Coryphiini, Jakobson, 1908

Shavrin, Alexey V. & Smetana, Aleš, 2020, New species and records of Coryphiini from China (Coleoptera: Staphylinidae: Omaliinae), Acta Entomologica Musei Nationalis Pragae (Acta. Ent. Mus. Natl. Pragae) 60 (2), pp. 591-598 : 597-598

Key to species of Coryphiini of China

1 Gular sutures parallel or diverging anteriad. .............. 2

– Gular sutures converging anteriad. .............................. 5

2 Pronotum longer than wide. Body yellow-brown to reddish-brown. Aedeagus as in Fig. 13 . Body length: 2.80–3.25 mm. Habitus as in Fig. 11 . Far Eastern Russia (Maritime Province), South Korea, China (Jilin, Zhejiang, Shaanxi), Japan (Honshu, Kyushu). ...................... ............................ Boreaphilus japonicus Sharp, 1874

– Pronotum transverse. ..................................................... 3

3 Lateral margins of pronotum finely crenulated, rounded at widest point. Antennomeres VI–X elongate. Aedeagus with narrow, rod-like median lobe ( Fig. 6 ). Body brown. Body smaller: 2.26 mm. Habitus as in Fig. 1 . China (Sichuan). ............................................................ ................... Archaeoboreaphilus paradoxus sp. nov.

– Lateral margins of pronotum coarsely crenulated, sometimes angulate at widest part. Antennomeres VI–X short. Aedeagus with median lobe different, not rodlike. Body reddish-brown, with darker abdomen. Body larger. ................................................................................ 4

4 Head about as broad as pronotum. Lateral margins of pronotum at widest point angulate; crenulation of lateral margins moderately fine. Apical portion of medi- an lobe wide, asymmetrical; apical portion of internal sac with several very long spines (Fig. 534 in ZERCHE 1990). Body length: 3.15 mm. Habitus as in Fig. 536 in ZERCHE (1990). China (Shaanxi). ................................... ................ Caloboreaphilus hammondi Zerche, 1990

– Head slightly broader than pronotum. Lateral margins of pronotum at widest point not angulate; crenulation of lateral margins coarse. Apical portion of median lobe narrow, symmetrical; apical portion of internal sac with wide field of numerous moderately small spines ( Fig. 20 ). Habitus as in Fig. 15 . Body length: 3.50– 4.40 mm. China (Sichuan). .............................................. .............................. Caloboreaphilus concisus sp. nov.

5 Pronotum large, subangulately widened laterally around middle, lateral portions widely explanate. Elytra almost quadrate, with lateral portions explanate and longitudinally impressed in anterior two-thirds. ..................... Haida Keen, 1897 (see SMETANA 2003)

– Pronotum small, evenly rounded laterally, lateral portions not explanate. Elytra elongate, with lateral portions not explanate and not longitudinally impressed in anterior two-thirds. ............................................................ 6

6. Antennomeres IV–X transverse. Aedeagus as in Fig. 4 in LI et al. (2007). Body smaller: 2.30–2.47 mm. Habitus as in Fig. 1 in LI et al. (2007). China (Zhejiang). .... ........................ Coryphium tangi Li, Li & Zhao, 2007

– Antennomeres IV–X elongate. Aedeagus as in Fig. 37 . Body larger: 2.57–2.67. Habitus as in Fig. 28 . China (Shaanxi). Coryphium taibaiense Li, Li & Zhao, 2007

Figures

Figs 11–14. Boreaphilus japonicus Sharp, 1874 (Figs 11–13) and map of distribution of Coryphiini in China (Fig. 14). 11 – habitus; 12 – labrum, dorsal view.13 – aedeagus, parameral view (internal sac is not shown); 14 – map: Archaeoboreaphilus paradoxus sp. nov. (black circle), Boreaphilus japonicus (white circles), Caloboreaphilus hammondi Zerche, 1990 (black star), C. concisus sp. nov. (white star), Coryphium taibaiense Li, Li & Zhao, 2007 (black square), C. tangi Li, Li & Zhao, 2007 (white square), Haida argonautarum Smetana, 2003 (black diamond), H. satoi Smetana, 2003 (white diamond). Scale bars: 1.0 mm (Fig. 11); 0.1 mm (Figs 12–13).

Figs 1–10. Archaeoboreaphilus paradoxus sp. nov. 1 – habitus (holotype); 2 – labrum, dorsal view; 3 – left mandible, dorsal view; 4 – labium and mentum, ventral view; 5 – left maxilla, ventral view; 6 – aedeagus, parameral view; 7 – aedeagus, lateral view; 8 – abdominal tergite VIII, dorsal view; 9 – abdominal sternite IX, ventral view; 10 – abdominal sternite VIII, ventral view. Scale bars: 1.0 mm (Fig. 1); 0.1 mm (Figs 2–10).

Figs 15–27. Caloboreaphilus concisus sp. nov. 15 – habitus (paratype); 16 – labrum, dorsal view; 17 – labium and mentum, ventral view; 18 – left mandible, dorsal view; 19 – left maxilla, ventral view; 20 – aedeagus, parameral view; 21 – aedeagus, lateral view; 22 – male abdominal tergite VIII, dorsal view; 23 – male abdominal sternite IX, ventral view; 24 – male abdominal sternite VIII, ventral view; 25 – female abdominal tergite VIII, dorsal view; 26 – female abdominal sternite IX; 27 – female genital segment, dorsal view. Scale bars: 1.0 mm (Fig. 15); 0.1 mm (Figs 16–27).

Figs 28–37. Coryphium taibaiense Li, Li & Zhao, 2007. 28 – habitus (paratype); 29 – labrum, dorsal view; 30 – labium and mentum, ventral view; 31 – left mandible, dorsal view; 32 – left maxilla, ventral view; 33 – aedeagus, parameral view; 34 – aedeagus, lateral view; 35 – male abdominal tergite VIII, dorsal view; 36 – male abdominal sternite IX, ventral view; 37 – male abdominal sternite VIII, ventral view. Scale bars: 1.0 mm (Fig. 28); 0.1 mm (Figs 29–37).