Ocypus, Zhou, 2017

Zhou, Hong-Zhang, 2017, Taxonomy of the subgenus Ocypus Leach (Coleoptera: Staphylinidae: Staphylinini) and three new species from China, Zootaxa 4312 (2), pp. 293-310 : 295

Key to species of the subgenus Ocypus s. str. from China

(Improved based on Smetana, 2007)

1. Visible tergites 4 and 5 with yellow tomentose pubescence.....................................................2

- Visible tergites 4 and 5 without yellow tomentose pubescence................................................. 3

2. Dorsal surface of head covered with yellow tomentose pubescence.................. Ocypus (s. str.) weisei Harold, 1877

- Dorsal surface of head not covered with yellow tomentose pubescence........... Ocypus (s. str.) miwai ( Bernhauer, 1943)

3. Apical portion of median lobe simple in ventral view, finger like, not gradually narrowed toward apex ( Figs. 1-2 F, 2-2 F, 3-2 F)................................................................................................. 4

- Apical portion of median lobe not finger like in ventral view................................................... 6

4. Head narrow and elongate, only slightly wider than long (ratio<1.10) ( Fig. 1-1 A); paramere without sensory peg setae ( Figs. 1-1 D, 1-2 G)................................................................... Ocypus (s. str.) liui sp. nov.

- Head distinctly wider than long (ratio>1.20)................................................................5

5. Aedeagus shaped as in Figs. 3-1 B-C, 3-2 B-D; paramere reaching apex of median lobe................................................................................................... Ocypus (s. str.) pterosemanticus sp. nov.

- Aedeagus shaped as in Figs. 2-1 B-C, 2-2 B-D; paramere not reaching apex of median lobe................................................................................................ Ocypus (s. str.) aglaosemanticus sp. nov.

6. Aedeagus with apical portion of median lobe relatively wide, and paramere gradually narrowed towards apex; apical portion of paramere not covering either side of apical portion of median lobe in ventral view ( Smetana, 2011, Fig. 8)....................................................................................... Ocypus (s. str.) puetzi Smetana, 2011

- Apical portions of paramere dilated into lancet-shape, or covers left side of apical portion of median lobe................7

7. Legs uniformly rufobrunneous. Apical portion of both median lobe and paramere dilated into lancet-shape ( Smetana, 2007, Fig. 3 ). Aedeagus as in Smetana, 2007, Figs. 3 , 4............................... Ocypus (s. str.) umbro Smetana, 2007

- Legs predominantly dark. Apical portions of both median lobe and paramere not dilated into lancet-shape in ventral view...8

8. Sensory peg setae on underside of paramere moderately numerous, mostly situated on apical portion of paramere, only a few situated on lateral margins ( Smetana, 2007, Fig. 13). Aedeagus as in Smetana, 2007, Figs. 11-13.............................................................................................. Ocypus (s. str.) zopyrus Smetana, 2007

- Underside of paramere with numerous sensory peg setae, extending along lateral margins of paramere...................9

9. Apical portion of paramere relatively narrow; groups of sensory peg setae on left and right margins rather close to each other ( Smetana, 2007, Fig. 17); apical portion of median lobe long, narrow, with subacute apex ( Smetana, 2007, Fig. 16). Aedeagus as in Smetana, 2007, Figs. 15-17.......................................... Ocypus (s. str.) thericles Smetana, 2007

- Apical portion of median lobe wide, with subacute apex (Fig. 4-2 F). Paramere relatively wide, with obtuse apex; groups of sensory peg setae on left and right margins distinctly separated from each other (Figs. 4-1 D, 4-2 G). Aedeagus as in Figs. 4-1 B, C, 4-2 B-D.......................................................... Ocypus (s. str.) rhoetus Smetana, 2007

Figures

FIGURE 1 - 1. Ocypus (s. str.) liui sp. nov.: A. habitus of species (2.0 mm); B. aedeagus, lateral view; (0.5 mm); C. aedeagus, ventral view (0.5 mm); D. underside of apical portion of paramere (0.5 mm); E. second gonocoxite of female genital segment (0.5 mm). (Scale in parentheses).

FIGURE 1 - 2. Ocypus (s. str.) liui sp. nov.: A. male tergite 10; B and D. aedeagus, lateral view; C. aedeagus, ventral view; E. female tergite 10; F. apical portion of median lobe, ventral view, paramere removed; G. underside of apical portion of paramere; H. male sternite 9; I. second gonocoxite of female genital segment; J. male sternite 8 (Scale bars = 0.50 mm).

FIGURE 1 - 3. Ocypus (s. str.) liui sp. nov.: A. head of male; B. head of female (Scale bars = 2.0 mm).