Leiodes ozakii, Hoshina, 2012

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 : 134-137

publication ID

https://doi.org/ 10.5281/zenodo.4272467

DOI

https://doi.org/10.5281/zenodo.4339408

persistent identifier

https://treatment.plazi.org/id/03E98224-3289-07E5-76FA-4088FD10A6CF

treatment provided by

Felipe

scientific name

Leiodes ozakii
status

sp. nov.

31. Leiodes ozakii View in CoL sp. nov.

Japanese name: Tsugaru-ô-tamakinokomushi ( Figs. 91–92 View Fig View Fig )

Type locality. Japan, Honshu, Aomori Pref., Hirakawa City, Ozakishiroiwa.

Type material. JAPAN: HONSHU: HOLOTYPE: ♂, Aomori Pref., Hirakawa City, Ozakishiroiwa , 31.v.1997, T. Ozaki leg. ( MNHAH).

Diagnosis. Body 3.4 mm long, ca. 1.9× as long as wide. Dorsum brown. Each elytron with nine distinct rows of punctures,subhumeral row as long as ca. 1/3 of elytral length. Mesoventrite without distinct excavation between median carina and transverse carina. Median carina of mesoventrite low. Metafemora robust. Metatibiae distinctly curved inwards near apex.

Description. Measurements of holotype: Body length 3.4 mm; head 0.53 mm in length and 0.88 mm in width; pronotum 0.91 mm in length and 1.5 mm in width; elytra 2.2 mm in length and 1.8 mm in width.

Coloration. Dorsum almost unicolor, brown; 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; legs brown; mesoventrite, metaventrite, and abdominal ventrites brown.

Head distinctly and densely punctate, bearing some large punctures ( Fig. 91A View Fig ); antennomeres 1–3 each longer than wide; antennomere 4 about as long as wide; remaining antennomeres each wider than long; antennomere 11 robust ( Fig. 91C View Fig ); relative lengths of antennomeres 2 to 11 – 2.6: 3.8: 1.4: 1.0: 1.0: 2.3: 1.0: 2.6: 2.6: 4.3.

Pronotum widest near base, simply and very feebly curved at posterior margin, distinctly punctate, punctation similar to that on head ( Fig. 91A View Fig ).

Scutellum minutely punctate.

Elytra widest ca. at basal 1/3 ( Fig. 91A View Fig ), not transversely strigose; each elytron with nine rows of punctures, bearing small number of large punctures and densely arranged very fine punctures between rows ( Fig. 91D View Fig ); row 9 invisible in dorsal view, subhumeral row as long as ca. 1/3 of elytral length ( Fig. 91B View Fig ); rows composed of punctures larger than those of pronotum ( Fig. 91A View Fig ); sutural stria fine, reaching from apex to ca. apical 2/5 of elytral length.

Metathoracic wings fully developed.

Mesoventrite strongly microreticulate, impunctate, almost glabrous, without distinct excavation between median carina and transverse carina ( Fig. 91E View Fig ); median carina of mesoventrite low ( Fig. 91E View Fig ); metaventrite sparsely and finely pubescent, strongly microreticulate except for almost smooth middle portion.

Protibiae distinctly widening from base towards apex ( Fig. 92C View Fig ); tarsomeres 2–4 of protarsi and mesotarsi expanded ( Fig. 92A View Fig ); metafemur robust ( Fig. 92B View Fig ), with a small dorsal projection posteroapically ( Fig. 92D View Fig ); metatibiae feebly curved inwards near apex ( Fig. 92B View Fig ).

Abdominal sternite 8 weakly curved ( Fig. 92E View Fig ); aedeagus slender ( Figs. 92F, 92G View Fig ); median lobe simply and bluntly pointed at apex in dorsal view ( Fig. 92F View Fig ), sharply curved near base in lateral view ( Fig. 92G View Fig ); each paramere bearing two setae and one transparent small lobe at apex ( Fig. 92F View Fig ).

Female. Unknown.

Differential diagnosis. Leiodes ozakii sp. nov. is similar to L. irregularis in elytral appearance, but can be distinguished from it by having the male protibiae strongly widening basally towards the apex ( Fig. 92C View Fig ), the tarsomeres 2–4 of male protarsi and mesotarsi expanded ( Fig. 92A View Fig ), and the median lobe of the aedeagus sharply curved near the base in the lateral view ( Fig. 92G View Fig ). In contrast, L. irregularis has the male protibiae feebly widening basaly towards the apex ( Fig. 94F View Fig ), tarsomeres 2–4 of male protarsi and mesotarsi a slightly expanded ( Fig. 94A View Fig ), and the median lobe weakly curved ( Fig. 95B View Fig ). Leiodes ozakii sp. nov. is also similar to L. silesiaca (Kraatz, 1852) inhabiting the Russian Far East in elytral shape but can be separated from it by having a relatively slender aedeagus in the dorsal view ( Fig. 92F View Fig ). In contrast, L. silesiaca has the aedeagus relatively robust.

Etymology. This species is dedicated to Dr. Toshihiro Ozaki who is the collector of the holotype.

Distribution. Japan: Honshu (Aomori Prefecture).

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Leiodidae

Genus

Leiodes

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