Operclipygus sejunctus (Schmidt, 1896) Schmidt, 1896

Caterino, Michael S. & Tishechkin, Alexey K., 2013, A systematic revision of Operclipygus Marseul (Coleoptera, Histeridae, Exosternini), ZooKeys 271, pp. 1-401 : 74-77

Operclipygus sejunctus (Schmidt, 1896) comb. n. Figs 19 A–B20A–DMap 7

Phelister sejunctus Schmidt, 1896: 61; Pseudister sejunctus : Bickhardt (1917: 164).

Phelisteroides punctipennis Wenzel, 1944: 139; synonymized by Wenzel (1976: 257).

Type locality.

BRAZIL: Paraíba: Santa Rita [7°13'S, 35°2'W].

Type material.

Phelister sejunctus : Lectotype of undetermined sex, here designated: [Brazil: Paraíba:] "S. Rita" / “Type” [red printed] / “Type” [Schmidt's handwriting]" / " Phelister sejunctus " / "coll. J. Schmidt" / "LECTOTYPE Phelister sejunctus Schmidt, 1896, M.S.Caterino & A.K.Tishechkin des. 2010" (ZMHB).This species was described from an unspecified number of specimens, and the lectotype designation fixes primary type status on the only known original specimen. Phelisteroides punctipennis : Holotype: "Chapada Brazil Acc. No 2966" / “Nov.” / "Type Phelisteroides punctipennis Wenzel" (CMNH), examined 2012.

Other material.

ARGENTINA: Misiones: 1: 15km SE Puerto Iguazú, 27.xii-6.i.1991, FIT, mature forest, roadside, S. & J. Peck (FMNH); 1: Parque Nac. Iguazú, Cantera, 200m, 8. xii– 6.i.1991, FIT, old gravel pit at forest edge, S. & J. Peck (FMNH). BRAZIL: Paraná: 1: Piraquara, Mananciais da Serra, 25°29.77'S, 48°58.90'W, 1000m, 1-8.xi.2007, FIT, P. Grossi & D. Parizotto (UFPR), 1: 10-17.x.2007, FIT, P. Grossi & D. Parizotto (CHND), 1: 2008, P. Grossi (UFPR), 1: 3-10.ix.2007, P. Grossi (UFPR); 1: Mpio. Curitiba, nr. Campina Grande do Sul, 25.2965°S, 49.0381°W, 7-10.xii.2011, FIT, F.W.T. Leivas (UFPR): DNA Extract MSC-2257; 1: Ponta Grossa, V. Velha - IAPAR, 18.x.1999, Ganho & Marinoni (UFPR); 1: Telêmaco Borba, Klabin Papel e Celulose, Fazenda Monte Alegre, 21°13'18.4"S, 50°28'06.3"W, Araucaria angustifolia (Bertoloni) Kuntze forest, sulcatol baited FIT, 22.ix.2006, C.A.H. Flechtmann (UNESP-IS), Telêmaco Borba, Klabin Papel e Celulose, Fazenda Monte Alegre, Pinus taeda L. stand, a-pinene+ethanol+sulcatol baited FIT, 9.iii.2007 (UNESP-IS); Rio de Janeiro: 2: Nova Friburgo, 22°16'S, 42°32'W, 26-31.x.2009, FIT (CHND). PARAGUAY: Itapúa: 2: Karonay, 17km W. San Rafael Reserve, 26°45'53"S, 55°50'37"W, 90-110m, 18-20.xi.2000, FIT, Z. Falin (SEMC).

Diagnosis.

Length: 1.97-2.56 mm, width: 1.72-2.18 mm; body piceous; frons and epistoma very weakly depressed, with fine but conspicuous ground punctation; frontal stria variably impressed at middle, interrupted on each side, at sides continuous with complete supraorbital stria; right mandible with weak tooth, left with very weak basal tooth; pronotum broadly depressed across base, lacking discrete prescutellar impression; pronotal disk with discrete group of ~16 coarse punctures on each side; lateral submarginal pronotal stria complete, weakly crenulate; central portion of anterior pronotal emargination weakly produced; anterior marginal pronotal stria interrupted behind head; anterior submarginal pronotal stria detached, recurved slightly behind eyes, median pronotal glands near its apices, about 8 puncture widths from anterior margin. Elytra with complete inner epipleural stria, and apical half of outer epipleural stria; outer subhumeral stria present in apical half and with variable detached fragment in basal half; inner subhumeral stria nearly complete, just slightly abbreviated at both ends; dorsal striae 1-4 complete; 5th present in apical half, sutural stria in apical two-thirds; elytral disk with coarser punctures confined to very narrow band near apex. Prosternal keel produced posterad into mesoventral emargination, carinal striae complete and connected at both ends, prosternal interspace with conspicuous microsculpture; prosternal lobe elongate, apically rounded, marginal stria well impressed at middle, variably obsolete laterally. Mesoventrite emarginate at front, marginal stria interrupted by broadly anteriorly arched mesometaventral stria; mesoventral disk with fine ground punctation only; postmesocoxal stria curved forward to mesepimeron; lateral metaventral stria extending to hind coxa, with a very short secondary lateral metaventral stria parallel to it just behind coxa; metaventral disk with inconspicuous ground punctation, with coarse punctures anteromediad metacoxae in a relatively discrete band in posterior one-fourth of disk; first abdominal ventrite with coarse punctures between metacoxae (mostly in anterior half of central portion of disk); all tibiae rather narrow and elongate, protibia with 5 weak marginal teeth, the meso- and metatibiae with 4-5 marginal spines, and well developed submarginal ridge. Propygidium with fine ground punctation and with uniformly placed coarser, crescent-shaped punctures, these set about half a puncture width apart; fine ground punctation of pygidium denser than propygidium, with slightly coarser punctures more or less uniformly spaced about 1-1.5 puncture widths apart, these denser toward basal margin; marginal pygidial stria present, complete, but very fine and close to margin. Male genitalia (Figs 20 A–D): basal accessory sclerites present, but small and loosely associated; T8 with deep, broad basal emargination, apical emargination ‘V’ -shaped, basal membrane attachment line complete, but very close to apex of basal emargination, ventrolateral apodemes strongly developed at base, gradually narrowing to apex; S8 with apical guides narrow, just slightly widening to apex, with a couple long apical spines, halves approximate along most of midline, fused in basal fourth to one-third; diverging slightly to apex; T9 with thin, rounded apices, ventrolateral apodemes forming blunt teeth near midpoint; T10 with halves separate, large, filling most of T9 space; S9 narrow and elongate, broadening in basal two-thirds, abruptly widened at extreme base, base bluntly rounded, with vague midline strengthening in apical half, apex with narrow emargination, apical flanges small and separate; aedeagus approximately parallel-sided in basal two-thirds, only very slightly widened to midpoint, evenly narrowed to apex, with moderately strong, ‘V’ -shaped medioventral process with apex just basad midpoint; basal piece about one-fourth tegmen length; median lobe approximately one-third tegmen length.

Remarks.

The nominate species in the Operclipygus sejunctus group can be recognized by the metaventral punctures, which are largely and discretely limited to the posterior portion of the metaventral disk (Fig. 19B), in combination with the complete supraorbital stria.