Apecholinus fraternus (Fairmaire, 1891)

Smetana, Aleš & Hu, Fang-Shuo, 2019, The genera Agelosus Sharp, 1889 and Apecholinus Bernhauer, 1933 in Taiwan (Coleoptera: Staphylinidae: Staphylinini: Staphylinina), Zootaxa 4638 (3), pp. 379-388 : 383

Apecholinus fraternus (Fairmaire, 1891)

( Figs 6–10 , 20, 24 )

fraternus Fairmaire, 1891 : ccxii (description; Ocypus ); Smetana, 2018:2322 (entire bibliography; synonymy; redescription)

All pertinent information about the species may be found in Smetana (2018). Male and female sexual characters are illustrated in Figs 6–10 and the habitus is in Fig. 20 .The species is at present known from mainland China and from Taiwan. It is the only Taiwanese species of the genus lacking tomentose spots on the body, and to have functional wings.

Material studied. TAIWAN:: “ 22-X-2017 ♀ TAIWAN: Chiayi County Nanxi Forest road 11.2 k B.H. Ho leg.) / Fang-Shuo collection”, 1 spec. ( FSHC) ; Taiwan: Hualien, provincial Highway 8 [in Chinese], 140.5~141 K (8A-3) 12.VI.2010, leg. W.P. Chan ”, 1 spec. ( TARI) ; TAIWAN: Nantou County, Sun Link Forest Recreation Area [in Chinese] (23.6355088, 120.7907667) C.R. Chen leg., / Fang-Shuo collection”, 2 spec. ( CNC, FSHC) ; “ Taiwan: Nantou Tatachia , Tataka [in Chinese] 06–12.V.2008, leg. C.-S. Tung ”, 1 spec. ( TARI) ; “ 13-V-1014 TAIWAN: Nantou Co., Ren’ai Township Beidongyan Mt . F.S. Huang leg. / Fang-Shuo collection”, 1 spec. ( FSHC) ; “order Coleoptera Nan- tou, Huisun Forest Area [in Chinese], Pitfall Trap 0-3 1998 (y) 4.24, 4456”, 1 spec. ( NCHU) ; same, Pitfall trap E-3, 1999 (y) 8-2, 6697”, 1 spec. ( NCHU) ; same, Pitfall Trap 9-6, 1999 (y) 8.7. 7253”, 1 spec. ( NCHU) ; same. Pifall Trap G-2 1999 (y) 8.2, 6121”, 1 spec. ( NCHU) ; “ 03-VIII-2018 / TAIWAN: Taichung City, Daxue mt. Y.H. Ho leg. / Fang- Shuo collection”, 1 spec. ( FSHC) ; “ 18.VII.2014 TAIWAN: Taichung City, Anmashan 27k (alt. 1700m) Y. Hsiao leg. / Fang-Shuo collection”, 1 spec. ( FSHC) ; “ Lantashan FORMOSA V.1936 col. Y. Miwa ”, 1 spec. ( TARI) .

Geographical distribution. Agelosus fraternus is at present known from mainland China (Guangxi, Guizhou, Henan, Hubei, Hunan, Shaanxi, Sichuan and Yunnan) and from Taiwan (Chiayi, Hualien, Nantou and Taichung counties).

Bionomics. Little is known about the collecting circumstances of the Taiwanese specimens, except that some were taken from pitfall traps, but nothing is known about the habitat the traps were set in. The specimen from Sun Link Sea Forest, collected by C. R. Chen was taken from under a rock near a creek. Apecholinus imitator was collected in the same locality by the same collector.

Figures

FIGURES 1–7. 1–5. Agelosus auricomus: 1, tergite 10 of male genital segment; 2, sternite 9 of male genital segment; 3, aedoeagus, parameral view; 4, apical portion of paramere; 5, tergite 10 of female genital segment. 6–7. Apecholinus fraternus: 6, tergite 10 of male genital segment; 7, sternite 9 of male genital segment.

FIGURES 8–15. 8–10. Apecholinus fraternus: 8, aedoeagus, parameral view; 9, apical portion of underside of paramere with sensory peg setae; 10, tergite 10 of female genital segment. Apecholinus imitator: 11, tergite 10 of male genital segment; 12, sternite 9 of male genital segment; 13, aedoeagus, parameral view; 14, apical portion of underside of paramere with sensory peg setae. Apecholinus canifer: 15, tergite 10 of male genital segment.

FIGURES 19–24. 19: Agelosus auricomus: holotype, length 21 mm. 20: Apecholinus fraternus, length 20.0 mm. 21: Apecholinus imitator, holotype, length 22.0 mm. 22: Apecholinus canifer: paratype, length 20.0 mm. 23: Agelosus auricomus, right mandible. 24: Apecholinus fraternus, left mandible.