Baconia repens, Caterino, Michael S. & Tishechkin, Alexey K., 2013

Caterino, Michael S. & Tishechkin, Alexey K., 2013, A systematic revision of Baconia Lewis (Coleoptera, Histeridae, Exosternini), ZooKeys 343, pp. 1-297 : 107-109

Baconia repens sp. n. Fig 30BMap 8

Type locality.

BRAZIL: Santa Catarina: Nova Teutonia [27.18°S, 52.38°W].

Type material.

Holotype female: "Nova Teutonia, Sta Catharina, BRAZ. I:8:1958 Fritz Plaumann leg." / "FMNH-INS 0000 069 307" (FMNH). Paratype (1): BRAZIL: Santa Catarina: Nova Teutonia, i.1963, F. Plaumann (FMNH).

Other material.

1: BRAZIL: Paraná: Telêmaco Borba Klabin S.A., 24°18.9'S, 50°30.6'W, 22.ix.2006, baited FIT, Pinus taeda stand, C. Flechtmann (UNESP).

Diagnostic description.

Length: 1.9-2.0mm, width: 1.4-1.6mm; body elongate, sides weakly rounded, subdepressed, glabrous; body rufobrunneus with strong metallic tinge; frons together with epistoma strongly convex, interocular margins moderately convergent dorsad, few coarse punctures present throughout, especially toward vertex, frontal and supraorbital striae absent, marginal ocular punctures subserially arranged; antennal scape short, club rounded; epistoma straight apically; labrum about 3 ×wider than long, apex weakly emarginate; mandibles short, both with small acute tooth; pronotal sides weakly convergent from base, marginal stria complete around lateral and anterior margins, submarginal stria absent; pronotal disk weakly depressed in anterior corners, convex along rest of lateral margin, disk with fine ground punctation and conspicuous secondary punctures almost throughout, relatively impunctate only in small area posterad center of disk; elytra with two to three complete epipleural striae, the outermost may be fragmented, outer subhumeral stria absent, inner subhumeral stria faintly impressed at base, dorsal striae 1-5 present to base, increasingly abbreviated apically, with 1st complete and 5th present in basal two-thirds only, sutural stria nearly complete, but variably, slightly abbreviated basally and apically, elytral disk with very sparse secondary punctures in apical fourth; prosternal keel narrow, weakly convex, base narrowly, shallowly emarginate, carinal striae complete may unite apically; prosternal lobe about two-thirds keel length, weakly deflexed, apical margin rounded, marginal stria slightly fragmented at sides; mesoventrite narrowly, subacutely produced at middle, marginal stria complete; mesometaventral stria broadly arched forward, crenulate, separated from inner lateral metaventral stria, which extends from apex of marginal mesoventral stria, curving obliquely posterolaterad toward outer third of metacoxa, outer lateral metaventral stria present along basal half of inner stria, metaventral and 1st abdominal disks impunctate at middle; abdominal ventrite 1 with complete inner lateral stria, outer stria complete or nearly so; protibia with four rather conspicuous marginal denticles, outer margin very finely serrulate between; mesotibia with two distinct marginal spines; outer metatibial margin smooth; propygidium without transverse basal stria, with ocellate punctures more or less uniformly separated by slightly less than their diameters; propygidial gland openings evident about one-third from anterior margin and almost one-third from lateral margins; pygidium flat to weakly depressed along lateral margins, with fine, sparse ground punctation throughout, with small, sparse secondary punctures more conspicuous in basal half. Male genitalia: not known.

Remarks.

This species shares many characters with the preceding, but is distinctly larger, has the body shape a bit more oval, less purely parallel-sided (Fig. 30B), and is much less distinctly bicolored, with the elytra only faintly metallic to their apices. The specimen from Paraná is more distinctly metallic in coloration, and exhibits some slight differences in elytral striae, and is therefore excluded from the type series.

Etymology.

This species’ name means crawling or creeping, also new or unexpected.