Astenus (Eurysunius) goeki, Anlaş, 2017

Anlaş, Sinan, 2017, On The Subgenus Eurysunius Reitter Of Turkey Iv. A New Species From Southwestern Anatolia With A Key To Species (Coleoptera: Staphylinidae, Paederinae, Astenus), Acta Zoologica Academiae Scientiarum Hungaricae 63 (1), pp. 45-51 : 46-48

Astenus (Eurysunius) goeki sp. n.

( Figs 1–6 )

Typematerial – Holotype: TURKEY: m “TR – Antalyaprovince, Finike, Alacadağ, 1810 m, 36°26’12”N, 30°02’22”E, 20.VIII.2015, leg. Yağmur & Örgel / Holotypus m Astenus (Eurysunius) goeki sp. n. det. S. Anlaş 2016 ” ( AZMM). Paratypes: TURKEY: 1 f, same data asholotype ( AZMM); 2 m , 1 f, Antalyaprovince , Finike, Alacadağ, 1620 m, 36°26’10”N, 30°02’25”E, 19.III.2016, leg. Anlaş & Yağmur.

Etymology – ThespecificepithethonorsProf. Dr. AliGök, Isparta, aspecialiston Chrysomelidae , whohascarriedoutimportantentomologicalresearchesinTurkey.

Description – HabitusasinFigure 1 . Body 4.5–4.7 mmlong. Coloration: headreddish brown, pronotumandelytrareddish, withtheposteriorareaslightlylighter; abdomen blackishbrownwiththenarrowposteriormarginsofthetergitesandtheapexsomewhat paler, legsandantennaereddish.

Headtransverse, 1.22 timesaswideaslong ( Figs 1–2 ); dorsalsurfaceconvex, with verydense, averagesize, granulosebutrathershallowpunctures; intersticesreducedto narrowridges; pubescenceshortandreddishyellow. Eyesrelativelysmall, indorsalview distinctlyshorterthanpostocularregion. Antennaemoderatelyslender, 1.1 mmlong, an- tennomereIIIapproximately 2.2 timesaslongaswide; antennomeresV–Xoblong ( Fig. 1 ).

Pronotumtransverse, approximately 1.20 timesaswideaslong ( Figs 1–2 ); slightly widerthanhead; widestatanteriorangles, narrowedposteriorly; anteriorandposterior angleseachwithalongsetaeoflittlemorethanhalfthelengthofthelateralmarginofthe pronotum; posteriormarginconvex; dorsalsurfacewithpronouncedimpressions; microsculpturebarelynoticeable; punctationsimilartothatofhead, butdenser, notgranulose, surfacesomewhatmoreshinythanthatofhead; pubescenceofsimilarlengthasthatof head, butlessfineandmoreconspicuous.

Elytradistinctlytransverseandshort ( Figs 1–2 ), about 1.70 timesaswideaslong andapproximately 0.70 timesaslongaspronotum; microsculptureabsent; punctation denseanddistinctlygranulose, intersticesonaverageapproximatelyaswideasdiameter ofpunctures; pubescencereddishyellow, moredistinctthanthatofheadandpronotum; posteriormarginofeachelytronwith 5–6 longblacksetae. Hindwingstotallyreduced.

Abdomenapproximatelyaswideascombinedwidthofelytra ( Fig. 1 ), widestatsegmentV, segmentsIII–VItransverse, tergitesIII–Vslightlymorethantwiceaswideaslong; punctationverydenseandveryfine; intersticeswithdistinctfinemicrosculpture; pubescencebrown; posteriormarginoftergiteVIIwithpalisadefringe.

m – sterniteVIIinposteriormedianareaslightlydepressedandwithsomemodified darkandshortsetae, posteriormarginweaklyconcave ( Fig. 3 ); sterniteVIIIdeeplyand acutelyincisedposteriorly, pubescenceunmodified ( Fig. 4 ); aedeagusapproximately 0.65 mmlongandasinFigures 5–6 .

Comparativenotes – Thespeciesisdistinguishedfromallitsconsubgeners by the male sexual characters, especially by the ventral process of the aedeagus, whichisofdifferentshape, particularlyinlateralview. Inaddition, thenewspeciesdiffersfromallspeciesinthewesternAnatoliabyadifferent coloration (seekeytotheTurkish Eurysunius speciesbelow).

Distributionandbionomics – Thenewspecieswascollectedfromthe Alacadağ, insouthwestofAntalyaprovince, ingrasslandataltitudesof 1620 and 1810 m. They were found in the nests of Tetramorium sp. , which supports pastobservationssuggestingthatthissubgenusisassociatedwiththeseants.

Figures

Figs 1–6. Details of Astenus (Eurysunius) goeki sp. n.: 1 = habitus, 2 = forebody, 3 = male sternite VII, 4 = male sternite VIII, 5 = aedeagus, lateral view, 6 = aedeagus, ventral view. Scale bars: 0.5 mm for Figs (1–2) and 0.2 mm for Figs 3–6