Stenus persimplex, Puthz, 2012

Puthz, V., 2012, On the Stenus LATREILLE 1797 from Taiwan with non-spotted elytra (Coleoptera, Staphylinidae) (327 Contribution to the Knowledge of Steninae), Linzer biologische Beiträge 44 (2), pp. 1431-1475 : 1444-1445

Stenus persimplex nov.sp. ( Figs 6 , 37 , 63 )

Type material: Holotype () and 6, 3 - paratypes: Taiwan: Ilan Hsien : Shan-Mi Lake, 24 o 22’43’’N, 121 o 44’12’’E, 1100m, 10.V.1995, A. Smetana (T 177) . Paratypes: 1: ibidem, 1120m, 9.V.1995, idem (T 174) ; 1: ibidem, 1110m, 10.V.1995, idem (T 185).- HT and PTT in coll. Smetana (Ottawa), PTT also in cP .

Description:Asin S. perturbator nov.sp.

Length: 2.3-3.0mm (forebody: 1.3-1.4mm).

PM of the HT: HW: 26.8; DE: 13.5; PW: 19.8; PL: 20; EW: 24; EL: 19; SL: 14.

Male: Metasternum shallowly impressed, moderately coarsely, densely punctate. Sternites 3-5 simple, sternite 6 with finer and denser punctation and pubescence medially, sternite 7 slightly shallowed in posterior middle, medial punctation and pubescence fine and very dense. Sternite 8 with a moderately broad apical emargination (fig. 6). Sternite 9 with long apicolateral teeth. Aedeagus (fig. 37), apical portion of median lobe short, triangularly narrowed, apex rounded, expulsion hooks contiguous medially; parameres much longer than median lobe, with about 7-9 apical setae.

Female: Sternite 8 and Valvifer as in S. persubtilis . Spermatheca (fig. 63), infundibulum about 3x as long as broad.

In most respects very similar to S. persubtilis , but the median portion of frons less elevated, the elytral punctation slightly coarser, the abdominal punctation distinctly sparser, interstices mostly distinctly larger than diameter of punctures.

Comparative notes: This species also should be identified by the genitalia; see also the key.

Etymology: This species has no very remarkable characters, therefore I name it " persimplex " (Lat.= very simple.

Figures

Figs 1-16: Sternite 8 of male (1-8, 13, 14) and of female (9, 10), posterior portion of sternite 9 of male (11, 12), anterior portion of aedeagus (15, 16) of Stenus hirtellus SHARP (1), S. piliferus MOTSCHULSKY (2), S. perpastus nov.sp. (3, PT), S. perpinguis nov.sp. (4, PT), S. perpropinquus nov.sp. (5, PT), S. persimplex nov.sp. (6, PT), S. perturbator nov.sp. (7, PT), S. pervilis nov.sp. (8, PT), S. persculptus nov.sp. (9, PT), S. perspicabilis nov.sp. (10, PT), S. sugayai nov.sp. (11, PT), S. perodiosus nov.sp. (12, PT), S. ascendor (13, 15, PT), S. hanami HROMÁDKA (14, 16, HT). – Scale bar = 0.1mm (1= 2-10; 11=12; 13=14; 15=16).

Figs 30-41: Ventral aspect of aedeagus (30-34, 37-41) outline of apical portion of aedeagus (35, 36) of Stenus persubtilis nov.sp. (30, T 146, PT), S. pervilis nov.sp. (31, T 12, PT), S. perversor nov.sp. (32, T 59, PT), S. permodestus nov.sp. (33, T 179, PT), S. perplicatus nov.sp. (34-36: Shouchia, PTT), S. persimplex nov.sp. (37, T 177, PT), S. perodiosus nov.sp. (38, T 85, PT), S. perrarus nov.sp. (39, T 5, PT), S. permolestus nov.sp. (40, T 119, PT), S. pertenuis nov.sp. (41, T 160, PT). – Scale bar = 0.1mm.

Figs 55-69: Spermathecae of PTT of Stenus pervenustus nov.sp. (55, T 138), S. persculptus nov.sp. (56, T 107), S. persculpturatus nov.sp. (57, T 88), S. pervilis nov.sp. (58, T 120), S. sugayai nov.sp. (59, Anmashan), S. persubtilis nov.sp. (60, T 199), S. perplicatus nov.sp. (61, Meifeng), S. perturbator nov.sp. (62, T 187), S. persimplex nov.sp. (63, T 177), S. perrarus nov.sp. (64, Fushan), S. perspicabilis nov.sp. (65, T 144), S. perpinguis nov.sp. (66, T 29), S. perodiosus nov.sp. (67, T 84), S. perpunctus nov.sp. (68, T 72), S. perversor nov.sp. (69, T 59).