New species and records of Coryphiini from China (Coleoptera: Staphylinidae: Omaliinae) Author Shavrin, Alexey V. Institute of Life Sciences and Technologies, Daugavpils University, Vienibas 13, Daugavpils, LV- 5401, Latvia; e-mail: ashavrin @ hotmail. com Author Smetana, Aleš Agriculture and Agri-Food Canada, Biodiversity, Central Experimental Farm, K. W. Neatby Bldg., Ottawa, ON K text Acta Entomologica Musei Nationalis Pragae 2020 Acta. Ent. Mus. Natl. Pragae 2020-11-09 60 2 591 598 http://dx.doi.org/10.37520/aemnp.2020.040 journal article 10.37520/aemnp.2020.040 1804-6487 5177782 BBEBE695-58A2-4CF2-821D-E2C60DF9EA57 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