Leiodes kandai, 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 : 27-30

publication ID

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

DOI

https://doi.org/10.5281/zenodo.10845677

persistent identifier

https://treatment.plazi.org/id/03E98224-321E-0748-76DA-42E9FDC8A78F

treatment provided by

Felipe

scientific name

Leiodes kandai
status

sp. nov.

2. Leiodes kandai View in CoL sp. nov. Japanese name: Kanda-ô-tamakinokomushi ( Figs. 10–12 View Fig View Fig View Fig , 110 View Fig )

Type locality. Japan, Honshu, Gifu Pref., Shirakawa Village, Ô–shirakawa.

Type material. JAPAN: HONSHU: HOLOTYPE, ♂, Gifu Pref., Shirakawa Village ,Ô–shirakawa, 4.ix.2004, K.Toyoshima leg. ( MNHAH). PARATYPES: same data as holotype except for dates: 1 ♀, 3.vii.2004 ( FUFJ), 1 ♂, 1 ♀, 19.vii.2004 ( FUFJ), 1 ♀, 24.vii.2004 ( FUFJ), 1 ♂, 31.vii.2004 ( FUFJ), 2 ♂♂, 3 ♀♀, 22.viii.2004 ( FUFJ). All type specimens were collected by FIT.

Diagnosis. Body 2.4–2.6 mm in length, ca. 1.6× as long as wide. Dorsum brown. Each elytron with distinct nine rows of punctures, subhumeral row as long as ca. 1/3 of elytral length. The rows composed of minute punctures. Mesoventrite with one shallow excavation between median carina and transverse carina. Median carina of mesoventrite low. Mesotibiae without distinct sexual dimorphism. Metafemora robust. Male metatibiae weakly curved. Female abdominal sternite 8 with a spiculum ventrale.

Description. Measurements of holotype: Body length 2.6 mm; head 0.42 mm in length and 0.75 mm in width; pronotum 0.80 mm in length and 1.4 mm in width; elytra 1.8 mm in length and 1.6 mm in width.

Coloration. Dorsum shining and almost unicolor, brown; antennomeres 1–6 and 8 brown; antennomeres 7, 9, 10, and basal 3/5 of 11 blackish dark brown; apical 2/5 of antennomere 11 light brown; legs brownish and slightly paler than dorsum; mesoventrite, metaventrite, and abdominal ventrites brown.

Body 2.4–2.6 mm in length, ca. 1.6× as long as wide.

Head ca. 1.8× as wide as long, ca. 0.52× as long as and 0.54× as wide as pronotum, densely and very minutely punctate ( Fig. 10A View Fig ), usually bearing some large punctures ( Fig. 10A View Fig ); 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. 10C View Fig ); relative lengths of antennomeres 2 to 11: 2.8: 3.3: 1.2: 1.6: 1.2: 2.4: 1.0: 2.5: 2.5: 4.2.

Pronotum ca. 1.8× as wide as long, ca. 0.46× as long as and 0.86× as wide as pronotum, widest near base, simply and very feebly curved at posterior margin, distinctly and very minutely punctate, punctation same as that on head ( Fig. 10A View Fig ).

Scutellum very minutely punctate.

Elytra almost as long as wide or a little longer than wide in dorsal view, widest ca. at basal 1/3 ( Fig. 10A View Fig ), not transversely strigose; each elytron bearing nine rows of punctures with small number of punctures, with moderate number of very fine punctures between rows ( Fig. 10D View Fig ); row 9 invisible in dorsal view, subhumeral row ca. as long as 1/3 of elytral length ( Fig. 10B View Fig ); elyteral rows composed of minute but larger punctures than those of pronotum ( Fig. 10A View Fig ); sutural stria fine, arising from apex to ca. apical 3/5 of the elytral legnth.

Metathoracic wings fully developed.

Mesoventrite strongly microreticulate, impunctate, almost glabrous, and with a shallow excavation between median carina and transverse carina ( Fig. 10E View Fig ); median carina of mesoventrite low ( Fig. 10E View Fig ); metaventrite without sexual dimorphism, sparsely pubescent, distinctly microreticulate except for almost smooth middle portion.

Legs showing sexual dimorphism on protarsi, mesotarsi, and metatibiae; protibiae gradually and very feebly widening from base towards apex ( Figs. 11E, 11F View Fig ); metafemur robust, and with a small dorsal projection posteroapically ( Figs.11G, 11H View Fig ).

Male. Tarsomeres 2–4 of protarsi and mesotarsi a little expanded ( Fig. 11A View Fig ); metatibiae weakly curved inwards ( Fig. 11C View Fig ); abdominal sternite 8 feebly curved ( Fig. 12C View Fig ); aedeagus relatively robust ( Figs. 12A, 12B View Fig ); median lobe triangular at apex in dorsal view ( Fig. 12A View Fig ), pointed apically in lateral view ( Fig. 12B View Fig ); each paramere bearing two apical setae and one small transparent lobe at apex, feebly expanded in ca. apical 1/ 10 in lateral view ( Fig. 12B View Fig ); inner sac complex ( Fig. 12A View Fig ).

Female. Protarsi and mesotarsi slender ( Fig. 11B View Fig ); metatibiae almost straight ( Fig. 11D View Fig ); abdominal sternite 8 with a spiculum ventrale at a central point of anterior margin ( Fig. 12D View Fig ); coxites and stylus as shown in Fig. 12E View Fig .

Differential diagnosis. Leiodes kandai sp. nov. is similar to L. babai in having relatively minute elytral punctures, but may be distinguished from the latter by the relatively small body (2.4–2.6 mm), male metatibiae distinctly curved inwardly ( Fig. 11C View Fig ), and having the median lobe triangular at the apex in dorsal view ( Fig. 12A View Fig ). In contrast, L. babai has a relatively large body (2.6–3.0 mm), male metatibiae feebly curved ( Fig. 8C View Fig ), and the median lobe protuberant apically ( Fig. 9A View Fig ). Leiodes kandai sp. nov. is also similar to L. subtilis ( Reitter, 1885) inhabiting Central Asia and the Russian Far East by having elytral rows composed of minute punctures, but may be separated from it by having the median carina of the mesoventrite low ( Fig. 10E View Fig ) while L. subtilis has a high carina of the mesoventrite.

Etymology. The specific name is dedicated to an excellent scholar of Western learning, Takahira Kanda (1830–1898), who was born in the type locality, Gifu Prefecture.

Distribution. Japan: Honshu (Gifu Prefecture).

MNHAH

MNHAH

FUFJ

FUFJ

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Leiodidae

Genus

Leiodes

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