Leiodes multipunctata ( Rye, 1873 )

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 : 80-83

16. Leiodes multipunctata ( Rye, 1873)

Japanese name: Arame-ô-tamakinokomushi ( Figs. 6 , 50–52 , 114)

Anisotoma multipunctata Rye, 1873: 131 .

Liodes multipunctata: PORTEVIN (1914) : 226; PORTEVIN (1927): 74 (key to Japanese species of Leiodes ).

Leiodes multipunctata: HATCH (1929) : 35; DAFFNER (1983) (redescription): 47; PERREAU (2004): 197 (catalogue).

Type locality. Japan, Honshu, Hyôgo.

Type specimens. Type series of the present species have not been found as well as those of L. circinipes . See the part of “ Type series of L. circinipes ” (p. 35) for details.

Additional specimens examined. JAPAN: SHIKOKU: 2 ♂♂, Tokushima Pref., Kisawa Village, Okuyarito , 28– 31.v.2004, K. Tanaka leg. ( FIT) ; 1 ♂, Tokushima Pref., Mt. Tsurugi, Minokoshi (alt. 1340m), 28.v.–5.vi. 2006, K .

Tanaka leg.( FIT). HONSHU: 1♂, 2♀♀, Okayama Pref., Chuka Village, Mt.Yamanorisen , 26.vi.2004, Y.Fujitani leg. ( FIT) ; 1 ♂, Okayama Pref., Nagi Town, Mt. Nagisan , 15.–17.v.2005, S. Suzuki leg. ( FIT) ; same data as the former except for the dates: 1♀, 11.–18.vi.2005, 1♂, 24.ix.–1.x.2005, 1♂, 3♀♀, 15–29.x.2005, 1♂, 29.x.–3.xi.2005, 3♂♂, 2 ♀♀, 3.–12.xi.2005, 1♂, 1♀, 12.–23.xi.2005 ; 1 ♂, Kyoto Pref., Keihoku Town, Shûzan , 3.xi.1979, T. Ito leg. ; 1 ♂, Wakayama Pref., Susami Town, Kotonotaki , 26.x.1992, I. Matoba leg. ( TA) ; 3 ♂♂, Saitama Pref., Mt. Ryogamisan, Tachiya-bori (alt. 800 m), 31.x.1999, T. Kishimoto and T. Shimada leg. ( TA) ; 1 ♂, Yamagata Pref., Ôkura Village, Yunodai , 16.–23.ix.2006, M. Oikawa leg. ; 2 ♂♂, 2 ♀♀, same data as the former except for the date, 23–30.ix.2006 ; 1 ♂, 1 ♀, Yamagata Pref., Mogami-murayama , 29.x.2008, H. Makihara leg.( MT) ; 4♂♂, 6 ♀♀, Akita Pref., Chôkaichô, Sarukura , 16-24.ix.2005, M. Oikawa leg. ; 2♂♂, 1 ♀, Miyagi Pref., Sendai City, Mt. Izumigadake, Kuwanumarindô , 4–17.ix.2009, M. Oikawa leg. ( FIT) ; 1 ♀, Aomori Pref., Aomori City, Jyogakura , 22.vii.1995, T. Ozaki leg. (collected under the stones) ; 1 ♀, Aomori Pref., Aomori City, Sugaya , 8.viii.1995, T. Ozaki leg. ; 1 ♂, Aomori Pref., Towada City, Tsuta , 5.x.1996, T. Ozaki leg. ; 1 ♂, Aomori Pref., Ajigasawa Town, Kôsei Rindô , 5.vii.1998, T. Ozaki leg. ; 1 ♂, Gunma Pref., Tsumagoi Village, Mt. Asashiki, 24.vii.1979, K. Ito leg. ( EUMJ). All specimens except for the last specimen are preserved in FUFJ .

Diagnosis. Coloration. Dorsum almost unicolor ( Fig. 50C ) or clearly bicolored ( Figs. 50D, 50E ); head, pronotum and scutellum brown or dark brown; elytra brown or dark brown, sometimes black near elytral suture ( Figs. 50D, 50E ); antennomeres 1–6 and 8 brown; antennomeres 7, 9, 10, and basal half of antennomere 11 dark brown; apical half of antennomere 11 light brown.

Body 2.1–3.4 mm in length, ca. 1.9× as long as wide ( Fig. 50A ); head densely and minutely punctate, sometimes bearing some large punctures ( Fig. 50A ); antennomeres 1–4 each longer than wide; antennomere 5 about as long as wide; remaining antennomeres each wider than long; antennomere 11 robust ( Fig. 50F ). Pronotum simply and very feebly curved at posterior margin, its punctation similar to that on head ( Fig. 50A ). Elytra not transversely strigose; punctures of elytra dense and very irregular, not forming rows ( Figs. 50A, 50B ), consisting of various sizes of punctures ( Fig. 50G ); sutural stria fine, reaching from elytral apex to ca. apical half of elytral length. Metathoracic wings fully developed. Mesoventrite with one distinct excavation between median carina and transverse carina ( Fig. 50H ); median carina of mesoventrite low ( Fig. 50H ); metaventrite without sexual dimorphism. Legs sexually dimorphic on protarsi, mesotarsi, and metatibiae; protibiae gradually and very feebly widening from base towards apex ( Figs. 51G, 51H ); metafemur with a small dorsal projection posteroapically ( Figs. 51I, 51J ).

Male. Tarsomeres 2–4 of mesotarsi expanded ( Fig. 51A ); metafemora sometimes with some tiny crenellation on posterior margins ( Fig. 51E ); metatibiae almost straight or inwardly curved ( Figs. 51C, 51D, 51E ); abdominal sternite 8 strongly curved ( Fig. 52D ); aedeagus as shown in Figs. 52A, 52B .

Female. Protarsi and mesotarsi slender ( Fig. 51B ); metatibiae almost straight ( Fig. 51F ); abdominal sternite 8 with a spiculum ventrale at central point of anterior margin ( Fig. 52E ); coxites and stylus as shown in Fig. 52F .

Morphological variability. Dorsal color and male metatibiae of L. multipunctata have some morphological variation. These differences do not correlate to region, nor to body size.

Differential diagnosis. Leiodes multipunctata resembles L. indigesta Park & Ahn, 2007 in the densely arranged elytral punctures but can be distinguished from it by having the median lobe of the aedeagus relatively weakly curved in lateral view ( Fig. 52B ). In contrast, L. indigesta has the median lobe strongly curved.

Distribution. Japan: Honshu and Shikoku.

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. 50. Leiodes multipunctata (Rye, 1873). A – body, dorsal view; B – ditto, lateral view; C, D, and E – dorsal color; F – antenna; G – elytral punctures; H – mesoventrite, lateral view. Scale I: 1 mm for A and B; II: 0.5 mm for F; III: 0.2 mm for H.

Fig. 51. Leiodes multipunctata (Rye, 1873). A – male fore leg, ventral view; B – female fore leg, ventral view; C, D, and E – male hind legs, ventral view; F – female hind leg, ventral view; G – male protibia, dorsal view; H – female protibia, dorsal view; I – male metafemur, dorsal view; J – female metafemur, dorsal view. Scale I: 0.5 mm for A and B; II: 1 mm for C, D, and F; III: 0.5 mm for E; IV: 0.2 mm for G and H; V: 0.2 mm for I and J.

Fig. 52. Leiodes multipunctata (Rye, 1873).A – aedeagus, dorsal view; B – ditto, lateral view; C – parameres, lateral view; D – male abdominal sternite 8; E – female abdominal sternite 8; F – coxite and stylus. Scale I: 0.5 mm for A, B, and C; II: 0.2 mm for D and E, and 0.1 mm for F.