Stenus shibataianus Puthz 2011, nov.sp.
Creators: name: Puthz, V
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Stenus
Stenus shibataianus

description: Stenus shibataianus nov.sp. (Figs 35, 101, 110, 112, 120)   
T y p e m a t e r i a l: Holotype and 1, 1 - paratypes: TAIWAN: Kaohsiung Hsien: near Tengchih, 13.VIII.1978, leg. Y. SHIBATA. Paratypes: 1: Nantou Hsien: Lushanwenchuan, 28.V.1980, leg. H. MAKIHARA; 1: Chiai Hsien: Fenchihu, 4.VI.1971, leg. M. NISHIKAWA. HT and PTT in coll. Y. SHIBATA, PTT also in coll. Naomi and in cP.  
D e s c r i p t i o n: Macropterous, black with a faint brownish hue, each elytron with a round reddish spot in posterior middle (fig. 35), moderately shiny, coarsely and very densely punctate; pubescence short, recumbent. Antennae yellowish brown, club infuscate. Maxillary palpi yellowish red, segment 3 infuscate. Paraglossa oval. Legs reddish brown. Clypeus black, labrum blackish brown, moderately densely pubescent.  
Length: 4.3-5.0 mm) (forebody: 2.1-2.2 mm).  
PM of the HT: HW: 37.5; DE: 19; PW: 28.5; PL: 30; EW: 37.5; EL: 38; SL: 29.  
M a l e: Legs simple. Metasternum shallowly impressed, coarsely and densely punctate, smooth interstices smaller than half diameter of punctures (fig. 101). Anterior sternites simple, sternite 6 slightly shallowed and finely punctate posteromedially, sternite 7 with a shallow finely and densely punctate median impression. Sternite 8 apically with a small rounded notch about one tenth as long as the sternite. Sternite 9 pointed apicolaterally. Tergite 10 broadly rounded apically. Aedeagus (fig. 110), apical portion of median lobe obtuse-angled narrowed, expulsion hooks large, internal sac with a weakly sclerotized falgelliform tube, parameres slightly longer than median lobe, with 3+4 apical setae.  
F e m a l e: Sternite 8 rounded apically. Valvifer acute apicolaterally (fig. 120). Tergite 10 rounded apically. Spermatheca (fig. 112), spermathecal collum long-oval, spermathecal duct weakly sclerotized (incomplete in the type specimen?).  
 In many respects similar to S. electristigma, but the head narrower. Elytra broader, size and position of the elytral spots different. Abdominal punctuation about same as in S. electristigma, but the punctuation denser: on tergite 4 interstices are distinctly smaller than diameter of punctures, punctation of tergite 7 much finer than in the compared species, punctures distinctly smaller than eye facets near dorsal eye margins, interstices much larger than punctures, punctuation of tergite 10 fine and sparse.   
 C o m p a r a t i v e n o t e: Also this new species belongs to the S. indubius -group as is shown by the spermatheca. For identification amongst the Taiwanese species see key.   
E t y m o l o g y: This new species is dedicated to its collector, Mr. Y. SHIBATA.
description: Published as part of Puthz, V, 2011, On the Stenus LATREILLE 1797 from Taiwan with spotted elytra including remarks on the S. gestroi-group (Coleoptera, Staphylinidae) (316 Contribution to the Knowledge of Steninae), pp. 565-596 in Linzer biologische Beiträge 43 (1) on pages 582-583, DOI: 10.5281/zenodo.5324778