Operclipygus plicatus (Hinton, 1935) Hinton, 1935

Caterino, Michael S. & Tishechkin, Alexey K., 2013, A systematic revision of Operclipygus Marseul (Coleoptera, Histeridae, Exosternini), ZooKeys 271, pp. 1-401 : 180

Operclipygus plicatus (Hinton, 1935) comb. n. Fig. 47EMap 17

Phelister plicatus Hinton, 1935a: 591.

Type locality.

Not specified beyond Bahia State, Brazil.

Type material.

Lectotype of undetermined sex, here designated: "Bahia, A.G." / "LECTOTYPE Phelister plicatus Hinton, 1935 M.S.Caterino & A.K.Tishechkin des. 2010" (BMNH). This species was described from an unspecified number of specimens, and the lectotype designation fixes primary type status on the only known original specimen.

Diagnostic description.

This species is extremely similar to Operclipygus farctus and Operclipygus bidessois , differing mainly in the following characters: frontal stria rather evenly, weakly rounded across front; pronotal disk with basal plicae; lateral submarginal pronotal stria present only in apical half to third, obsolete basally; anterolateral pronotal marginal gland opening nearer anterior pronotal angle; elytra with outer subhumeral stria complete, inner subhumeral represented by a fine basal scratch, striae 1-4 complete, 5th stria present in apical fourth, sutural stria present in apical two-thirds; prosternum narrow, carinal striae converging strongly, parallel in apical two-thirds; connected by slightly bulbous anterior arch; posterior edge of prosternal keel emarginate but mesoventral margin not projecting; mesoventral marginal stria interrupted at middle by arched mesometaventral stria; propygidial punctures round, moderately dense basally, becoming both smaller and sparser posteriorly; pygidial punctures very fine and sparse, lacking coarser secondary punctures; marginal pygidial sulcus absent. Male not known.

Remarks.

This species is very similar to Operclipygus bidessois , particularly in the presence of plicae along the basal margin of the pronotal disk (Fig. 47E). Operclipygus plicatus differs primarily in the abbreviation of the lateral submarginal pronotal stria, the diminishing propygidal punctures posteriorly, and in the lack of a marginal pygidial sulcus. This species is only known from the type specimen.