Scaphobaeocera, CSIKI, 1909

Löbl, Ivan, 2020, Four new Taiwanese species of Scaphobaeocera CSIKI (Coleoptera, Staphylinidae, Scaphidiinae), Linzer biologische Beiträge 52 (1), pp. 327-335 : 332

Key to the Scaphobaeocera of Taiwan

1 Hypomera each with longitudinal stria separating upper oblique surface from lower surface .................................................................................................................................2

- Hypomera lacking longitudinal striae..................................................................................5

2 Antennomere XI long about as antennomeres IX and X combined. Aedeagus with flagellum wide, convoluted, forming three complete loops........................ S. dorsalis LÖBL

- Antennomere XI shorter than antennomeres IX and X combined. Aedeagus with flagellum narrow, bent ........................................................................................................3

3 Tip of parameres reaching posterior tip of median lobe of aedeagus, parameres distinctly widened apically in lateral view ..........................................................................4 Tip of median lobe of aedeagus reaching posterior tip of parameres, parameres not or slightly widened apically................................................................................. S. cyrta LÖBL

4 Proximal sclerites of internal sac narrow, with prominent apophysis............ S. dispar LÖBL

- Proximal sclerites of internal sac wide, with broadly rounded anterior margin, lacking apophysis................................................................................................ S. montana nov.sp.

5 Metaventrite with elongate median impression ................... S. formosana MIWA & MITONO

- Metaventrite without median impression ............................................................................6

6 Aedeagus with flagellum forming three complete loops .............................. S. furva nov.sp.

- Aedeagus with flagellum forming two complete loops .......................................................7

7 Aedeagus with proximal section of flagellum folded and evenly wide ................................. ............................................................................................................... S. insinuata nov.sp.

- Aedeagus with proximal section of flagellum not folded and widened...............................8

8 Aedegus with apices of parameres slightly widened (in lateral view), flagellum slightly widened and simple in proximal section ........................................ S. sp. near gracilis LÖBL

- Aedegus with parameres gradually widened apically (in lateral view), flagellum strongly widened proximally and with bulbous vesicle................... S. tengchinensis nov.sp.