Xantholinus (Calolinus) penicillatus, Assing, Volker, 2007

Assing, Volker, 2007, On the Xantholinini of Turkey and adjacent regions (Coleoptera: Staphylinidae: Staphylininae), Zootaxa 1474, pp. 1-54 : 26-28

Xantholinus (Calolinus) penicillatus sp. n.

( Figs. 49–58 )

Type material. Holotype: ɗ, " TR - Muġla, 21, 1750 m, 30 km NE Fethiye, Boncuk Daġı, Koru, 36°50'56N, 29°14'04E, 8.X.2002, V. Assing / Holotypus ɗ Xantholinus penicillatus sp. n. det. V. Assing 2006" (cAss). Paratypes: 1ɗ, "Petrowitz-Ressl, Reise nach Kleinasien 1960 / Umg. Akschehir, 30.5.1960 / Fuß des Sultan-Dagh / im Detritus unter Steinen / Xantholinus rufipennis Er. / rufipennis Er. " ( NHMW); 1ɗ, " Turcia mer. occ.: Mugla, Gökova, 11.– 24.04.1998, leg. H. Winkelmann / Xantholinus puthzi Bord., Bordoni det. 2002" (cSch).

Description. Measurements (in mm) and ratios (range; n=3): AL: 1.89–1.92; HL: 1.25–1.39; HW: 1.03– 1.16; PW: 0.95–1.09; PL: 1.40–1.54; EL: 0.94–1.03; EW: 1.31–1.42; AW: 1.18–1.33; TiL: 0.77–0.83; TaL: 0.65–0.69; ML: 1.25–1.42; TL: 8.8–9.8; HL/HW: 1.19–1.22; PW/HW: 0.93–0.96; PL/PW: 1.41–1.48; EL/PL: 0.63–0.68; EW/PW: 1.27–1.38; AW/EW: 0.90–0.99; TiL/TaL: 1.19–1.26.

Habitus as in Fig. 49 . Distinctly bicoloured species, but coloration somewhat variable: head, pronotum, and abdomen dark brown to black; elytra dark yellowish, yellowish brown, or bright reddish; legs yellowish brown; antennae reddish brown.

Head moderately oblong (see measurements and ratio HL/HW); maximal width at some distance behind eyes; lateral margins weakly convex in dorsal view ( Fig. 50 ); eyes of moderate size ( Fig. 51 ), weakly projecting from lateral outline of head, slightly less than 1/3 the length of postocular region in dorsal view; dorsal surface with sparse and relatively coarse puncturation and interspersed micropunctures, median dorsal area almost without coarse punctures; microsculpture absent in median dorsal area, in lateral areas sometimes with shallow traces of microsculpture. Antenna with antennomeres V–X approximately 1.5 times as wide as long.

Pronotum slightly narrower than head (see ratio PW/HW), moderately tapering posteriad; lateral margins almost straight in dorsal view; dorsal series usually composed of 9 punctures; microsculpture absent ( Fig. 50 ). Elytra shorter and distinctly wider than pronotum (see ratios EL/PL and EW/PW), distinctly dilated posteriad ( Fig. 50 ); puncturation mostly well-defined, interstices on average as wide as or slightly wider than diameter of punctures. Hind wings apparently fully developed.

Abdomen as least slightly narrower than elytra, widest at segments VI/VII; puncturation fine; all tergites with shallow, but distinct transverse microsculpture; posterior margin of tergite VII with palisade fringe. ɗ: posterior margin of tergite VIII weakly concave and with numerous long marginal setae ( Fig. 52 ); posterior margin of sternite VIII weakly convex; aedeagus with distinctive internal structures; in dorsal view with 3 series of distinctly sclerotised spines, a relatively short distal left series with very long, curved, and moderately stout spines, a long central series with 9–11 very stout, short, broad-based, and curved spines, and a right series with conspicuously long and slender uncurved spines, distally with an additional brush-like cluster of long, slender, and apically curved spines ( Fig. 57 ).

Comparative notes. Xantholinus penicillatus is separated from other Calolinus species especially by the morphology of the aedeagus, from the two preceding species also by somewhat shorter head, by more prominent eyes, relatively longer and posteriorly more distinctly dilated elytra, and longer hind wings. The aedeagus to some extent resembles the illustration of that of the holotype of X. puthzi in Bordoni (1979), but is distinctly larger (see measurements) and has internal structures of different morphology; for a new illustration of the aedeagus of X. puthzi see Fig. 99 .

Etymology. The name (Lat., adj.: with a brush) refers to the characteristic distal brush-like structure of the aedeagus.

Distribution and bionomics. The species is currently known from three localites in Muġla and Konya ( Fig. 58 ). The holotype was sifted from the roots of grass and herbs at an altitude of 1750 m.

Figures

FIGURE 58. Distributions of Xantholinus ibex sp. n. (filled circles), X. penicillatus sp. n. (open circles), X. puthzi Bordoni (open square), and X. marasicus sp. n. (filled square) in Turkey.

FIGURES 49 – 57. Xantholinus penicillatus sp. n. (49 – 53, 57: holotype; 54 – 56: paratype): 49 — habitus; 50 — forebody; 51 — head in lateral view; 52 — posterior part of male tergite VIII; 53 – 54 — aedeagus in dorsal view; 55 – 56 — aedeagus in lateral view; 57 — distal internal structures of aedeagus. Scale bars: 49 – 51: 1.0 mm; 53 – 56: 0.5 mm; 52, 57: 0.2 mm.

FIGURES 94 – 100. Xantholinus chersonesicus sp. n. (94 – 97), X. reitteri Coiffait, holotype (98), and Vulda ottomana (Cameron), holotype (99 – 100): 94, 99 — forebody; 95, 98, 100 — aedeagus; 96 — internal structures of aedeagus in squeeze preparation; 97 — distal part of internal structures of aedeagus in squeeze preparation. Scale bars: 94, 99: 1.0 mm; 95 – 98: 0.5 mm; 100: 0.2 mm.