Operclipygus novateutoniae, 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 : 156-157

Operclipygus novateutoniae sp. n. Figs 40 G–H, L41 D–EMap 15

Type locality.

BRAZIL: Santa Catarina: Nova Teutonia [27°11'S, 52°23'W].

Type material.

Holotype male: "Nova Teutonia, Sta. Catharina, BRAZ. X:20:1959 Fritz Plaumann leg."/ "FMNH-INS 0000069171" (FMNH). Paratypes (3): same data as type, except as noted: 1: 13.v.1951, with Acromyrmex (FMNH), 1: xi.25.1953 (FMNH), 1: xi.20.1958 Berlese floor litter (UFPR).

Diagnostic description.

Length: 1.59-1.87 mm, width: 1.22-1.44 mm; body rufobrunneus, elongate oval; frontal stria with central portion connected to sides, barely arcuate, transverse; anterior submarginal pronotal stria barely recurved posterad; pronotal disk with ~20 fairly conspicuous coarse lateral punctures; elytra with outer subhumeral stria present only in apical half, inner subhumeral stria absent, striae 1-3 complete, 4th stria present in apical half to two-thirds, 5th stria present in apical half, sutural stria present in apical three-fourths; elytral striae 3-5 not expanded apically; mesoventral disk and 1st abdominal ventrite lacking microsculpture; lateral metaventral stria extending posterolaterad toward outer corner of metacoxa, not appreciably curved; 1st abdominal ventrite with two lateral striae moderately close, subparallel in basal half, diverging in posterior half, inner turned posterad, outer turned laterad, abbreviated, disk with fine series of small punctures along posterior margin; ventrites 2-4 similar but with larger punctures; propygidium with small round punctures sparsely but uniformly separated by nearly their diameters; pygidium with ground punctation less dense than that of propygidium, with shining impunctate pygidial surface visible between, slightly coarser punctures uniformly interspersed, not concentrated along basal margin; marginal sulcus of pygidium complete, deeply impressed, crenulate along outer margin, slightly removed from margin at middle. Male genitalia (Figs 40 G–H, L): similar in many respects to those of Operclipygus ibiscus , with accessory sclerites present, T8 submarginal desclerotization shallow, distinct, sides of S8 straight, convergent, with narrow apical guides; differing in having S9 elongate, with more distinct median sclerotization, lacking apical emargination, apical flange uninterrupted; tegmen with sides rounded, widest near middle, narrowed evenly to base and apex, medioventral process short, rounded, projecting beneath about one-third from base, apical half of tegmen with strong ventral curvature.

Remarks.

The shortened 4th dorsal stria (Fig. 41D), frons with evenly arcuate frontal stria, and deeply impressed pygidial sulcus (Fig. 41E) which is slightly removed from the margin at middle will distinguish this species from the preceding two genitalically similar species.

Etymology.

This species is named for its type (and sole known) locality, Nova Teutonia in Santa Catarina, Brazil.