Stenus pervilis, 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 : 1442

Stenus pervilis nov.sp. ( Figs 8 , 31 , 58 )

Type material: Holotype () and 13, 4 - paratypes: Taiwan: Nantou Hsien: Nankaoshan trail, Yuenhai Hut , 2350m, 4.V.1992, A. Smetana (T 112). Paratypes: 38, 21: ibidem, 2000-2150m, 8.V.1992, idem (T 120).- HT and PTT in coll. Smetana (Ottawa), PTT also in cT and in cP.

Description: About as in S. persubtilis nov.sp.

Length: 2.4-3.0mm (forebody: 1.3-1.4mm).

PM of the HT: HW: 27.5; DE: 14.5; PW: 20.3; PL: 21; EW: 25.5; EL: 20.5; SL: 16.

Male: Ventral characters as in S. persubtilis . Aedeagus (fig. 31), apical portion of median lobe triangularly pointed, expulsion hooks connected medially; parameres with 8-9 apical setae.

Female: Sternite 8 and Valvifer as in the compared species. Spermatheca (fig. 58), about as in S. persubtilis .

In nearly all respects extremely similar to S. persubtilis , only the punctation on tergite7 is slightly finer and less dense, interstices often as large as punctures.

Comparative notes: This new species is clearly distinct from S. persubtilis by the aedeagus.

Etymology: Since this species is so closely resembling S. persubtilis I name it " pervilis " (Lat.= very cheap).

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).