Thinodromus (Thinodromus) bernhaueri ( Klima, 1904 )

Lee, Seung-Il & Ahn, Kee-Jeong, 2007, The Korean species of the genus Thinodromus Kraatz (Coleoptera: Staphylinidae: Oxytelinae), Zootaxa 1573 (1), pp. 39-50 : 43-47

Thinodromus (Thinodromus) bernhaueri ( Klima, 1904)

( Figs. 2 , 6 , 11, 12, 18, 22, 26, 30, 34, 38, 42)

Trogophloeus (Thinodromus) bernhaueri Klima, 1904: 50 ; Bernhauer & Schubert, 1911: 94; Kashcheev, 1989: 283. Thinodromus bernhaueri: Herman, 1970: 387 ; Smetana, 1975: 163.

Thinodromus (Thinodromus) bernhaueri: Gildenkov, 2000: 692, 2001: 73 ; Smetana, 2004: 534.

Description. Body length 2.6–3.5 mm. Body glossy. Color usually black, tip of tibia and tarsus brown ( Fig. 2 ).

Head: As long as wide. Eyes large, convex, occupying almost entire lateral side of head. Mandible bidentate, slightly pointed, one subapical tooth present. Median sclerotized plate of hologlossa ( Fig. 6 ) trapezoidal, about 1.3 times longer than wide. In male antenna slightly longer than female. Male antenna (Fig. 10): scape robust, about 2.2 times longer than wide; pedicel about 1.9 times longer than wide, shorter and narrower than scape; antennomere 3 slender, slightly dilated apically, about 2.0 times longer than wide, slightly longer and narrower than pedicel; 4–7 about 1.6 times longer than wide; 8 about 1.2 times longer than wide, shorter than 7; 9 about 1.2 times longer than wide, longer than 8; 10 about 1.1 times longer than wide. Female antenna (Fig. 11): antennomeres 4–5 about 1.4 times longer than wide; 6–7 about 1.2 times longer than wide, 8 about 1.1 times longer than wide, 9–10 as long as wide.

Thorax: Pronotum ( Fig. 18 ) wider than long, widest at middle, narrowest at base. Intervals between punctures narrower than puncture diameter. Scutellar impression ( Fig. 22 ) 1.2 times wider than long, shaped as moderately emarginated inverted triangle, with many long pubescence. Elytra wider than pronotum, each elytron with shallow diagonal groove in apical third.

Abdomen: Male sternite VIII ( Fig. 26 ) wider than long and more or less prolonged apically. Posterior margin of female sternite VIII ( Fig. 30 ) broadly round.

Aedeagus ( Figs. 34, 38 ) oval, parameres broad, around the middle of median lobe.

Spermatheca ( Fig. 42 ) in the middle curved about 130 degrees.

Materials examined (total 253 specimens). RUSSIA: 5 ex., river Birapchana , Krasnoyarsk region , 29 VI 1993, leg. Semenov V. B., Thinodromus bernhaueri ( Klima, 1904) , det. Gildenkov, 2000 ; KOREA: Gangwon Prov.: 2 ex., Mt. Balgyosan, Chungil-myeon , 9–10 IX 1998, K.-L. You, H.-J. Lim and K.-J. Ahn, ex light ; 3 ex., Namdaechun, Namdae-dong , 21 IV 2002, S.-J. Park, M.-J. Jeon and J.-S. Park, ex under stonesnear river ; 5 ex., Dappung-gyo, Naechon, Hongcheon-gun , 24 V 2002, C.-W. Shin & J.-S. Park, ex sifting; Chungbuk Prov. : 3 ex., Mt. Sobaeksan, Namcheon-ri, Danyang-gun , 21 VII 2005, S I Lee, ex under stone near stream; Chungnam Prov. : 35 ex., Kum river, Woosung-myon, Kongju City , 19 IX 1999, K.-J. Ahn & H.-J. Kim, ex near stream ; 24 ex., same data as former except for Kumnam-myon ; 4 ex., Kumnam-myon, Gongju-gun , 7 VI 1999, H.-J. Kim, ex near stream ; 1 ex., Kum river, Kongju-gun , 6 VII 1999, H.-J. Kim ; 14 ex., Sungdang-ri, Chubu-myeon, Kumsan-gun , 27 IV 2006, T.- K. Kim & Y.-H. Kim, ex near stream ; 3 ex., same data as former except for Y.-H. Kim ; 4 ex., same data as former except for K.-J. Ahn ; 12 ex., Sutongol , Daejeon City , 18 IV 1998, K.-J. Ahn, H.-J. Kim, H.-J. Lim and K.-L. Yu, ex near stream (1 male, on slide) ; 21 ex., same data as former except for 26 VI 1999, H.-J. Kim (2 males and 2 females, on slide) ; 3 ex., same data as former except for 9 V 1998, K.-L. Yu & H.-J. Kim ; 1 ex., same data as former except for Gyesan-dong, Yuseong-gu , 6 IV 2003, S.-M. Choi & J.-S. Park ; 1 ex., Sinwonsa, Mt. Gyeryongsan, Gongju , 17 VII 2002, Churu Shin, ex near stream ; 2 ex., Kongam-ri, Banpo-myeon, Kongju City , 6 IX 2003, S.-M. Yu, E.-S. Go, Y.- S. Park, S.-M. Yun and J.-S. Park ; 26 ex., Kumsu-bong, Mt. Gyeryongsan, Gyesan-dong , Yuseong-gu , Daejeon City , 21 V 2000, S.-J. Park, ex near stream ; 2 ex., same data as former except for 23 VI 2000, H.-J. Kim; Jeonbuk Prov. : 1 ex., Mankyoung river, Ha-ri, Wanju-gun , 6 IX 2005, D H Lee, ex under stone near stream ; 11 ex., Mt. Deokyusan, Muju-gun , N35°50'35", E127°41'32", 353 m, 27 V 2005, J.-S. Park, S.-I. Lee, T.- K. Kim and D.-M. Lee, ex under stone; Jeonnam Prov. : 34 ex., Oidong-ri, Changpyeong-myeon, Damyang-gun , N35°10'48.1", E127°2'45.6", 21 IV 2006, K.-J. Ahn, T.-K. Kim, H.-W. Kim and Y.-H. Kim, ex under stones near stream (2 males and 2 females, on slide) ; 1 ex., Mt. Duryunsan, Gurim-ri, Samsan-myeon , Haenam-gun , 46 m, 20 V 2005, S.-I. Lee & J.-S. Park; Gyeongbuk Prov. : 2 ex., Gikjisa, Kimcheon , 13 V 1989, K.-J. Ahn, ex near stream ; 27 ex., Jeokdeok-ri , Bonghwa-gun, N 36°86'73.5", E128°68'46.5", 3 V 2003, S.-J. Park & J.-S. Park, ex near stream ; 5 ex., same data as former except for Kaji-gol, Gangdong-ri, Y.B. Cho , S.-J. Park and J.- S. Park; Jeju Prov. : 1 ex., Seogwipo City , 14 VII 1985, K.S. Lee .

Distribution. Korea, Russia, and Mongolia.

Remarks. This species is very similar in appearance to T. sericatus , but can be distinguished by the trapezoidal median sclerotized plate of hologlossa (circular in T. sericatus ), a longer pubescence on the abdomen, and shorter antennomeres as well as a distinct structure of the aedeagus and spermatheca. Thinodromus bernhaueri is also different from T. deceptor and T. japonicus in having black coloration and all antennomeres longer than wide.

Figures

FIGURES 1–4. Habitus of Thinodromus. 1: T. deceptor, 3.2 mm; 2: T. bernhaueri, 3.3 mm; 3: T. sericatus, 3.5 mm; 4. T. japonicus, 3.8 mm.

FIGURES 5–8. Median sclerotized plate of hologlossa of Thinodromus, ventral aspect. 5: T. deceptor; 6: T. bernhaueri; 7: T. sericatus; 8: T. japonicus. Scale bars: 0.1 mm.

FIGURES 17–20. Pronotum of Thinodromus, dorsal aspect, circle indicates punctures. 17: T. deceptor; 18: T. bernhaueri; 19: T. sericatus; 20: T. japonicus. Scale bars: 0.1 mm.

FIGURES 21–24. Scutellum of Thinodromus, dorsal aspect. 21: T. deceptor; 22: T. bernhaueri; 23: T. sericatus; 24: T. japonicus. Scale bars: 0.1 mm.

FIGURES 25–32. Abdominal sternite VIII of Thinodromus, (25–28) and female (29–32), ventral aspect. 25, 29: T. deceptor; 26, 30: T. bernhaueri; 27, 31: T. sericatus; 28, 32: T. japonicus. Scale bars: 0.1 mm.

FIGURES 33–40. Aedeagus of Thinodromus, dorsal (33–36) and lateral (37–40) aspect. 33, 37: T. deceptor; 34, 38: T. bernhaueri; 35, 39: T. sericatus; 36, 40: T. japonicus. Scale bars: 0.1 mm.

FIGURES 41–44. Spermatheca of Thinodromus. 41: T. deceptor; 42: T. bernhaueri; 43: T. sericatus; 44: T. japonicus. Scale bars: 0.1 mm.