Macilentus micidus OPITZ, 2017a (Figs 14, 40, 71, 90, 107)

Macilentus micidus OPITZ 2017a: 67.

Holotype: ♀. Argentina,SantiagodelEstero,LagoMuyo, 29.III.22. IV.1957, col. R. Golbach (IMLA). Paratypes: 1 specimen. Argentina: Santiago del Estero, Lago Muyo, 29.III.22. IV.1957, col. R. Golbach (WOPC).

Diagnosis: From superficially similar specimens of Oncochelyna barrigai, Macilentus micidus specimens are distinguishable by their subsecuriform terminal maxillary and labial palpomeres.

Description: This species was adequately described and illustrated by OPITZ (2017a: 67).

Additional characteristics involve: Antenna as in Fig. 14, pronotum as in Fig. 40, elytral asetiferous punctation striate, epipleural margin serrulate along its entire length, habitus as in Fig. 90, and aedeagus as in Fig. 107.

Variation: Size: Length 5.0-6.0 mm; width 2.0-2.3 mm.

Distribution (Fig.71): This species is known only from Argentina.