Operclipygus lama Mazur, 1988

Caterino, Michael S. & Tishechkin, Alexey K., 2013, A systematic revision of Operclipygus Marseul (Coleoptera, Histeridae, Exosternini), ZooKeys 271, pp. 1-401 : 321-324

Operclipygus lama Mazur, 1988 Figs 85 F–H87A–EMap 31

Operclipygus lama Mazur, 1988: 295.

Type locality.

ECUADOR: Napo: Puerto Misahuallí [1°02'S, 77°40'W].

Type material.

Holotype male: Ecuador, Napo, Misahualli, II/19/1983; not examined (LUND).

Other material.

BOLIVIA: Cochabamba: 6: Est. Biol. Valle Sajta, Univ. San Simon, 67.5km E Villa Tunari, 17°06'19"S, 64°46'57"W, 300m, 9-13.ii.1999, FIT, lowland rain forest, F. Genier (CMNC), 2: 7-9.ii.1999, FIT, lowland rain forest, F. Genier (CMNC); La Paz: 1: Guanay, Uyapi, 15°25'S, 67°46'W, 20.x.1999, rotting logs, G. Carrasco (CHND). ECUADOR: Orellana: 1: Yasuní Res. Stn., 00°40'28"S, 76°38'50"W, 215m, 5-10.ix.1999, FIT, Primary forest, E.G. Riley (TAMU); same data except as noted: 2: 20-29.vi.1999, FIT, C.E. Carlton & A.K. Tishechkin (LSAM), 1: 28-5.vii.1999 (LSAM), 3: 22-28.vi.1999 (LSAM), 2: 12-20.vii.1999 (LSAM), 2: 26.vii-4.viii.1999 (LSAM), 1: 26.vii-4.viii.1999 (LSAM), 3: 5-12.vii.1999 (LSAM), 1: 23-30.vi.1999 (LSAM), 1: 5-11.vii.1999 (LSAM), 2: 28. vi– 5.vii.1999 (LSAM), 1: 14-23.vii.1999 (LSAM), 1: 28. vi– 5.vii.1999 (LSAM), 1: 11-18.vii.1999 (LSAM); 1: Yuturi Lodge, Rio Napo, 0°35'54"S, 76°2'18"W, 270m, 20-21.iii.1999, FIT, R. Brooks & D. Brzoska (SEMC); 16: Tiputini Biodiversity Station, 0.6376°S, 76.1499°W, 4-9.vi.2011, FIT, M.S. Caterino & A.K. Tishechkin, DNA Extract MSC-2174 (SBMNH, USFQ), 4: 5-25.ix.2000, D.J. Inward & K.A. Jackson (BMNH); 8: Parque Nac. Yasuní, Via Maxus at Puente Piraña, 0°39.5'S, 76°26'W, 14-20.vii.2007, FIT, A.K. Tishechkin (AKTC), 1: 20-24.vii.2008, FIT, A.K. Tishechkin (AKTC); 2: Payamino Research Station, 0°29'36.01"S, 77°17'29.15"W, 300m, 30.vii-12.viii.2007, FIT, tropical rainforest, CPDT Gillett (BMNH); Sucumbíos: 1: Sacha Lodge, 0°28'14"S, 76°27'35"W, 270m, 21-24.iii.1999, FIT, R. Brooks (SEMC). PERU: Ayacucho: 1: La Mar, Santa Rosa, 640m, 8-15.ix.1976, R. Gordon (USNM); Loreto: 2: 1.5km N Teniente Lopez, 2°35.66'S, 76°06.92'W, 210-240m, 20.vii.1993, FIT, R. Leschen (SEMC); 9: 1.5km N Teniente Lopez, 2°35.66'S, 76°06.92'W, 210-240m, 18.vii.1993, FIT, R. Leschen (SEMC); Madre de Dios: 6: 24.x.1982, rotten palm flowers, L. Watrous & G. Mazurek (FMNH); 1: Manu National Park, Zona res., Rio Manu, Cocha Juarez, trail nr. Manu Lodge, 18-24.ix.1991, FIT, A. Hartman (FMNH); 6: Manu National Park, Cocha Salvador, 12°0'13"S, 71°31'36"W, 310m, 20-21.x.2000, FIT, R. Brooks (SEMC); 1: Manu National Park, Pantiacolla Lodge, Alto Madre de Dios River, 12°39'22"S, 71°13'55"W, 400m, 23-26.x.2000, FIT, R. Brooks (SEMC); 9: Manu National Park, Cocha Cashu Bio. Sta., 11°53'45"S, 71°24'24"W, 350m, 17-19.x.2000, FIT, R. Brooks (SEMC); 1: Manu National Park, Rio Alto Madre de Dios, Pantiacolla Lodge, 12°39.3'S, 71°13.9'W, 14-19.xi.2007, FIT, D. Brzoska (SEMC); 1: Amazonas Lodge, N Atalaya, 12°52.2'S, 71°22.6'W, 480m, 10-13.xi.2007, FIT, D. Brzoska (SEMC); 1: Tambopata, Reserva Cuzco Amazonico, 15km NE Pto. Maldonado, 12°33'S, 69°03'W, 200m, 16.vii.1989, Buchenavia fruit fall, J. Ashe & R. Leschen (SEMC), 8: 24.vi.1989, FIT (SEMC), 22: 22.vi.1989, FIT (SEMC), 3: 20.vi.1989, FIT (SEMC), 6: 16.vii.1989, FIT (SEMC), 2: 19.vii.1989, FIT (SEMC), 5: 13.vii.1989, FIT (SEMC), 5: 13.vi.1989, FIT (SEMC), 1: 30.vi.1989, FIT (CHSM), 3: 28.vi.1989, FIT (SEMC), 4: 26.vi.1989, FIT (SEMC), 7: 17.vi.1989, FIT (SEMC), 5: 15.vi.1989, FIT (SEMC), 1: 16.vi.1989, Agaricales (SEMC), 1: 27.vi.1989, flat ascomycete (SEMC).

Diagnostic description.

Length: 1.93-2.18 mm, width: 1.93-2.00 mm; body piceous, rounded, convex; frons weakly depressed, frontal stria complete, continuous with complete supraorbital stria; pronotum with lateral submarginal stria complete, continued anteriorly by anterior marginal stria, which is then interrupted for the distance of the outwardly arcuate anterior pronotal emargination; anterior submarginal pronotal stria detached, barely recurved posterad at apices, median pronotal gland openings just beyond the ends of this stria; pronotal disk with few or no lateral punctures and lacking prescutellar impression; elytron with two complete epipleural striae, outer subhumeral stria entire, sinuate at middle, inner subhumeral stria absent, striae 1-3 complete, 4th stria present in apical half, 5th stria present in apical third, sutural stria present in apical three-fourths; prosternal keel projecting into mesoventral emargination, prosternal carinal striae connected in wide anterior arch, about one-fifth short of presternal suture; prosternal lobe short, marginal stria continued laterally by series of punctures; mesoventral marginal stria usually interrupted; mesometaventral stria arched forward in middle, metaventral disk lacking punctures; 1st abdominal ventrite with two striae on each side, outer stria frequently interrupted; abdominal ventrites 3 and 4 with single series of very large punctures at sides; propygidium with fine, sparse ground punctation and a dense group of deep punctures slightly removed from all margins; pygidium with ground punctation denser than that of propygidium with coarser punctures concentrated along basal margin, more sparsely scattered elsewhere; marginal pygidial stria complete, finely crentulate. Male genitalia (Figs 87 A–E): accessory sclerites absent; S8 with apical guides strongly developed from base to apex; S9 desclerotized along midline, with deep apical emargination and small, separate apical flanges; tegmen with basomedial process divided into two lateral processes; median lobe short, broad.

Remarks.

This is a rather isolated species, with the divided medioventral processes of the aedeagus (Fig. 87E) found in no other species. Externally, it is most easily recognized by the large deep punctures on ventrites 3 and 4 (Fig. 85G), and the small but deep punctures on the propygidium (Fig. 85H).

Although we did not study the type specimen, we have seen numerous specimens determined by the species’ author, all agreeing in characters with the original description, and to this widespread, more or less invariable species.