Astenus (Eurysunius) gultekini Anlaş, 2021

Anlaş, Sinan, 2021, On the subgenus Eurysunius Reitter of Turkey VII. Four new species from central Anatolia, and additional records (Coleoptera: Staphylinidae: Paederinae Astenus), Zootaxa 4991 (2), pp. 343-352 : 345-347

Astenus (Eurysunius) gultekini Anlaş , sp. n. ( Figs. 9-16 ; Map 1 )

urn:lsid:zoobank.org:act:8DECD03E-8772-4A8E-984F-8BF20408C472

Type material. Holotype: TURKEY: ♂, ‘‘TR. Kırıkkale, Çelebi, Tilkili 3 km E, 39°33’12”N, 33°30’41”E, 1427 m, 29.VI.2019, leg. Örgel & Köksal / Holotypus ♂, Astenus (Eurysunius) gultekini sp. n. det. S. Anlaş 2021” ( AZMM) . Paratypes: 1♂, same data as holotype ( AZMM) .

Description. Habitus as in Fig. 9 . Body 3.9 mm long. Coloration: head, pronotum and abdomen blackish;

elytra yellowish brown, with area near scutellum and anterior margin infuscate; antennae reddish and legs reddish brown.

In general appearance similar to A. veyseli , but can be distinguished as follows:

Head 1.18 times as long as wide ( Figs 9-10 ), punctation slightly denser than that of A. veyseli , antennae 0.97- 0.99 mm long. Pronotum shorter than wide, approximately 1.1 times as wide as long and slightly wider than head ( Figs 9-10 ). Elytra 1.75 times as wide as long ( Figs 2 A-B), punctation slightly denser than that of A. veyseli . Abdomen narrower than elytra ( Fig. 9 ), 0.92 times as wide as elytra.

♂: sternite VII in posterior median area with some modified dark and short setae, posterior margin concave ( Fig. 11 ); posterior incision of sternite VIII in the middle very narrow and acute ( Fig. 12 ); aedeagus 0.68 mm long and as in Figures 13-16 .

Comparative notes. The new species can be distinguished from all other consubgeners except A. sexsetosus , A. kociani and A. veyseli by the presence of three (rather than two or one) long setae on either of the lateral margins of the pronotum. The new species is separated from these species by the different morphology of the male sexual characters, it is additionally separated as follows:

From A. sexsetosus by the smaller body ( A. sexsetosus : 4.3-4.9 mm), by less transverse head ( A. sexsetosus : head 1.3 times as wide as long and head broader than pronotum), by the much more transverse elytra ( A. sexsetosus : elytra 1.5-1.6 times as wide as long), and by the different shape of the aedeagus both ventral and lateral view, especially apically more stouter in lateral view.

From A. kociani by the smaller body ( A. kociani : 4.6 mm) and antennae ( A. kociani : 1.15 mm), by the much more transverse elytra ( A. kociani : elytra approximately 1.50 times as wide as long), by the different shape of the aedeagus both ventral and lateral view, apically more broader in ventral view.

From A. veyseli by the smaller body ( A. kociani : 4.2-4.6 mm), by the narrower posterior incision in sternite VIII, and by the different shape of the aedeagus both ventral and lateral view, especially apically more thinner in lateral view.

For descriptions and illustrations of these species see Assing (2002, 2015), and also see key to the Turkish Eu- rysunius species.

Etymology. The species is dedicated to Dr. Levent Gültekin, Erzurum, a specialist on Curculionidae , who has carried out important entomological studies in the world.

Distribution and bionomics. The species was collected only one locality from Kırıkkale province ( Map 1 ), in a grassland area at an altitude of 1430 m. The specimens were found in the nests of Tetramorium chefketi Forel, 1911 .

Figures

MAP 1. Distribution of Astenus (Eurysunius) species in Turkey: A. bicoloratus Assing, 2002 (large filled circle), A. brachati Assing, 2011 (large filled triangle), A. goeki Anlaş, 2017 (large open triangle), A. gultekini sp. n (large filled inverted triangle), A. gusarovi Anlaş, 2015 (large open square), A. honazicus Anlaş, 2015 (small filled triangles), A. ilgazi Anlaş, 2016 (small filled squares), A. kirani sp. n (open crosses), A. kociani Assing, 2015 (large filled square), A. kumlutasi Anlaş, 2015 (small open inverted triangles), A. melendizicus Anlaş, 2018 (large open circle), A. neseti sp. n (large open inverted triangle), A. occiduus Assing, 2007 (small hexagons), A. orgeli Anlaş, 2015 (small filled circles), A. paphlagonicus Assing, 2002 (small open squares), A. pelinae Anlaş, 2019 (open stars), A. rhodicus Assing, 2013 (filled cross), A. sandiklicus Anlaş, 2014 (small open triangles), A. sexsetosus Assing, 2002 (large filled hexagon), A. sivasicus Anlaş, 2019 (small filled inverted triangles), A. sultanicus Assing, 2010 (filled stars), A. veyseli sp. n (small open circles).

FIGURES 9–16. Astenus (Eurysunius) gultekini sp. n. 9—habitus; 10—forebody; 11—Male sternite VII; 12—Male sternite VIII; 13, 14—Aedeagus in lateral view; 15, 16— Aedeagus in ventral view. Scale bars: 0.5 mm (Figs. 9-10), 0.2 mm (Fig. 11- 16).

FIGURES 1–8. Astenus (Eurysunius) veyseli sp. n. 1—habitus; 2—forebody; 3—Male sternite VII; 4—Male sternite VIII; 5, 6—Aedeagus in lateral view; 7, 8— Aedeagus in ventral view. Scale bars: 0.5 mm (Figs. 1-2), 0.2 mm (Fig. 3-8).