Protoconnus magnus, Jałoszyński, 2018

Jałoszyński, Paweł, 2018, Revision of the Neotropical genus Protoconnus Franz (Coleoptera: Staphylinidae: Scydmaeninae), Zootaxa 4392 (1), pp. 41-82: 74-75

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Protoconnus magnus

sp. n.

Protoconnus magnus   sp. n.

( Figs 66 View FIGURES 62–67 , 80–81 View FIGURES 76–83 , 101 View FIGURE 101 )

Type material. Holotype: ECUADOR (Napo Province): ♂, two labels: "ECUADOR 50, Napo Prov. / Cosanga vic., Yanayacu / Station, Bamboo hill trail (sifting / litter), 2000-2200 m / 00°35'S, 77°53'W / 5 XII 2009, leg. R. RUTA" [white, printed], " PROTOCONNUS   / magnus   m. / P. JAŁOSZYŃSKI, 2018 / HOLOTYPUS" [red, printed] (MNHW). Paratype: 1 ♂, "ECUADOR 50, Napo Prov. / Cosanga vic., Yanayacu / Station, hill above station, / sifting litter, 2000-2200 m / 00°35'S, 77°53'W / 3 XII 2009, leg. R. RUTA" [white, printed], with a standard yellow "Paratypus" label (cPJ).

Diagnosis. BL 1.13–1.23 mm; body stout, elytra 1.67–1.79 times as broad as strongly transverse pronotum; frons in male between supraantennal tubercles flat, broad and densely covered with shallow and unevenly distributed punctures; vertex unmodified, nearly flat and with posterior margin straight in its median portion; pronotal base with distinct pits and groove; lateral pronotal carinae distinct in posterior half; humeral carinae distinct, relatively sharply marked; aedeagus in ventral view with basal capsule narrowing distad but slightly constricted, distal region rapidly narrowed and moderately slender, broadly but shallowly constricted in proximal half, so that a relatively short flame-like apical portion is delimited; apex slightly asymmetrical, subtriangular and pointed, very weakly curved ventrad; parameres conspicuously broadened distad.

Description. Body of male ( Fig. 66 View FIGURES 62–67 ) strongly convex, brown, covered with setae distinctly lighter than cuticle; BL 1.13–1.23 mm.

Head broadest at very large, strongly convex and coarsely faceted eyes, HL 0.18–0.20 mm, HW 0.26–0.28 mm; tempora in lateral view as long as 1/6 of the longest diameter of eye; vertex nearly flat, posterior margin straight in its median portion, laterally forming indistinct angles with short rounded tempora; frons flat and broad between small supraantennal tubercles. Punctures on frons and vertex inconspicuous, except for area between supraantennal tubercles, which is densely covered with shallow and diffuse, irregularly distributed punctures; setae short, sparse and suberect. Antennae slender, AnL 0.55–0.58 mm, about half as long as body, club distinctly delimited; antennomere I twice as long as broad, II about 1.5 × as long as broad, III and IV each about as long as broad, V –VII each slightly elongate, VIII about as long as broad, IX and X each slightly transverse, XI much longer than X, about 1.5 × as long as broad.

Pronotum strongly transverse, nearly semicircular, broadest shortly in front of base; PL 0.25–0.28 mm, PW 0.35–0.38 mm. Anterior and posterior margins weakly convex, lateral margins weakly rounded; lateral carinae distinct and sharp in posterior half; transverse antebasal groove and five pits distinct. Punctures on pronotal disc inconspicuous; setae sparse, short, suberect.

Elytra much more convex than pronotum, oval, broadest in front of middle; EL 0.70–0.75 mm, EW 0.63 mm, EI 1.12–1.20; humeral carinae sharply marked. Punctures and setae similar to those on pronotum.

Legs moderately long and slender, unmodified.

Aedeagus ( Figs 80–81 View FIGURES 76–83 ) moderately slender; AeL 0.28 mm; in ventral view basal capsule distinctly longer than distal region, slightly narrowed distad and with shallow constriction; distal region laterally indistinctly delimited from sides of basal capsule, broad, arrow-shaped, with shallow constriction in basal half which delimits flame-like apical half with narrow, slightly asymmetrical and pointed apex, in lateral view distal half weakly curved ventrad; in lateral view area above parameral bases forming a short angulate convexity; parameres strongly divergent distad, conspicuously broadened, each with one apical and one subapical seta of similar length, in one paramere an additional tiny seta is visible in subapical region.

Female unknown.

Distribution. North-central Ecuador ( Fig. 101 View FIGURE 101 ).

Etymology. The name magnus   refers to the large body of this species.

Remarks. Protoconnus magnus   is most similar (both in external structures and the shape of the aedeagus) to P. ecuadoranus   ; differences were listed in remarks for the latter species.