Baconia famelica, 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: 221-224

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Baconia famelica

sp. n.

Baconia famelica   sp. n. Figs 64 A–C 65Map 20

Type locality.

BRAZIL: Paraná: Telêmaco Borba [24.31°S, 50.51°W].

Type material.

Holotype male : “BR-PR-Telêmaco Borba, Klabin Papel e Celulose, ESALQ-84 ethanol-baited FIT Pinus taeda stand, Flechtmann, C.A.H. col., 09/XI/1999" / “NKL34” / "Caterino/Tishechkin Exosternini Voucher EXO-00593" (UNESP). Paratypes (12): BRAZIL: 11: Paraná:same locality as type [24°18.9'S, 50°30.6'W] various dates and FIT lures as follows: 2: 17.xii.1999, ethanol-baited FIT, 2: 9.xi.1999, ESALQ-84 ethanol-baited FIT, 1: 24.xi.2000, multiple funnel ethanol-baited FIT, 1: 31.x.2003, ethanol baited multiple funnel FIT, 1: 28.xi.2003, sulcatol-baited multiple funnel FIT, 1: 28.xii.2003, ethanol+α-pinene+sulcatol baited multiple funnel FIT, 1: 6.i.2004, sulcatol+α-pinene-baited multiple funnel FIT, 1: 16.i.2004, sulcatol+α-pinene-baited multiple funnel FIT, 1: 22.ix.2000, baited FIT; 1: Candido de Abreu Klabin S.A., Guarda Florestal Perau, 24°29'S, 51°16'W, 10.xi.2003, ethanol+α-pinene-baited multiple funnel FIT, Pinus taeda stand, C. Flechtmann (UNESP, CHND, FMNH, MSCC, AKTC).

Diagnostic description.

Length: 2.3-2.5mm, width: 1.6-2.0mm; body elongate, subparallel-sided, moderately depressed; head, pronotum and pygidia greenish blue, elytra distinctly more bluish, venter rufobrunneus; frons weakly carinate above antennal bases, shallowly depressed at middle, punctation of frontal disk moderately coarse, frontal stria present along eyes, curving inward at sides, weakly indicated in middle by faintly serial punctures, supraorbital stria absent; epistoma with apical margin convex, weakly elevated, depressed at middle; labrum about 4 ×wider than long, apical margin emarginate; each mandible with elongate apex and strong, acute median tooth; antennal scape rather short, apex obliquely truncate, club small, elongate oval, basal half mostly glabrous; pronotal sides weakly convergent in basal three-fourths, abruptly rounded to apices, marginal stria complete along lateral and anterior margins; lateral submarginal pronotal stria present along sides, weakly carinate, approaching marginal stria near anterior corner, pronotal disk narrowly, weakly depressed along its inner edge, depression slightly broadening in anterior corner; pronotal discal punctation fine and sparse medially, becoming rather dense at sides; elytra with epipleural striae slightly confused, two striae more or less complete, with a third variably abbreviated, outer subhumeral stria absent, inner subhumeral stria present in about basal three-fourths, 1st dorsal stria complete, 2nd-3rd striae very slightly abbreviated apically, 4th stria very fine, usually fragmented in basal half, 5th stria usually indicated by very short basal striole, occasionally absent, sutural stria present in apical two-thirds to nearly complete, elytral punctation fine, sparse, but conspicuous throughout, slightly denser posterad; prosternum narrow basally, weakly convex, keel narrowly and weakly emarginate at base, carinal striae closest near base, weakly divergent posterad and anterad, often slightly abbreviated anteriorly; prosternal lobe about one-half keel length, apical margin sinuate, weakly emarginate at middle, weakly deflexed, marginal stria fine, present only at middle; mesoventrite with anterior margin finely produced, marginal stria complete, broadly arcuate, diverging from margin laterally, mesometaventral stria absent; lateral metaventral stria extending posterolaterad toward middle of metacoxa, outer lateral stria short, disrupted by lateral punctures, metaventral disk with only very fine, sparse ground punctation medially; abdominal ventrite 1 with single lateral stria abbreviated apically, middle portion of disk mostly very finely, sparsely punctate, with slightly coarser punctures along posterior margin; protibia with 3 weak teeth and few weaker basal marginal denticles, outer margin very finely, weakly serrulate; mesotibia with 2 fine marginal spines; outer metatibial margin smooth; propygidium without basal stria, coarsely and uniformly punctate; propygidial gland openings very fine but evident, about one-third from basal and one-fourth from lateral margins; pygidium more finely, more or less uniformly punctate. Male genitalia (Fig. 65): T8 slightly wider than long, basal emargination shallow, sides convergent, apical emargination shallow, ventrolateral apodemes well sclerotized, nearly meeting at midline beneath; S8 halves approximate in basal half, narrowing apically, apical guides similar in width along apical half, apices bluntly rounded, apical velum with weakly sclerotized subtriangular plates; T9 with long, thick proximal apodemes about one-half entire length, apices narrowly rounded, convergent, ventrolateral apodemes subacute beneath; T10 elongate; S9 with stem weakly widened near base, apical arms divergent, apical emargination shallow; tegmen sides subparallel in basal two-thirds, tegmen in lateral view weakly curving ventrad over most of length; median lobe about one-third tegmen length; basal piece short, about one-fourth tegmen length.


This species and following two are very similar, and rather distinctive in this species group by being relatively impunctate and ‘normal’ looking (the subsequent species are more obviously autaomorphic in general body form). Baconia famelica   differs in its relatively uniformly punctate frons (Fig. 64B) and epistoma (the epistoma in particular is nearly impunctate in Baconia grossii   ), lack of fine oblique rugosity on the elytral apices (finely, obliquely rugose in Baconia redemptor   ), and nearly complete inner subhumeral stria (only fine basal fragment present in Baconia grossii   ; irregularly interrupted in Baconia redemptor   ).


This species’ name means ‘hungry’, alluding to the large number of specimens attracted by bark beetle lures, undoubtedly hoping to find their prey.