Operclipygus juninensis, 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 : 78-79

Operclipygus juninensis sp. n. Fig. 20FMap 7

Type locality.

PERU: Junín: ca. 1 km N Satipo, Sector San Isidro [11°14.51'S, 74°38.98'W].

Type material.

Holotype male: "PERU: Depto. Junín, ~1km N Satipo, Sector San Isidro. 11°14.51'S, 74°38.98'W 730m. Window trap at treefall, 11-12 April 2009. A.V.Petrov" / "Caterino/Tishechkin Exosternini Voucher EXO-01401" (FMNH). Paratypes (31): BRAZIL: Mato Grosso: 1: Querencia, Fazenda São Luiz, 12°38.819'S, 52°22.492'W, 560m, vii.2008, FIT, R.Andrade (CEMT); 2: Cotriguaçu, Fazenda São Nicolau, Mata Norte, 9°49.15'S, 58°15.6'W, 8-14.xii.2010, FIT, F.Z. Vaz-de-Mello (CEMT). Pará: 1:Jacareacanga, xii.1968, M. Alvarenga (UFPR). PERU: Cusco: 2: Consuelo, Manu rd. km 165, 9.x.1982, 10.x.1982, FIT, L. Watrous & G. Mazurek (FMNH); Junín: 1: ~1km N Satipo Sector San Isidro, 11°14.51'S, 74°38.98'W, 730m, 11-12.iv.2009, Window trap, at treefall, A.V. Petrov (AKTC); 2: 11km NE Puerto Ocopa, Los Olivos, 11°3.00'S, 74°15.52'W, 1200m, 30-31.iii.2009, FIT, A.K. Tishechkin (AKTC) DNA Extract MSC-2142; 1: 26-28.iii.2009, Window trap, A.V. Petrov (MUSM); 1: 8km NNE Puerto Ocopa, Rio Perene, Cananeden, 11°06'S, 73°50'W, 1100m, 6.ii.2008, A.V. Petrov (AKTC); 1: 7.5km NE Puerto Ocopa Cananeden, 11°4.9'S, 74°16.1'W, 1180m, 11.i.2007, A.V. Petrov (MUSM); 1: 25km SW Satipo, Kuviriaki, 1100m, 23.i.2007, A.V. Petrov (AKTC); Loreto: 2: Iquitos - Nauta rd., km 58, Rio Itaya, 4°15.738'S, 73°28.052'W, 120m, 5-9.v.2009, Window trap, next to entrance of Eciton burchelli statary bivouac in hollow treee, A.V. Petrov (AKTC); 4: 68km SW Iquitos to Nauta, Rio Itaya, 4°11'S, 73°26'W, 110m, 18-19.i.2008, A.V. Petrov (AKTC, MUSM), 2: 1-3.iii.2008, A.V. Petrov (AKTC), 1: 26-30.ii.2008, A.V. Petrov (AKTC); 2: km 63, rd. Iquitos - Nauta, Rio Itaya, 4°15.205'S, 73°26.074'W, 140m, 8-17.i.2010, A.V. Petrov (AKTC); Madre de Dios: 2: Manu National Park, Manu, 12.5624°S, 70.0930°W, 288m, 2-11.i.2007, pitfall, bamboo forest, J. Jacobs (CASC), 1: 20-29.vii.2006, pitfall, bamboo forest, J. Jacobs (CASC); 1: Manu National Park, Manu, 12.5421°S, 70.1435°W, 292m, 20-29.vii.2006, pitfall, bamboo forest, J. Jacobs (CASC); 1: Los Amigos Field Sta., 12.5421°S, 70.1435°W, 292m, 31.vii-9.viii.2006, pitfall, terra firma forest, J. Jacobs (CASC); 1: Manu National Park, Pantiacolla Lodge, 5.5km NW El Mirador Trail, Alto Madre de Dios River, 12°39'10"S, 71°15'28"W, 500m, 23-26.x.2000, FIT, R. Brooks (SEMC); 1: Manu National Park, Pakitza Bio. Stn., Reserved Zone, Castanal Trail, 11°56'41"S, 71°17'0"W, 317m, 15-16.x.2000, FIT, R. Brooks (SEMC).

Diagnostic description.

This species is extremely similar to Operclipygus sejunctus , differing only in a few characters as follows: length: 1.44-1.75 mm, width: 1.28-1.34 mm; body uniformly rufo-piceous; frons depressed, with coarse punctures intermingled with fine ground punctation; supraorbital stria interrupted; pronotal disk with slightly broader band of lateral punctures; elytra with sutural stria frequently longer, present on apical two-thirds to three-fourths; coarser elytral punctures densest at apex, but with few coarse punctures extending up the apical thirds of interstriae (as they do in Operclipygus pecki ); sterna quite variable, but generally similar to Operclipygus pecki , the mesoventral disk with few coarse punctures at sides; metaventral disk with strong ground punctation, with coarser punctures gradually becoming larger and denser toward metacoxae; secondary lateral metaventral stria longer, extending from mesometaventral suture about halfway to metacoxa; pygidia also as in Operclipygus pecki , with very dense punctation. Male genitalia (Fig. 20F): as in Operclipygus sejunctus except S9 shorter, more markedly expanded to base, with basal margin varied from truncate to broadly rounded, lacking apical emargination, lateral flanges wide and strongly recurved at inner corners; tegmen with sides more or less evenly rounded from base to apex, apex subacute, medioventral process short, wide, slightly sinuate, with strong apical point located just basad tegmen midpoint, projecting beneath; median lobe about one-fourth tegmen length.

Remarks.

This species is very similar externally to Operclipygus pecki and Operclipygus depressus . It can be separated from the former by the lack of any hint of bicoloration (with the pronotum and elytra identical in coloration). From the latter it can only be confidently separated by the shape of the aedeagus (Fig. 20F). Operclipygus juninensis also generally has the outer lateral metaventral stria longer reaching the midpoint of the metaventrite, whereas it is generally very short in Operclipygus pecki and Operclipygus depressus .

Etymology.

We name this species for Junín department, Peru, where the type specimen was collected.