Stenus aequus, Feldmann, 2020

Feldmann, Benedikt, 2020, A new species of Stenus from Syria and additional records of the genus from the Middle East (Coleoptera, Staphylinidae, Steninae), Linzer biologische Beiträge 52 (1), pp. 245-251 : 247

Stenus aequus PUTHZ, 1977 ( Figs 7-8 )

T y p e m a t e r i a l e x a m i n e d: Paratype ♀: " Liban, 28.III.75, env. Damour, Besuchet / Paratypus ♀ / Stenus aequus n.sp. det. V. Puthz 1976 / coll. Puthz" (SMNS).

M a t e r i a l e x a m i n e d: LEBANON: 1♀, Rayfoun , ca. 33°58'N, 35°42'E, ~ 990 m, mixed oak forest, pitfall trap, 15.III.2013, leg. Reuter (cFel) ; 1♂, 1♀, same data, but 13.III-15.IV.2013 (cFel, SMNS) ; 2♂♂, same data, but 3-20.XI.2013 (cFel, cAss) ; 1♂, same data, but III.2014 (cFel) ; 1♂, same data, but IV.2015 (cFel) ; 1♀, same data, but 14.II.-31.III.2016 (cFel) ; 1♀, same data, but 24.I.-18.II.2017 (cFel) ; 1♀, same data,but 28.II.-5.III.2017 (cFel) ; 1♀, same data, but 18-30.III.2017 (cFel) ; 1♀, same data, but 14-30.IV.2017 (cAss) ; 1♀, same data, but 18.XII.2017 - 11.I.2018 (cFel) ; 1♂, 1♀, same data, but 11-23.I.2018 (cFel) ; ♂, 1♀, same data, but 11-28.II.2018 (cFel) ; 1♀, same data, but 20.III.-20.IV.2018 (cFel) ; 2♀♀, same data, but XI.2018 (cFel, cAss) ; 1♂, Rachaya , Tannoura, ca. 33°29'N, 35°48'E, 900 m, oak forest, V.2016, leg. Reuter (cFel) .

The original description of S. aequus is based on three female type specimens from the area south of Beirut, Lebanon ( PUTHZ 1977). Up to today, no additional records have been reported. In the material from Raifoun (in all about 20 specimens) the variation of the punctation and particularly of the microsculpture of the pronotum and elytra is pronounced.

The previously unknown male primary sexual characters are illustrated in Figs 7-8 . The spermatheca is figured by ASSING (2003: figure 18).

Figures

Figs 1-8: Stenus scoupyi (1-6) and S. aequus (7-8): (1) habitus; (2-3, 7-8) aedeagus in dorsal view; (4) male sternite IX; (5) valvifer; (6) spermatheca. Scale bars: 1: 1.0 mm; 2-8: 0.1 mm.