Anillinus barri Sokolov and Carlton

Sokolov, Igor M., Carlton, Christopher & Cornell, James F., 2004, Review of Anillinus, with Descriptions of 17 New Species and a Key to Soil and Litter Species (Coleoptera: Carabidae: Trechinae: Bembidiini), The Coleopterists Bulletin 58 (2), pp. 185-233 : 208-209

Anillinus barri Sokolov and Carlton , new species

( Fig. 22 , Map fig. 38)

Holotype ( USNM). Male labeled / USA: TN, Monroe Co., Indian Boundry (sic) Campground, Berlesate, 29.V.1991, C.E.Carlton / LSAM0017693 / HOLOTYPE, Anillinus barri Sokolov and Carlton , des.2003/.

Paratypes ( LSAM). Two males with same collection data as holotype .

Specific Epithet. The specific epithet honors Thomas C. Barr (Nashville, TN) in recognition of his contributions to carabid systematics.

Description. Medium-sized for genus (ABL range, 1.62–1.69 mm; mean, 1.66 mm, n ¼ 3). Habitus moderately convex, ovoid (WE/ABL, 0.39) head normally proportioned for genus (WH/ WPm, 0.74), with relatively narrow pronotum and elytra (WPm/WE, 0.81). Color of body brunneorufous, appendages testaceous. Microsculpture of head limited to small triangular area at middle of vertex, microsculpture absent on disc of pronotum.

Pronotum moderately convex, and transverse (WPm/LP, 1.31), with margins rectilinear and moderately constricted posteriad (WPm/WPp, 1.28). Anterior angles evident, slightly prominent. Posterior angles slightly obtuse (105–1158). Width between posterior angles greater than between anterior angles (WPa/WPp, 0.96).

Elytra moderately convex, moderately depressed along suture, of normal length for genus (LE/ ABL, 0.58), with traces of 1–2 interneurs. Humeri moderately prominent, slightly rounded. Vestiture is relatively short (less than one-fourth the length of the discal setae).

Males with metafemora simple.

Females unknown.

Median lobe ( Fig. 22 ) elongate, twisted, with enlarged, rounded apex and enlarged acute ventral margin. Internal sac with copulatory piece forming a long, filament-like structure, with apex extended beyond the internal sac; ventral sclerite and spines of internal sac absent.

Distribution. This species is known only from the type locality in Monroe County, Tennessee ( Fig. 38).

Habitat. Beetles were collected in hardwood forest litter at mid-elevations (700– 1,300 m).

Differential Diagnosis. Anillinus barri is ovoid in form without microsculpture on the forebody ( Table 2, group VIII of litter species). It is distinguished from all other species in this group (for which males are known) by the form of the median lobe and dorsal copulatory sclerite.

This species is sympatric with A. langdoni and two species of Serranillus . From A. langdoni it differs by the absence of microsculpture on the disc of the pronotum.

Figures

Figs. 18–24. Aedeagi of Anillinus spp., right lateral aspects, scale ¼ 0.1 mm. 18) A. elongatus Jeannel; 19) A. fortis (Horn); 20) A. steevesi Barr; 21) A. balli n. sp.; 22) A. barri n. sp.; 23) A. cornelli n. sp.; 24) A. daggyi n. sp.