Operclipygus fusistrius, 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 : 150-153

Operclipygus fusistrius sp. n. Figs 39 E–G 40EMap 15

Type locality.

COSTA RICA: Heredia: La Selva Biological Station 10°26'N, 84°1'W].

Type material.

Holotype male: "COSTA RICA: Heredia, Est.Biol. LaSelva. 10.26°N, 84.01°W. F.I.T. 23 June 1998 C.Carlton & A.Tishechkin, leg."/ “LSAM0046456” (FMNH). Paratypes: (20): 1: same data as type; same data as type, except as noted: 1: 19.vi.1998, (LSAM), 2: 21.vi.1998 (LSAM, FMNH), 1: 22.vi.1998 (LSAM), 1: 25.vi.1998 (LSAM), 1: 27.vi.1998 (LSAM), 3: 29.vi.1998 (LSAM, MSCC, AKTC), 1: 5-8.vi.2001, FIT, S. Chatzimanolis (SEMC), 1: 2-5.vi.2001, FIT, S. Chatzimanolis (SEMC), 1: 11-14.vi.2001, FIT, S. Chatzimanolis (CMNC), 2: 28.ii.1992, FIT, W. Bell (SEMC), 1: 3.iii.1992, FIT, W. Bell (SEMC), 2: 5-8.iii.2001, FIT, E.G. Riley (TAMU), 1: 21-28.iii.1988, W.E. Steiner, J.M. Hill, J.M. Swearingen, J.M. Mitchell (USNM); 1: 10kmW. Puerto Viejo, 170m, 2-5.iii.1991, FIT, H. & A. Howden (CHSM).

Other material.

COSTA RICA: Heredia: 1: Parque Nac. Braulio Carrillo, Est. Magsasay, 264600, 531100, 200m, i.1991, M. Barrelier, (INBIO); Cartago: 1: Parque Nac. Barbilla, Turrialba, 2km despues del Rio Dantas, 400m, 17-28.xi.2000, FIT, W. Arana (INBIO); Guanacaste: 1: Parque Nac. Guanacaste, 9km S Santa Cecilia, Est. Pitilla, 700m, vii.1995, FIT, C. Moraga, P. Rios, (INBIO), 1: 27.vii-14.viii.1992, C. Moraga, (INBIO); Limón: 1: Area Cons. Tortuguero, Sector Cerro Cocori, Fca. de E. Rojas, 150m, v.1991, E. Rojas (INBIO), 1: vi.1991, E. Rojas (INBIO), 1: vii.1991, E. Rojas (INBIO), 1: xii.1992, E. Rojas (INBIO), 1: iv.1993, E. Rojas (INBIO), 1: v.1993, E. Rojas (INBIO), 1: vi.1993, E. Rojas (INBIO), 1: Oeste de R.B. Hitoy Cerere, Finca el Tucan, 100-200m, 14-21.viii.2001, FIT, W. Arana (INBIO); Puntarenas: 1: Rancho Quemado, Peninsula de Osa, 200m, xii.1991, F. Quesada (INBIO), 1: vi.1992, F. Quesada (INBIO), 2: ix.1992, F. Quesada (INBIO), 1: x.1992, F. Quesada (INBIO); 1: Res. Biol. Carara, Est. Quebrada Bonita, 50m, vi.1993, R. Guzman (INBIO), 1: v.1994, J. Saborio (INBIO), 1: xi.1994, R. Guzman (INBIO); 1: Golfito, Est. Agujas, Sendero Zamia, 300m, 21-30.vi.2000, A. Azofeifa (INBIO); 1: Est. Esquinas, Peninsula de Osa, x.1993, M. Segura (INBIO); 1: Parque Nac. Corcovado, Est Agujas, Golfito, C. Rincon, 745m, 12.ii.2000, FIT, A. Azofeifa (INBIO). NICARAGUA: Rio San Juan: 1: env. of Ref. Bartola, El Castillo, 22-25.ii.2000, FIT, secondary rainforest, Barbero E. & Penati F. (CHFP); 1: Refugio Bartola, 60km SE San Carlos, 10°58.40'N, 84°20.30'W, 100m, 28-30.v.2002, FIT, R. Brooks, Z. Falin, S. Chatzimanolis (SEMC). PANAMA: Colón: 1: San Lorenzo Forest, STRI crane site, 9°17'N, 79°58'W, 24-25.v.2004, FIT, A.K. Tishechkin (GBFM); 1: Parque. Nac. Soberania, Pipeline Rd., 09°07'N, 79°45'W, 27.v.1995, FIT, J. Jolly, C. Chaboo (SEMC); Darién: 1: Cana Biological Station, 7°45'18"N, 77°41'6"W, 550m, 3-7.vi.1996, FIT, J. Ashe, R. Brooks (SEMC); Panamá: 1: Old Plantation Rd. 6.9km S Gamboa, 09°05'N, 79°40'W, 80m, 7-22.vi.1995, FIT, J. Ashe, R. Brooks (SEMC); 1: Nusagandi Sta., Ina Igar Trail, 09°21'N, 78°59'W, 12.v.1994, FIT, D. Windsor (SEMC).

Diagnostic description.

This species is very similar to the preceding, differing in only a few characters, as follows: length: 1.44-1.68 mm, width: 1.19-1.34 mm; frontal stria with central portion straighter, more transverse; coarser lateral pronotal punctures more numerous and conspicuous; lateral metaventral stria directed more posteriorly; mesoventrite and 1st abdominal ventrite with conspicuous transverse waves of microsculpture; propygidium with secondary punctures larger, shallower, slightly sparser, separated by almost half their diameters; pygidium appearing shorter, partly due to more deeply impressed apical marginal sulcus; secondary pygidial punctures similarly coarse, but tending to be more concentrated toward basal margin. Male genitalia: very similar to Operclipygus diffluens (see Figs 40 A–D, I), but T8 (Fig. 40E) with faint submarginal desclerotization around apical emargination.

Remarks.

Operclipygus fusistrius and the following two species exhibit a broad, desclerotized margin around the apical emargination of T8 (Fig. 40E), an apparently strong synapomorphy, although no consistent external characters unite all of them. The combination of this type of 8th tergite, the presence of a few lateral pronotal punctures (Fig. 39E), and uniformly convex frons will distinguish Operclipygus fusistrius from the other two.

Etymology.

The name of this species refers to its apically widened elytral striae.