Operclipygus olivensis, 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 : 259-260

Operclipygus olivensis sp. n. Figs 67 G–HMap 24

Type locality.

PERU: Junín:11km NE Puerto Ocopa, Los Olivos [11°7.0'S, 74°15.52'W].

Type material.

Holotype female: "PERU: Junín, 11km NE Puerto Ocopa, Los Olivos. 1,200m 11°3.00'S, 74°15.52'W, Flight intercepts 26-27.iii.2009. A.K. Tishechkin. AT 1081"/ "Caterino DNA Voucher, Extraction: MSC-2151, Species: Opercl . ~KU2010.5.3, Extraction Date: viii.10.2011" / "Caterino/Tishechkin Exosternini Voucher EXO-00677" (FMNH).

Diagnostic description.

Length: 2.40 mm, width: 2.09 mm; body piceous, broadly rounded; frons shallowly depressed at middle, with fine, sparse ground punctation; frontal stria with sides divergent, rounded, narrowly interrupted over antennal bases, arcuate across front; supraorbital stria fine, rounded dorsad, detached from sides of frontal stria; epistoma moderately convex; labrum about twice as wide as long, asymmetrically emarginate apically; left mandible untoothed, right with small, subacute basal tooth; pronotum lacking prescutellar impression, with fine, sparse ground punctation, with a few faint, shallow lateral pronotal punctures; anterior margin of pronotum not projecting at middle; marginal pronotal stria broadly interrupted behind head; submarginal pronotal stria continuous, complete along lateral and anterior margins, marginal bead convex; median pronotal gland openings just over half pronotal length behind anterior margin; elytra with two complete epipleural striae, outer subhumeral stria complete, inner subhumeral stria fine, present in apical two-thirds, fragmented basally, striae 1-3 complete, 4th and 5th striae similar in length, present in about apical third, sutural stria present in apical two-thirds; prosternal keel very weakly projecting at base, carinal striae complete, broadly separated at base, meeting in anterior arch; anterior metaventral margin very weakly emarginate, marginal stria narrowly interrupted; mesometaventral stria broadly arched forward nearly to marginal mesoventral stria, slightly sinuate laterally, continued obliquely posterolaterad toward middle of metacoxa, more or less complete; 1st abdominal ventrite with two abbreviated lateral striae; inconspicuous fovea present near inner corner of metacoxa; propygidium with fine, inconspicuous ground punctation and irregularly round, shallow punctures over most of disk, separated by about one-third their diameters; pygidium with very fine but dense ground punctation, with few slightly coarser punctures in basal third; completely lacking marginal pygidial sulcus or foveae. Male not known.

Remarks.

While numerous external characters suggest that this species belongs in the Operclipygus fossipygus group, it lacks any indication of a marginal pygidial sulcus (Fig. 67H). It is unfortunate that no male is known, as the distinctive aedeagus of the group would help to solidify its placement here. However, phylogenetic analyses underway, including DNA sequences for this species, do support a close relationships to other members of the fossipygus group.

Etymology.

This species is named for the village of Los Olivos, its type locality.