Stenus perpropinquus, 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 : 1436

Stenus perpropinquus nov.sp. ( Figs 5 , 26 , 51 )

Type material: Holotypus () and 7, 9 - paratypes: TAIWAN: Hualien Hsien: Taroko N. P., Nanhushi Hut , 2220m, 8.V.1990, A. Smetana (T 48) . Paratypes: 6: as HT, 12.V.1990, idem (T 55) ; 1: ibidem 2200m, 11.V.1990, idem (T 53) ; 2, 6: Ridge SE Nanhushi Hut, 2700m, 11.V.1990, idem (T 52).- HT and PTT in coll. Smetana (Ottawa), PTT also in cP and cTang .

Description:Sameasin S. perpusillus nov.sp. (see above).

Length: 2.4-2.9mm (forebody: 1.3-1.4mm).

PM of the HT: HW: 27.7; DE: 14; PW: 20.5; PL: 20; EW: 24.8; EL: 21; SL: 16.

Male: Ventral characters as in S. perpusillus . Aedeagus (fig. 26), median lobe triangulary narrowed toward rounded apex, expulsion hooks connected medially; parameres longer than median lobe, with 7-8 setae in apical quarter.

Female: Sternite 8 obtusely triangular at posterior margin. Valvifer with a moderately long tooth apicolaterally. Spermatheca (fig. 51).

Comparative notes: In most respects very similar to S. perpusillus , but the abdominal punctation denser and slightly less fine: punctures on tergite 4 as large as basal cross section of antennal segment 3, interstices distinctly smaller than punctures, punctures of tergite 7 slightly larger than one eye facet near medial eye margin, interstices distinctly smaller than punctures.- A reliable identification of this species is only possible by examining the sexual characters.

Etymology: Since this species is extremely close to S. perpusillus I name it " perpropinquus " (Lat.= very close).

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 17-29: Ventral aspect of aedeagus of Stenus perpusillus nov.sp. (17, PT), S. sugayai nov.sp. (18, 19: Anmashan, PTT), S. perpinguis nov.sp. (20, T 28, PT), S. perspicabilis nov.sp. (21, Lalashan, PT), S. perpastus nov.sp. (22, T 92, PT), S. mysterialis PUTHZ (23, near Tadongshan), S. pervenustus nov.sp. (24, T 138, PT), S. persculptus nov.sp. (25, T 95, PT), S. perpropinquus nov.sp. (26, T 52, PT), S. cirriostentans nov.sp. (27, PT), S. perpauper nov.sp. (28, Fenchifu, PT), S. persculpturatus nov.sp. (29, T 101, PT). – Scale bar = 0.1mm (17= 18, 19, 20= 21-29).

Figs 42-54: Ventral aspect of aedeagus (42-45), paraglossa (46, 47), metasternum (48), spermatheca (49-54) of Stenus perpunctus nov.sp. (42, T 69, PT), S. perscitus nov.sp. (43, T28, PT), S. pertricosus nov.sp. (44, T 61, PT), S. perfectus nov.sp. (45, T 119, PT), S. perpauperculus nov.sp. (46, 52, PTT), S. pilicornis FAUVEL (47, 48), S. mysterialis PUTHZ (49), S. perpusillus nov.sp. (50), S. perpropinquus nov.sp. (51, T 52, PT), S. perpauper nov.sp. (53,T 60, PT), S. perpastus (54, T 91, PT). – Scale bar = 0.1mm (42=43-45).