Bolitogyrus pseudostrigifrons Brunke, 2022

Brunke, Adam J., 2022, Revision of rove beetle genus Bolitogyrus Chevrolat (Staphylininae, Cyrtoquediini). Supplement 1, ZooKeys 1096, pp. 1-16 : 1

Bolitogyrus pseudostrigifrons Brunke sp. nov.

Figs 1E , 2B, D, F

Bolitogyrus strigifrons (Wendeler): Brunke and Solodovnikov, 2014 (misidentification, in part)

Type locality.

Tlanchinol, 43 km SW Huejutla de Reyes, Hidalgo, Mexico.

Type material.

Holotype (male, CNC): Mex: Hdgo., Tlanchinol, 43 km SW Huejutla, 14.VI.-4.VIII.1983, S.&J. Peck, 1500 m, cloud forest FIT [typed label] / Bolitogyrus pseudostrigifrons Brunke, des. Brunke, 2021 [red label].

Paratypes (4, CNC; 1 UAEH): same data as holotype (2 males, 2 females, CNC); Hidalgo: Zacualtipán, Camino a Sto. Domingo [trail to Santo Domingo], 20°38'00.7"N, 98°34'00.5"W, 1830 m, Bosque mixto? o mesofilo? [=mixed? or cloud forest?] pert. [=disturbed], en troncos podridos [in rotten logs], 16.VIII.2003, J. Asiain y J. Márquez (1 male, UAEH).

Etymology.

The species epithet refers to the similarity to its sister species, B. strigifrons (Wendeler).

Diagnosis.

Within the Strigifrons group (for diagnosis, see Brunke and Solodovnikov (2014)): strigulose sculpture of elytra present but restricted to small lateral patch; posterior protuberances of head not creating expansive impunctate areas; abdominal tergite VI (but not VII) with disc impunctate medially. Bolitogyrus pseudostrigifrons is most similar to B. strigifrons but can be easily recognized externally by the lack of an impunctate medial area on tergite VII and the strigulose sculpture on the elytra limited to a lateral patch. The paramere is also markedly different (Fig. 2F ), with the overall shape expanded subapically and with disorganized, marginal rows of peg setae that are often doubled; it is also shorter than the median lobe, while it is longer in B. strigifrons . Additionally, the apex of the median lobe in ventral view is broader and less strongly convergent (Fig. 2D ).

Description.

Measurements ♂ (n = 4): HW/HL 1.54-1.60; PW/PL 1.42-1.56; EW/EL 1.20-1.35; PW/HW 1.11-1.13; ESut/PL 0.82-0.90; forebody length 3.26-3.58 mm.

Measurements ♀ (n = 2): HW/HL 1.50-1.55; PW/PL 1.46-1.50; EW/EL 1.32-1.44; PW/HW 1.10; ESut/PL 0.82-0.88; forebody length 3.26-3.37 mm.

As in the description of B. strigifrons given by Brunke and Solodovnikov (2014) except: head distinctly more transverse ( B. strigifrons , HW/HL = 1.38); elytra with strigose microsculpture confined to lateral patch; tergite VII without clear impunctate medial area; aedeagus with paramere distinctly shorter than median lobe; median lobe in ventral view broader, less strongly convergent to apex (Fig. 2D ); median lobe in lateral view with apex slightly swollen, knob-like (Fig. 2B ); paramere spoon-shaped, apical part broadest subapically, with marginal row of peg setae disorganized and with several setae in row doubled (Fig. 2F ), parameral setae thicker and longer.

Distribution.

This species is known from two rather close localities in Hidalgo, Mexico.

Bionomics.

Specimens were collected in cloud forests (1500-1830 m), using an FIT and from a rotten log.

Comments.

In Brunke and Solodovnikov (2014), the only non-type specimen of B. strigifrons available (male from Hidalgo, listed as a paratype above) had the tip of the paramere missing. Although there were some external differences with the holotype that were noted, a conservative approach was taken, and they were treated as conspecific. A newly available series of specimens from Hidalgo (CNC), in good condition, revealed that two species are involved that differ both externally and in male genitalia. This is the species figured in Brunke and Solodovnikov (2014) as B. strigifrons (fig. 6F, 13E).

Figures

Figure 1. A-C habitus of Bolitogyrus erythrurus (Kraatz) A non-type, Panama B syntype, " Nova Grenada " C non-type, " Nova Grenada " D, E pronotum, lateral view D B. viridescens Brunke E B. pseudostrigifrons Brunke F antenna of B. nigropolitoides Brunke. Scale bars: 1 mm (A, B); 0.5 mm (D-F).

Figure 2. Male genitalia A, C, E Bolitogyrus strigifrons (Wendeler) B, D, F B. pseudostrigifrons Brunke G, I B. nigropolitus Smetana H, J B. nigropolitoides A, B, G, H median lobe in lateral and C, D ventral view. E, F, I, J inner face of paramere, apex. Scale bars: 0.5 mm (A-D, G, H); 0.1 mm (E, F, I, J).