Sunius cokelezensis, Anlaş, 2015

Anlaş, Sinan, 2015, On the genus Sunius Curtis, 1829 of Turkey I. Two new micropterous species from central western Turkey (Coleoptera: Staphylinidae, Paederinae), Turkish Journal of Zoology 39 (5), pp. 799-803 : 799-801

Sunius cokelezensis sp. nov. ( Figure 1 )

Type material. Holotype: TURKEY: ♂ TR – Denizli Province, Çal, Çökelez Mountain , 1575 m, 38°02′48″N, 29°22′11″E, 15.IV.2014, leg. Örgel / Holotypus ♂ Sunius cokelezensis sp. nov. det. S. Anlaş 2014 (cAZMM).

Description. Small species, 2.3 mm. Habitus as in

Figure 1A . Coloration: forebody uniformly reddish-brown, with the head and posterior area of elytra darker; abdomen dark brown, with the paratergites paler brown; legs yellowish-brown; antennae reddish-brown.

Head ( Figures 1A and 1B ) oblong, approximately 1.15 times as long as wide; punctation coarse, well defined, and relatively sparse, in lateral area slightly denser than in mediodorsal area; interstices without microsculpture; eyes small, weakly projecting from lateral outline of head, postocular region in dorsal view approximately 3 times as long as eyes. Antennae not slender and long, approximately 0.80 mm long.

Pronotum ( Figures 1A and 1B ) approximately 0.90 times as wide as head, and about 1.10 times as long as wide; widest at anterior angles, distinctly narrowed posteriorly, microsculpture almost absent; punctation dense, except for the impunctate median line, and about as coarse as that of head.

Elytra ( Figures 1A and 1B ) approximately as wide and at suture about 0.75 times as long as pronotum, humeral angles marked; punctation ill defined, much finer and shallower than that of pronotum; interstices without distinct microsculpture. Hind wings completely reduced.

Abdomen ( Figure 1A ) about 1.20 times as wide as elytra, widest at segments VI–VII; punctation relatively dense and fine; interstices with microsculpture; pubescence blackish; posterior margin of tergite VII without palisade fringe.

♂: Sternite VII without modified pubescence; posterior margin very weakly concave medially ( Figure 1C ), sternite VIII without modified pubescence and without tubercle, posterior incision small and not very deep ( Figure 1D ); aedeagus ( Figures 1E–1G ) approximately 0.41 mm long, weakly sclerotized, apical part of the ventral process in lateral view broad but apex acute, ending sharply; internal sac in lateral view with short black structure, in ventral view with two shaped knobs, but without sclerotized spines in both lateral and ventral views.

Comparative notes. The species is distinguished from all its congeners by the completely different shape of the ventral process of the aedeagus. For illustrations of the male sexual characters of these species, see the figures by Assing (2001, 2003, 2005a, 2005b, 2005c, 2006, 2011b).

Based on the similarly derived morphology of the male primary and secondary sexual characters, S. cokelezensis is closely related to S. sandiklicus sp. nov. The new species is distinguished from S. sultanicus by the smaller body, different coloration ( S. sultanicus : head reddish to dark brown; pronotum reddish to reddish-brown; elytra reddish; abdomen dark brown; legs and antennae reddishyellow), more oblong pronotum, slightly more concave in the middle posterior margin of male sternite VII, slightly smaller posterior incision of male sternite VIII, and different shape of aedeagus ( S. sultanicus : ventral process very slender and acute, especially in lateral view. S. cokelezensis : ventral process in lateral view broad but apex acute, ending sharply, in ventral view with two shaped knobs).

Etymology. The specific epithet is derived from the name of Çökelez Mountain, where the type locality is situated.

Distribution and bionomics. The new species was collected in only one locality from Çökelez Mountain, Denizli Province, in grassland at an elevation of 1575 m a.s.l. This species is most probably endemic to Çökelez Mountain in Denizli Province.

Figures

Figure 1. Details of Sunius cokelezensis sp. nov. A- Habitus; B- forebody; C- male sternite VII; D- male sternite VIII; E and F- aedeagus in lateral view; G- aedeagus in ventral view. Scale bars: 0.5 mm (A and B); 0.1 mm (C–G).