Leiodes lucens ( Fairmaire, 1855 )

Hoshina, Hideto, 2012, Review of the tribes Sogdini and Leiodini from Japan and North Chishima Islands. Part II. Genera Hydnobius and Leiodes (Coleoptera: Leiodidae), Acta Entomologica Musei Nationalis Pragae (suppl. 1) 52, pp. 1-168 : 116-119

26. Leiodes lucens ( Fairmaire, 1855)

Japanese name: Aka-ô-tamakinokomushi ( Figs. 6 , 77–79 )

Anisotoma lucens Fairmaire, 1855: 76 .

Liodes lucens: REITTER (1885) : 104.

Leiodes lucens: HATCH (1929) : 22; DAFFNER (1983): 71 (redescription); ANGELINI & ŠVEC (1994): 22 (key to Chinese species of Leiodes ); COOTER (1996): 247 (key to British species of Leiodes ); ŠVEC (1998): 36 (new to Nepal); ŠVEC (2000): 98 (key to Chinese species of Leiodes ); PERREAU (2004): 196 (catalogue); ŠVEC (2008): 254 (keys to Nepalese and Chinese species of Leiodes ); ŠVEC & COOTER (2010): 103 (New to China: Hubei).

Leiodes alpicola Nakane, 1963: 41 ; DAFFNER (1983) (redescription): 108; PERREAU (2004): 194 (catalogue). Syn. nov.

Leiodes cooteri Park & Ahn, 2007: 30 . Syn. nov.

See HATCH (1929) and DAFFNER (1983) for other synonymy and references.

Type locality. France, Bondy.

Type material examined. Anisotoma lucens and Leiodes cooteri : not examined.

Leiodes alpicola : JAPAN: HONSHU: HOLOTYPE: 1 ♀, Nagano Pref., Kamikôchi, 13.viii.1950, T. Nakane leg. ( HUMS).

Additional specimens examined. JAPAN: SHIKOKU: 1 ♂, Tokushima Pref., Yamakawa Town, Mt. Kôtsu , 2–10.viii.2003, K. Tanaka leg. ( FIT) ( FUFJ) ; 1 ♀, Tokushima Pref., Yamakawa Town, Okunoi , 2.–10.viii.2003, K. Tanaka leg. ( FIT) ( FUFJ) ; 1 ♂, Tokushima Pref., Mima City, Koyadaira, Mt. Ichinomori , Fujinoikre-dani (alt. 1300 m), 17.vi.–1.viii.2007, K. Tanaka leg. ( FIT) ( FUFJ) ; 1♂, Tokushima Pref., Mima City, Anabuki-chô, Furumiya , Mt. Tsunatsuke-yama (alt. 1050 m), 5–12.viii.2007, K. Tanaka leg. ( FIT) ( FUFJ). HONSHU: 1 ♂, Okayama Pref., Chûka Village , Mt. Yamanorisen , 26.ix.2004, Y. Fujitani leg. ( FIT) ( FUFJ) ; 2 ♂♂, Fukui Pref., Ôno City, Heikedaira , 1.viii.1997, S. Inoue leg. ( MT) ( FUFJ) ; 1 ♂, 1 ♀, Gifu Pref., Shirakawa Village , Ô–shirakawa, 24.vii.2004, K. Toyoshima leg. ( FIT) ( FUFJ) ; 1 ♀, Nagano Pref., Tokugô Pass , 29.vii.1984, S. Tsuyuki leg. ( NSMT) ; 1 ♂, Nagano Pref., Kijimadaira Village, Kayanodaira , 10.vi.1998, Y. Sawada leg. ( PT) ( FUFJ) ; 1 ♂, Yamanashi Pref., Nirasaki City, Hôô-goya , 29.vii.1991, K. Hosoda leg. ( KM) ; 1♀, Yamanashi Pref., Nirasaki City, Hôô-goya , 28.viii.1993, M. Saitô leg. ; 1 ♂, 1 ♀, Tokyo Pref., Hinohara Village, Mt. Mitôsan (alt. 1100m), 23.–30.vii.2008, H.Takano leg. ( FIT) ( FUFJ) ; 1♂, 1♀, Saitama Pref., Naguri Village, Mt.Arimayama (alt. 1200 m), 17.–24.ix.2004, K.Arai & S.Arai leg. ( FIT) ( FUFJ) ; 3♂♂, 1♀, Miyagi Pref., Sendai City, Mt. Izumigadake, Kuwanuma-rindô , 17.–29.ix.2009, M. Oikawa leg. ( FIT) ( FUFJ). HOKKAIDO: 1 ♂, 1 ♀, Ebetsu City , Nopporo Forest Park , 11.x.2000, S. Hori leg. ( FIT) ( FUFJ) ; 1 ♀, Maruseppu Town , 15.x.2000, T. Katô leg. ( FUFJ) . KOREA: 1 ♂, Kangwon Prov., Jeongsun-gun, Gohan-up , Hambaeksan , 13.vii.1999, U.–S. Hwang and H.–J. Kim leg. ( FIT) ( CNUIC) ; 1♂, 1♀, Kangwon Prov., Pochon-gun, Sanjong-ri , Mt. Myongsongsan , 4–6.ix.1999, H-J. Kim & U-S. Hwang leg. ( FIT) ( CNUIC) . CHINA: SICHUAN: 1 ♀, W. Sichuan, Sabde , 12.vii.1998, A. Smetana leg. ( FUFJ) . GERMANY: 1 ♂, Thuringen, Gehlberg, Schmucker Graben , 26.viii.1997, J. Welpert leg. ( FUFJ). EUROPE: 2 ♂♂, 2 ♀♀, without additional locality data ( FUFJ) .

Diagnosis. Coloration. Dorsum usually unicolor, brown, reddish brown or dark reddish brown; antennomeres 1–6 and 8 brown; antennomeres 7, 9, 10, and basal 3/5 of antennomere 11 dark brown; apical 2/5 of antennomere 11 light brown.

Body 3.2–5.0 mm long, ca. 1.8× as long as wide ( Fig. 77A ); head densely and minutely punctate, bearing some large punctures ( Fig. 77A ); antennomeres 1–4 each longer than wide; antennomeres 5 and 11 each about as long as wide; remaining antennomeres each wider than long; antennomere 11 oval ( Fig. 77C ). Pronotum very feebly sinuate at posterior margin and densely and minutely punctate ( Fig. 77A ). Elytra not transversely strigose; each elytron with nine rows of punctures, bearing small number of large punctures and dense very fine punctures between rows ( Fig. 77D ); row 9 invisible in dorsal view, subhumeral row as long as ca. 1/3 or 1/4 of elytral length ( Fig. 77B ); rows composed of relatively weak punctures ( Fig. 77A ); sutural stria fine, reaching from apex to ca. apical half of the elytral length. Metathoracic wings fully developed. Mesoventrite with one distinct excavation between median carina and transverse carina ( Fig. 77E ); median carina of mesoventrite low ( Fig. 77E ); metaventrite indistinctly sexually dimorphic. Legs showing sexual dimorphism on protarsi, protibiae, mesotarsi, metafemora, and metatibiae; metafemur with a small dorsal projection posteroapically ( Figs. 78G, 78H ).

Male. Metaventrite usually bearing relatively thick and dense pubescence at middle portion ( Fig. 77F ); tarsomeres 2–4 of protarsi and mesotarsi expanded ( Fig. 78A ); protibiae gradually and relatively distinctly widening from base towards apex at internal margins ( Fig. 78E ); metafemora characteristic and very sharply protuberant at about basal 1/4 of posterior margins ( Fig. 78C ); metatibiae relatively slender, weakly curved inwards ( Fig. 78C ); abdominal sternite 8 strongly curved ( Fig. 79C ); aedeagus as shown in Figs. 79A, 79B .

Female. Metaventrite usually bearing relatively thin and sparse pubescence at middle portion ( Fig. 77G ); protarsi and mesotarsi slender ( Figs. 78B ); protibiae gradually and feebly widening from base towards apex at internal margins ( Fig. 78F ); metafemora very feebly curved at posterior margins ( Fig. 78D ); metatibiae relatively robust and almost straight ( Fig. 78D ); abdominal sternite 8 with spiculum ventrale at central point of anterior margin ( Fig. 79D ); coxites and stylus as shown in Fig. 79E .

Differential diagnosis. Leiodes lucens is similar to L. irregularis in the long-oval body shape, but can be distinguished from the latter by having an almost unicolor dorsum and the mesoventrite with a distinct excavation ( Fig. 77E ). In contrast, L. irregularis usually has a bicolored dorsum ( Figs. 93 D–G) and the mesoventrite without distinct excavation ( Fig. 93J ).

Taxonomic note. I compared the European specimens of L. lucens with the Korean species L. cooteri Park & Ahn, 2007 and the Japanese species L. alpicola Nakane, 1963 and found that the latter species cannot be distinguished from the former by any morphological character. Males of L. cooteri and L. alpicola are unique in two characters, the male metafemur with a posterior projection ( Fig. 78C ) and the large trident sclerite of the inner sac of the aedeagus ( Fig. 79A ) in both these characters, they completely agree with the specimens of L. lucens . Therefore, it is concluded that L. cooteri and L. alpicola are junior synonyms of L. lucens .

Distribution. Europe, Russia, Nepal, China, Korea ( DAFFNER 1983, ANGELINI & ŠVEC 1994, PARK & AHN 2007), and Japan (Honshu, Shikoku, Hokkaido).

Figures

Fig. 6. Heads (A–I) and mandibles (J and K) of Leiodes spp. A – Leiodes yasudai sp. nov.; B – L. multipunctata (Rye, 1873); C – L. irregularis Hatch, 1929; D – L. osawai Nakane, 1963; E – L. yukihikoi sp. nov.; F – L. okawai Nakane, 1963; G – L. tanakai sp. nov.; H, J, K – L. lucens (Fairmaire, 1855); I – L. yoshidai sp. nov. Scale I: 0.5 mm for A–I; II: 0.2 mm for J and K.

Fig. 77. Leiodes lucens (Fairmaire, 1855). A – body, dorsal view; B – ditto, lateral view; C – antenna; D – elytral punctures; E – mesoventrite, lateral view; F – male metaventrite; G – female metaventrite. Scale I: 1 mm for A and B; II: 0.5 mm for C; III: 0.2 mm for E; IV: 1 mm for F and G.

Fig.78.Leiodes lucens (Fairmaire, 1855).A – male fore leg, ventral view; B – female fore leg, ventral view; C – male hind leg, ventral view; D – female hind leg, ventral view; E – male protibia, dorsal view; F – female protibia, dorsal view; G – male metafemur, dorsal view; H – female metafemur, dorsal view. Scale I: 1 mm for A and B; II: 1 mm for C and D; III: 0.2 mm for E and F; IV: 0.2 mm for G and H.

Fig. 79. Leiodes lucens (Fairmaire, 1855). A – aedeagus, dorsal view; B – ditto, lateral view; C – male abdominal sternite 8; D – female abdominal sternite 8; E – coxite and stylus. Scale I: 1 mm for A and B; II: 0.2 mm for C and D; III: 0.1 mm for E.

Fig. 93. Leiodes irregularis Portevin, 1927.A – body, dorsal view; B – ditto, lateral view; C, D, E, F, and G – dorsal color; H – antenna; I – elytral punctures; J – mesoventrite, lateral view. Scale I: 1 mm for A and B; II: 0.5 mm for H; III: 0.2 mm for J.