Anillinus clinei Sokolov, 2020

Sokolov, Igor M., 2020, Four new species of the genus Anillinus Casey (Coleoptera, Carabidae, Anillini) from Alabama, U. S. A., with a revised key to the Alabama species, Zootaxa 4808 (3), pp. 547-559 : 548-549

publication ID	https://doi.org/ 10.11646/zootaxa.4808.3.9
publication LSID	lsid:zoobank.org:pub:1A650979-86E0-4928-97CF-64D5FCDB53D1
DOI	https://doi.org/10.5281/zenodo.4328689
persistent identifier	https://treatment.plazi.org/id/A21A87EE-FFBC-E601-2998-F93DFADBFA26
treatment provided by	Plazi
scientific name	Anillinus clinei Sokolov
status	sp. nov.

Treatment

Anillinus clinei Sokolov View in CoL , sp. n.

( Figs. 1A View FIGURE 1 , 2A View FIGURE 2 , 3A View FIGURE 3 , 4 View FIGURE 4 A–C, 5)

Type material. Holotype, one male ( CMNH), dissected, labeled: \ Stewart Cave , Ala. nr Paint Rock, Jackson Co., 5.VII.58, under rocks \ H. R. Steeves, Jr. Collector \ [handwritten] . Paratypes, two females, labeled same as holotype [handwritten].

Specific epithet. This species is named after Andrew R. Cline (CDFA-Plant Pest Diagnostic Center, Sacramento, California), a specialist in Nitidulidae , for his friendly help in the author’s investigations on Carabidae .

Type locality. USA, Alabama, Jackson County, Stewart Cave .

Differential Diagnosis. Males of A. clinei can be distinguished from those of the other congeners by the large size, and the structure of the median lobe having copulatory sclerites of distinctive shape and lacking spines in the internal sac.

Description. Large-sized for genus (ABL 2.33–2.48 mm, mean 2.38± 0.084 mm, n=3).

Habitus: Body form ( Fig. 1A View FIGURE 1 ) moderately convex, slightly ovate, elongate (WE/ABL 0.37±0.007), head of average proportions for genus (WH/WPm 0.68±0.014), pronotum moderately narrow in comparison to elytra (WPm/ WE 0.77±0.014).

Integument: Body color brunneo-rufous, appendages testaceous. Microsculpture ( Fig. 2A View FIGURE 2 ) present along frontal sulci and vertex of head, base of pronotum, and elytra, where it is represented by isodiametric polygonal sculpticells; and absent from clypeus, most of frons, and disc of pronotum. Body surface shiny, surface sparsely and finely punctate, covered with sparse, yellowish, short setae. Vestiture of elytra moderately long (0.3–0.4 length of discal setae).

Prothorax: Pronotum ( Fig. 3A View FIGURE 3 ) moderately convex, of moderate size (LP/LE 0.41±0.009) and of almost equal length and width (WPm/LP 1.19±0.015), with lateral margins almost rectilinearly and slightly constricted posteriorly (WPm/WPp 1.19±0.014). Anterior angles indistinct, posterior angles nearly rectangular (95–100°). Width between posterior angles much greater than between anterior angles (WPa/WPp 0.82±0.029). Basal margin slightly concave in middle.

Scutellum: Externally visible, triangular, with rounded apex.

Elytra: Narrowly depressed along suture, of average length (LE/ABL 0.59±0.006) and width (WE/LE 0.64±0.011) for genus, with traces of 1–2 striae. Humeri distinct, rounded, in outline forming right angle with longitudinal axis of body. Lateral margins subparallel in middle, slightly divergent at basal fifth, evenly rounded to apex at apical third, with shallow subapical sinuation. Basal margination distinct.

Legs: Protarsi of male with moderately dilated tarsomere 1. Profemora moderately swollen. Metafemora unmodified.

Male genitalia: Median lobe ( Fig. 4A View FIGURE 4 ) of aedeagus anopic, slightly arcuate and moderately twisted. Shaft greatly dilated in apical half, with moderately elongate apex, conically tapered to subparallel rounded tip. Ventral margin of median lobe moderately enlarged, with many poriferous canals. Dorsal copulatory sclerites fused to form slightly curved, almost symmetrically organized, dorsal and ventral blade-like structures of moderate length, which are more heavily sclerotized dorsally. Spines and scaled membranous folds of internal sac absent. Left paramere ( Fig. 4B View FIGURE 4 ) of shape common in genus, paramere apex without setae. Right paramere ( Fig. 4C View FIGURE 4 ) short, bearing many (>5) long setae, which are much longer than the length of paramere.

Geographic Distribution. This species is known only from the type locality in Jackson County, Alabama ( Fig. 5 View FIGURE 5 , black cross) .

Habitat. According to the label, the small series of specimens of this species was collected under rocks in the cave.

Relationships. Presumably the species belongs to the group of local species characterized by a distinctive shape of the shaft of median lobe, which is getting wider towards its apical half. In addition to A. clinei , this group includes A. cavicola Sokolov , A. hirsutus Sokolov , and A. hildebrandti , new species, described below.