Three new species and new records of Stenichnodes Franz (Coleoptera Staphylinidae: Scydmaeninae) Author Jałoszyński, Paweł text Zootaxa 2020 2020-05-19 4779 2 289 296 journal article 22035 10.11646/zootaxa.4779.2.10 612343eb-2f73-4265-b5dd-25ae1a5f14b1 1175-5326 3833453 52571CFB-BA39-4B6D-83C5-2DC1BDAE4542 Stenichnodes (s. str.) spinosus sp. n. ( Figs 2–3 , 11–14 ) Type material. Holotype : IVORY COAST : ♂ , two labels: «IVORY COAST Tai / Forêt de Tai 20.X.80 / tamis- age bois mort / Mahnert - Perret» [white, printed], « STENICHNODES (s. str.) / spinosus m. / P. Jałoszyński , 2020 / HOLOTYPUS » [red, printed] ( MHNG ) . Paratype : 1 ♀ , same data as for holotype ( MHNG ) . Diagnosis. Each elytron in male with long apical spine; protarsomere I in male unmodified; antennae relatively thick, antennomeres IX and X each slightly transverse; aedeagus with slender, rod-like parameres, of which one is distinctly longer than the other. Description. Body of male ( Fig. 2 ) elongate and slender, strongly convex, light brown, covered with yellowish vestiture; BL 0.84 mm . Head broadest at large, strongly convex and finely faceted eyes, HL 0.15 mm , HW 0.18 mm ; tempora vestigial; vertex weakly convex and anteriorly confluent with frons; frons slightly flattened, supraantennal tubercles indistinct. Each eye bean-shaped, transverse in relation to the long body axis, with narrow posteromedian emargination. Vertex and frons with fine, inconspicuous punctures; setae fine, nearly recumbent, barely discernible under magnification 100 ×. Antennae relatively robust, with slightly flattened, trimerous clubs, AnL 0.35 mm ; antennomeres I–II strongly elongate, III slightly transverse, IV–VII each about as long as broad, VIII–X each slightly transverse, XI about 1.2 × as long as broad, much shorter than IX and X combined, with rounded apex. Pronotum heart-shaped, broadest near anterior third; PL 0.23 mm , PW 0.20 mm . Anterior and posterior margins weakly rounded, sides in anterior half strongly rounded; posteriorly weakly rounded, not constricted; base with shallow but distinct transverse groove indistinctly deepened at each end. Punctures on pronotal disc inconspicuous, fine and sparse; setae sparse, short and recumbent. Elytra together oval, broadest distinctly in front of middle; EL 0.46 mm , EW 0.35 mm , EI 1.32; humeral calli distinct, elongate; basal impressions shallow but distinct; apices separately rounded, each with long spines ( Fig. 3 ). Punctures on elytra slightly more distinct than those on pronotum, but superficial and inconspicuous; setae sparse, short, suberect. Hind wings present, long. Legs long and slender, unmodified. Aedeagus ( Figs 11–14 ) elongate and with relatively thin walls, in ventral view median lobe slightly asymmetrical, with a group of broad and short apical projections; parameres present, very slender, of unequal lengths, each with one apical seta; AeL 0.20. Female. Externally similar to male, but with rounded elytral apices, lacking spines. BL 0.88 mm ; HL 0.15 mm , HW 0.18 mm , AnL 0.33 mm ; PL 0.23 mm , PW 0.23 mm ; EL 0.50 mm , EW 0.35 mm , EI 1.43. Distribution. Southwestern Ivory Coast . Etymology. The adjective spinosus refers to the apical elytral projections in male. Remarks. Stenichnodes spinosus differs from all congeners in the unusual male dimorphic character, the long spines on elytral apices.