, Semiardistomis viridis (Say); 3, Ardistomis obliquatus Putzeys. Scale bar = 1 mm.

FIGURES 4 – 8. Median lobe (a) and paremeres (b). 4, Aspidoglossa subangulata; 5, Semiardistomis viridis; 6, S. puncticollis; 7, Ardistomis schaumii; 8, A. obliquatus.

FIGURES 9 – 10. Sclerotized structures of endophallus. 9, Ardistomis obliquatus; 10, A. schaumii.

FIGURES 11 – 18. 11 – 14. Apical stylomere. 11, Aspidoglossa subangulata; 12, Semiardistomis viridis; 13, Ardistomis schaumii; 14, A. obliquatus. 15 – 18. Spermatheca. 15, Aspidoglossa subangulata; 16, Semiardistomis viridis; 17, S. puncticollis; 18, Ardistomis schaumii.