New species and records of the genus Geodromicus Redtenbacher, 1857 (Coleoptera: Staphylinidae: Omaliinae) from Taiwan Author Smetana, Aleš text Zootaxa 2016 4066 5 591 599 journal article 51163 10.11646/zootaxa.4066.5.7 10a50e95-023c-4d71-bf69-70071162f79e 1175-5326 266479 4D6292DE-EE09-45FE-971C-B3408DC751CD Key to the Geodromicus species of Taiwan 1 Species shorter than 5.0 mm. Elytra approximately as long as wide. Pronotum with wide and deep longitudinal depression. Apical antennomere without constriction................................................................... 2 - Species longer than 5.0 mm. Elytra distinctly wider than long. Pronotum with narrow longitudinal impression. Apical antennomere with well-defined constriction near base (see Hayashi 1992 : Fig. 3 )........................................ 3 2 Head with postocular parts evidently wide and arcuate. Elytra shorter, slightly more than one half times longer than pronotum. Forebody black, abdomen dark brown. Habitus as in Fig. 1 . Larger, body length: 4.50–4.75 mm . Aedeagus wider, parameres exceeding apex of aedeagus ( Fig. 12 )..................................................... G. philydroides sp. n. - Head with somewhat narrower postocular parts. Elytra longer, approximately twice as long as pronotum. Body reddish brown to brown, basal third of elytra bicoloured, yellow-brown to reddish-brown. Habitus as in Fig. 2 . Smaller, body length: 3.30– 4.60 mm . Aedeagus narrower, parameres almost reaching apex of aedeagus ( Fig. 14, 16 )............ G. taiwanensis sp. n. 3 Antennae shorter, reaching half length of elytra. Pronotum of male very large, wide and convex. Body length: 5.0– 6.2 mm . Aedeagus with narrow median lobe ( Hayashi 1992: Figs. 6–7 )............................ G . ohkurai ( Hayashi, 1992 ) - Antennae slightly longer, exceeding half of elytra. Pronotum of male moderately small, narrow and less convex. Body length: 5.1–6.0 mm. Aedeagus with wide median lobe ( Hayashi 1992: Fig. 13 )................... G . formosanus ( Hayashi, 1992 )