Biology:Cheirotonus
Cheirotonus is a genus of long-armed scarabs (subfamily Euchirinae) with about 10 species with a distribution extending west along the Himalayas to Japan in the east. They live inside tree holes in montane forest and are attracted to lights. Males and females show differences in size and structure of the legs with males having elongated foretibiae. The pronotum is shiny green and the elytra are usually dark with orange patterning.
Eight to ten species, depending on the taxonomic treatment, are recognized:[1]
- C. battareli Pouillaude 1913 - northern Vietnam
- C. formosanus Ohaus 1913 - Taiwan
- C. gestroi Pouillaude 1913 - Northeast India, Burma, Thailand, Vietnam
- =corompti Pouillaude 1913
- =henrici Pouillaude 1913
- =chiangdaoensis Minet 1987
- C. jambar Kurosawa 1984 - North Okinawa
- C. jansoni (Jordan 1898) - Burma, China, Vietnam
- = nankinensis Yu, 1936
- = szetshuanus Medvedev, 1960
- C. macleayi Hope, 1841 - Bhutan, India, China
- C. parryii Gray, 1848 - Burma, India, Laos, Thailand
- C. peracanus Kriesche 1919 - Peninsular Malaysia
- =arnaudi Minet 1981
- C. terunumai Muramoto 2008 - Tibet
Genomics
A chromosome-level genome assembly of Cheirotonus formosanus was published in 2026, representing a high-quality reference genome for the genus. The genome size is approximately 600.9 Mb, assembled into 10 chromosomes, with a BUSCO completeness of 99.3%, and 12,736 protein-coding genes were predicted, including identification of a putative Y-linked scaffold.[2]
References
- ↑ Young, Ronald M. (1989). "Euchirinae (Coleoptera: Scarabaeidae) of the World: Distribution and Taxonomy". The Coleopterists Bulletin 43 (3): 205–236.
- ↑ Chien, Sean; Huang, Jen-Pan; Blackmon, Heath (2026). "Chromosome-Level Reference Genome of an Endemic, Endangered Long-Armed Scarab (Cheirotonus formosanus): Discovery of a Putative Y-Linked Scaffold and Demographic History". Ecology and Evolution 16 (4). doi:10.1002/ece3.73483. PMID 41987950.
Wikidata ☰ Q4036078 entry
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