Monday, October 7, 2024

[Entomology • 2024] Bolbelasmus (Kolbeus) guangdongensis • A New Species of Bolbelasmus (Coleoptera: Bolboceratidae) from Guangdong Province, China


Bolbelasmus (Kolbeusguangdongensis 
 Liao & Wu, 2024 
 

Abstract
Background: Bolbelasmus is a group of small to medium-sized beetles distributed in the Holarctic and Oriental Regions and in Central America. It includes two subgenera (Bolbelasmus and Kolbeus) and 32 species known in the world fauna with seven species recorded from China.

New information: The new species, Bolbelasmus guangdongensis sp. nov., is described from south China and compared with B. coreanus, B. meridionalis and B. chifengi.

Keywords: Bolbelasmus, new species, Guangdong, China

 Bolbelasmus guangdongensis sp. nov.
A holotype male, dorsal view; B paratype female, dorsal view; C holotype, left fronto-lateral view; D holotype, left lateral view.
Scale bars: 2 mm. 

Head of Bolbelasmus guangdongensis sp. nov., holotype male, dorsal view.
Scale bars: 1 mm.

Bolbelasmus (Kolbeus) guangdongensis Liao & Wu, sp. nov.

Diagnosis: Bolbelasmus guangdongensis sp. nov. belongs to the subgenus Kolbeus by pronotal base imarginate (marginate in Bolbelasmus) and scutellum elongate (usually short in Bolbelasmus) (Krikken 1977). This new species resembles Bolbelasmus coreanus, (Kolbe, 1886) (from Korea and China (Krikken 1977, Li et al. 2008)); Bolbelasmus meridionalis Krikkeni Nikolajev, 1979 (from Indonesia, Thailand, China and Vietnam (Krikken 1977) and Bolbelasmus chifengi Wang & Li, 2024 (from China (Li and Wang 2024)) in the body longer, 9 mm (Krikken 1977, Li et al. 2008, Li and Wang 2024) and the frontal tubercle located in junction of clypeofrontal suture (Li and Wang 2024). Their diagnostic characters are summarised in Table 1.
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 Weiqi Liao and Zhengwei Wu. 2024. A New Species of Bolbelasmus (Coleoptera, Bolboceratidae) from Guangdong Province, China. Biodiversity Data Journal. 12: e131664. DOI: doi.org/10.3897/BDJ.12.e131664