Operclipygus incisus, Caterino, Michael S. & Tishechkin, Alexey K., 2013

Caterino, Michael S. & Tishechkin, Alexey K., 2013, A systematic revision of Operclipygus Marseul (Coleoptera, Histeridae, Exosternini), ZooKeys 271, pp. 1-401 : 132-133

Operclipygus incisus sp. n. Figs 36 I–MMap 12

Type locality.

FRENCH GUIANA: 33.5 km S and 8.4 km NW of Highway N2 on Highway D5 [4°48.3'N, 52°28.7'W].

Type material.

Holotype male: "FRENCH GUIANA, Cayenne, 33.5 km S and 8.4 km NW of Hwy N2 on Hwy D5, 30 m, 4°48'18"N, 52°28'41"W 29 MAY-9 JUN 1997; J.Ashe,R.Brooks FG1AB97 171, ex:flight intercept trap"/ "SM0102418 KUNHM-ENT" (SEMC). Paratypes (9): 5: same data as type (FMNH, MSCC, AKTC, MNHN); 3: same data as type except 26-28.v.1997, FIT, J. Ashe, R. Brooks (SEMC, CHND); 1: 8.4km SSE Roura,, 4°40'41"N, 52°13'25"W, 200m, 22-24.v.1997, FIT, J. Ashe, R. Brooks (SEMC).

Other material.

BRAZIL: Amapá: 6: Serra do Navio, 0°59'N, 52°00'W, 1-14.v.1991, FIT (CHND, MNHN); Amazonas: 1: INPA/Smithsonian Res., Manaus, 2°25'S, 59°50'W, ii.1994, Winkler method, leaf litter, terra firma forest, R. Didham (BMNH); 2: Reserva Ducke, 26km NE Manaus, ii.1995, FIT, M.G.V. Barbosa (BMNH); Pará: 1: Tucuruí, 3°45'S, 49°40'W, iv.1986, FIT (CHND); 2: IPEAN, Utinga, Belém, 1°27'S, 48°26'W, xii.1984, FIT (CHND). FRENCH GUIANA: 1: Saül, 7km N, 1km NW Les Eaux Claires, along Route de Bélizon trail, 3°39'46"N, 53°13'19"W, 280m, 4-8.vi.1997, FIT, J. Ashe, R. Brooks (SEMC); 1: Cayenne, Saül, 7 km N, Les Eaux Claires, 3°39'46"N, 53°13'19"W, 220m, 31. v– 3.vi.1997, FIT, J. Ashe, R. Brooks (SEMC); 1: Belvèdére de Saül, point de vue, 3°1'22"N, 53°12'34"W, 17.i.2011, FIT, SEAG (CHND); 1: Mont Tabulaire, Itoupé, 3°1.82'N, 53°6.40'W, 400m, 31.iii.2010, Window trap, SEAG (CHND), 1: 24.iii.2010, Window trap, SEAG (CHND), 3: 17.iii.2010, Window trap, SEAG (CHND). SURINAME: Saramacca: 1: West Suriname Road, 139km WSW Zanderji Airport, ca, 5°9'N, 56°4'W, 40-50m, 10-14.vi.1999, FIT, Z. Falin, B. DeDijn (SEMC); Sipaliwini: 1:CI-RAP Surv. Camp 3: Wehepai SE Kwamala, 2°21.776'N, 56°41.861'W, 237m, 3-7.ix.2010, FIT, T. Larsen & A.E.Z. Short (SEMC).

Diagnostic description.

This species is very similar to both of the preceding, differing as follows: length: 1.44-1.47 mm, width: 1.09-1.12 mm; frons less strongly impressed at middle, antennal bosses not as prominent; frontal stria usually complete across front, rarely narrowly interrupted at sides; epistoma depressed, very weakly convex along apical margin, but basically coplanar with flat labrum; prescutellar impression narrow, linear, almost twice as long as scutellum; lateral submarginal stria complete; lateral portion of pronotal disk with ~15 coarse punctures; anterior submarginal pronotal stria strongly and slightly obliquely recurved posterad, reaching nearly to the middle of the pronotal disk; propygidium densely covered with small round punctures separated by about half their diameters. Male genitalia (Fig. 36 I–M): accessory sclerites present, rather small; T8 shorter, with sides more strongly convergent, rounded to apex, apical emargination broader, shallow, rounded; S8 less broadly rounded basally, with apical guide portion accounting for nearly half of overall length; T9 with sides more evenly rounded from base to apex, apices only weakly convergent, obliquely truncate; S9 desclerotized along midline, almost parallel sided, only weakly widened to base, lateral flanges wide but without prominent corners, apex with small median emargination, apical flanges short and separate; tegmen more or less parallel-sided in basal two-thirds, weakly narrowed to base, narrowed to apex, apical fourth curved downward, with subapical ventral cleft, medioventral process long, its apex narrowly truncate, projecting beneath about one-fourth from base; basal piece about one-fourth tegmen length (broken in type specimen); median lobe about one-third tegmen length, filamentous portions of proximal apodemes one-half the length of thick portions.

Remarks.

This species is best diagnosed by the complete frontal stria with the antennal bosses only weakly prominent, the complete lateral submarginal pronotal striae, long recurved arms of anterior submarginal pronotal stria, and the complete 4th elytral stria. Specimens from Amapá and Manaus tend to have the lateral submarginal pronotal stria abbreviated posteriorly. We limit the type series to those specimens from localities in coastal French Guiana.

Etymology.

This species’ name refers to the rather elongate, narrowly incised prescutellar impression.