Stenus pertricosus, Puthz, 2012
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publication ID |
https://doi.org/ 10.5281/zenodo.5337424 |
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DOI |
https://doi.org/10.5281/zenodo.8392900 |
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persistent identifier |
https://treatment.plazi.org/id/03831324-7C48-FFCB-FF01-FC843C8EE0F9 |
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treatment provided by |
Carolina |
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scientific name |
Stenus pertricosus |
| status |
sp. nov. |
Stenus pertricosus View in CoL nov.sp. ( Figs 44 View Figs 42-54 , 71 View Figs 70-77 )
Type material: Holotype () and 5, 5 - paratypes: Taiwan: Nantou Hsien: near Tsuifeng , 2200m, 22.VIII.1976, Y. Shibata . Paratypes: 12, 28: same as HT, 28.VII., 22.VIII., 23.VIII.1973, 26.VII., 25.VIII.1974; 28.VII., 29. VII., 18.VIII., 20.VIII., 21.VIII.1976, 23.VII., 2.VIII., 11.VIII.1977, idem ; 1, 2: near Meifeng , 2150m, 13.VIII.1981, idem ; 3, 1: Meifeng , 2130m, 3.V.1991, A. Smetana (T 61) ; 1: ibidem, 10.VII.1993, idem (T 146) ; 2: ibidem, 4.V.1998, idem (T 199).- HT and PTT in coll. Shibata (Tokyo), PTT also in coll. Smetana, cN, cT and in cP .
Description: About as in S. persubtilis nov.sp.
Length: 2.8-3.4mm (forebody: 1.5-1.6mm).
PM of a -PT from T 61: HW: 30; DE: 16; PW: 21.5; PL: 22; EW: 27.3; EL: 24; SL: 17.5.
Male: Metasternum distinctly impressed, moderately coarsely, densely punctate, interstices smaller than half diameter of punctures. Anterior sternites simple, sternite 6 finer and denser punctate and pubescent medially than laterally, sternite 7 with a shallow posteromedian impression, which is very finely and very densely punctate and pubescent. Sternite 8 with a shallow, moderately broad apical emargination (LS: ED= 53:3). Sternite 9 with comparatively short, blackish apicolateral teeth. Aedeagus (fig. 44), median lobe broadened in anterior half, apical portion obtusely angled narrowed, apex small and prominent, expulsion hooks connected medially; parameres slightly longer than median lobe, with about 6-7 apical setae.
Female: Sternite 8 at posterior margin feebly projecting, rounded apically. Valvifer with a short apicolateral tooth. Spermatheca (fig. 71), infundibulum narrow, 3x as long as broad.
Median portion of frons strongly elevated, distinctly extending beyond the level of medial eye margins; pronotum and elytra with deep impressions, punctation coarser than in S. persubtilis , diameter of elytral punctures at least as large as apical cross section of antennal segment 2; abdomen densely punctate, interstices on tergite 7 distinctly smaller than punctures.
Comparative note: This is a relatively large species, it may be distinguished from the close relatives as quoted in the key, best by the sexual characters.
Etymology: Since is it difficult to identify this species I name it " pertricosus " (Lat.= very intricate).
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