Baconia jubaris Lewis, 1901

Caterino, Michael S. & Tishechkin, Alexey K., 2013, A systematic revision of Baconia Lewis (Coleoptera, Histeridae, Exosternini), ZooKeys 343, pp. 1-297 : 29-31

Baconia jubaris Lewis, 1901 Figs 5 A–BMap 1

Baconia jubaris Lewis, 1901: 371.

Type locality.

BRAZIL: Bahia: San Antonio da Barra [13.0°S, 38.5°W].

Type material.

Lectotype, sex undetermined, here designated (BMNH): "S.Antonio da Barra, Pr. de Bahia, Gounelle, 11-12.88"/ "Baconia jubaris Lewis Type" / "George Lewis Coll. B.M.1926-369." / "LECTOTYPE Baconia jubaris Lewis, M.S.Caterino & A.K.Tishechkin des. 2010". This species was described from an unspecified number of specimens, and the lectotype designation fixes primary type status on the only known original specimen.

Diagnostic description.

Length: [not measured, ~2.5mm], width: [not measured, ~1.5mm]; body broadly subquadrate, sides weakly rounded, widest just behind humeri, strongly flattened, glabrous; dorsum entirely metallic blue, pronotum and py gidia slightly more greenish-blue; frons very weakly depressed at middle, interocular margins weakly convergent dorsad, disk with scattered, mostly fine punctures, few coarser punctures intermingled at middle; frontal stria absent, lacking from inner edge of eyes; epistoma very weakly emarginate; labrum about 3 ×wider than long, distinctly emarginate apically; each mandible with acute basal tooth on inner margin; pronotal sides converging, arcuate to apex, weakly explanate at sides, lateral marginal stria complete around lateral and anterior margins, fine and close to margin; pronotum very finely and very sparsely punctate throughout, with slightly larger punctures interspersed in lateral sixth; elytra with outer subhumeral absent, inner subhumeral stria more or less complete, 1st dorsal stria complete, 2nd dorsal stria slightly abbreviated basally, 3rd dorsal stria present as fine basal scratch and represented by punctures in apical third, 4th, 5th and sutural striae absent; elytral disk with conspicuous secondary punctures in apical fourth; prosternal keel broad, weakly convex, base bisinuate, weakly produced on either side, emarginate medially, carinal striae complete, united along basal margin, subparallel; prosternal lobe about two-thirds keel length, apical margin broadly rounded, marginal stria well impressed at middle; mesoventrite sinuate, broadly emarginate but weakly produced at middle, marginal stria broadly interrupted at middle; mesometaventral stria present at middle, arched strongly forward to near margin; inner lateral metaventral stria sinuately curving posterolaterad toward outer third of metacoxa, nearly complete, outer lateral metaventral stria weakly indicated in anterior third, metaventral disk impunctate at middle; abdominal ventrite 1 with complete inner lateral stria and posterior half of outer lateral stria, disk impunctate at middle; protibia rather narrow, elongate, with five weak marginal teeth, outer margin very finely serrulate between; meso- and metatibiae narrow, mesotibia with two marginal spines; propygidium lacking basal transverse stria, discal punctures ocellate, rather deep, separated by about their diameters; pygidial punctures smaller, sparser toward apex. Male genitalia: not known.

Remarks.

This species is very similar to the preceding, but can be distinguished by the complete lack of frontal stria (Fig. 5B), even from the inner margins of the eyes, absence of 4th and 5th elytral striae (Fig. 5A), and more nearly complete inner subhumeral stria. It is known only from the type specimen.