Bolbelasmus korshunovi Zinchenko, 2016

Li, Chun-Lin & Wang, Chuan-Chan, 2024, A systematic review of the genus Bolbelasmus Boucomont (Coleoptera, Geotrupidae, Bolboceratinae) from Indochina and surrounding areas, ZooKeys 1191, pp. 287-305 : 287

Bolbelasmus korshunovi Zinchenko, 2016

Figs 7 , 8 , 14 , 20 , 26 , 35 , 36 , 42

Bolbelasmus korshunovi Zinchenko, 2016: 328. Original combination (type locality: Nong Bun Nak, Nakhon Prov., Thailand).

Material examined.

(5♂♂). 2♂♂ (ZMUC). Thailand: Loei Province, Phu Luang Wildlife Sanctuary , 8.-14.x.1984, 700-900 m, Karsholt, Lomboldt & Nielsen leg., Pral Siaw, 1923-9-33, Paūl Fogh / Coll. Roseberg. 3♂♂ (NSMT). Sansai , Chiang Mai, Thailand, 17. VI. 1993 .

Diagnosis.

Body length, males, 6.8-9.0 mm, greatest width at pronotal base 4.4-5.7 mm; females, 7.1-8.7 mm in length, 4.3-5.6 mm in width ( Zinchenko 2016). Bolbelasmus korshunovi is distinguished from the other Oriental Bolbelasmus species by elytral sutural intervals that are moderately convex, primary punctures sparsely distributed either side of the center of the pronotum, and shapes of the parameres.

Notes.

Thirteen type specimens were designated in the original description of the species ( Zinchenko 2016), 12 of them collected from June to August, and the holotype during November. Accordingly, the temporal activity of adults is likely at least half the year during both rainy and dry seasons. This is identical to the sympatric species, B. meridionalis .

Distribution.

Northern Thailand.

Remarks.

Bolbelasmus korshunovi inhabits plains to low-elevational montane areas and occurs sympatrically with B. meridionalis in northern Thailand.

Figures

Figures 7 - 10. Dorsal and lateral views of male Bolbelasmus spp. 7, 8 B. korshunovi 9, 10 B. yutangi sp. nov., holotype.

Figures 11 - 16. Scanning electron micrographs of heads of male Bolbelasmus spp. 11 B. concavisuturalis sp. nov. 12 B. chifengi sp. nov. 13 B. meridionalis 14 B. korshunovi 15 B. yutangi sp. nov. 16 B. coreanus. Scale bar: 1 mm.

Figures 17 - 22. Scanning electron micrographs of pronota of male Bolbelasmus spp. 17 B. concavisuturalis sp. nov. 18 B. chifengi sp. nov. 19 B. meridionalis 20 B. korshunovi 21 B. yutangi sp. nov. 22 B. coreanus. Scale bar: 1 mm.

Figures 23 - 28. Scanning electron micrographs of elytra of male Bolbelasmus spp. 23 B. concavisuturalis sp. nov. 24 B. chifengi sp. nov. 25 B. meridionalis 26 B. korshunovi 27 B. yutangi sp. nov. 28 B. coreanus. Scale bar: 1 mm.

Figures 29 - 38. Male genitalia of Bolbelasmus spp. (29, 31, 33, 35, 37, dorsal views; 30, 32, 34, 36, 38, ventral views) 29, 30 B. concavisuturalis sp. nov. 31, 32 B. chifengi sp. nov. 33, 34 B. meridionalis 35, 36 B. korshunovi 37, 38 B. yutangi sp. nov. Scale bar: 0.3 mm.

Figures 39 - 43. Male genitalia of Bolbelasmus spp., lateral views 39 B. concavisuturalis sp. nov. 40 B. chifengi sp. nov. 41 B. meridionalis 42 B. korshunovi 43 B. yutangi sp. nov. Scale bar: 0.2 mm.