Bolitogyrus marquezi Brunke

Brunke, Adam J. & Solodovnikov, Alexey, 2014, A revision of the Neotropical species of Bolitogyrus Chevrolat, a geographically disjunct lineage of Staphylinini (Coleoptera, Staphylinidae), ZooKeys 423, pp. 1-113 : 66-68

Taxon classification Animalia Coleoptera Staphylinidae

Bolitogyrus marquezi Brunke sp. n. Figs 2F, 5C, 9D, 11E, 12F, 17 D–F, 23I, 26G, 31D (map)

Type locality.

MEXICO, Morelos, Derrame del Chichinautzin.

Type material.

Holotype ♂ (MZFC): MÉXICO: Morelos, Derrame del Chichinautzin (La Pera). Bosque de pino encino [=pine-oak forest]. 2450 m. En troncos caídos [=on fallen logs]. 22.III.2001. JML Col. [white printed label] / Bolitogyrus sp. 1, MZFC [white printed label] / Holotype, Bolitogyrus marquezi Brunke, sp. n. [red printed label].

Paratypes (1 ♂ 1 ♀, SEMC, ZMUC): same data as holotype, 1 ♀ (ZMUC). MEXICO: Guerrero, 71 km NE Atoyac de Alvarez, 1700 m, ex: treefall litter, 25 July 1992, J.S. Ashe, #118, SM0037999, 1 ♂ (SEMC).

Diagnosis.

Head without central protuberance; genital and abdominal segments VIII not distinctly paler than previous segments; elytra with small, poorly impressed punctures (Fig. 9D); abdominal tergites III–VII with lateral patches of short, appressed setae (Fig. 12F).

Description.

Measurements ♂ (n=2): HW/HL 1.36-1.40; PW/PL 1.27-1.28; EW/EL 1.16-1.24; ESut/PL 0.83-0.84; PW/HW 1.07-1.09; forebody length 3.9-4.4 mm.

Measurements ♀ (n=1): HW/HL 1.37; PW/PL 1.37; EW/EL 1.21; ESut/PL 0.90; PW/HW 1.11; forebody length 4.8 mm.

Similar to Bolitogyrus buphthalmus and differing only in the following: head, pronotum and elytra black with bronze metallic reflection; apical antennomere distinctly paler (Guerrero) or not (Morelos); legs nearly entirely yellowish, except for darkened apices of femora and tibiae, and entire to part of hind coxa (male), or legs nearly entirely dark brownish, except paler apices of femora and tibiae; head slightly less transverse than Bolitogyrus buphthalmus ; punctures on head of variable diameter and spacing but distinctly denser than in Bolitogyrus buphthalmus , punctures on disc varying from strongly impressed (Morelos) to barely perceivable (Guerrero); median frontal impression distinct but shallow; entire surface of pronotum with scattered micropunctures; pronotum with pair of depressions but without distinct protuberance in lateral view; elytra with basal elytral ridge re-connected to humerus; elytra with punctures in much smaller depressions compared to those of Bolitogyrus buphthalmus , especially on disc near suture (Fig. 9D); sternites III–V with basal transverse line weakly and bluntly projected posteriad; abdominal sternites with coarse transverse microsculpture in apical half, interspaces wider than lines; microsculpture of dorsal abdomen with small connections between transverse lines (Morelos) or not (Guerrero); mesofemur with distinct spines on lateral face, not obscured by setae; median lobe cylindrical, in lateral view sinuate, with a short, broad and triangular apical portion (Fig. 17E); median lobe in parameral view subparallel and broadly rounded at apex (Fig. 17D); paramere weakly divided near apex or with only median seam, with a pair of short, longitudinal fields of peg setae laterally near apex (Fig. 17F); internal sac with large, horseshoe-shaped sclerite (Fig. 17D); male sternite VIII with transverse basal line distinctly interrupted at middle; male tergite IX with deeper, narrower emargination and base ending more bluntly (Fig. 23I); female tergite X broad, truncate apically, with base fused to accessory sclerite formed from expanded basal margin; female laterotergal sclerites expanded mediad to overlap with tergite X (Fig. 26G).

Distribution.

Figure 31D. The locality of one paratype could not be georeferenced due to vague label data ('71 km NE Atoyac de Alvarez’). Bolitogyrus marquezi is known from Morelos and Guerrero states in Mexico.

Bionomics.

Specimens of this species were collected at 1700-2450 m, in March and July, in treefall litter and in an oak-pine forest on fallen logs.

Etymology.

The first author would like to dedicate this species to his colleague Dr. Juan Márquez Luna (MZFC), the collector of the holotype and female paratype, and someone who shares an interest in this genus.

Comments.

Bolitogyrus marquezi is most similar to and sympatric with Bolitogyrus bechyneorum but can easily be distinguished by the greenish-bronze forebody and finer punctation of the elytra. The holotype and paratype from Morelos state differ markedly from the male paratype from Guerrero in the abdominal microsculpture, punctation of the forebody and the coloration of the apical antennomere. However, the aedeagi of the males are very similar and differ only slightly in the shape of the parameral apex. Further study may reveal Bolitogyrus marquezi to be a complex of species but more male specimens are needed to readdress this.