Rhaetulus is a genus of Asian stag beetles in the subfamily Lucaninae and now placed in the monogeneric tribe Rhaethulini ; it was originally erected by John Westwood in 1871.Westwood JO (1871) Descriptions of some new species of exotic Lucanidae. Transactions of the Royal Entomological Society of London: 353-374. Available here Species have been recorded from China, Indochina, Taiwan and certain other Pacific islands.
Species The Global Biodiversity Information Facility lists:Global Biodiversity Information Facility: Rhaetulus Westwood, 1871 (retrieved 26 January 2026) Rhaetulus crenatus Rhaetulus didieri Rhaetulus maii Rhaetulus speciosus Rhaetulus recticornis
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