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Amami Round-winged Stag Beetle
AdvancedNeolucanus protogenetivus
A Japanese round-winged stag beetle from Amami-Oshima and nearby islands. Among the former tatezuno group its males have the least developed mandibles and the long-toothed form is very rare. Its adults appear earlier in the year than any other Japanese Neolucanus.
Difficulty
Advanced
Temperature
20〜28℃
Lifespan
Adults 3-6 months
Size
Males 43.3-65.2mm (captive record 69.9mm)
Humidity
60〜80%
Diet
Larvae eat humus (flake) derived from brown-rotted wood; adults take sap and beetle jelly
About
Neolucanus protogenetivus is a Japanese round-winged stag beetle found on Amami-Oshima, Tokunoshima and Kakeromajima, the nominate males running 43.3 to 65.2 mm. Among the former tatezuno subspecies group its males have the least developed mandibles and the long-toothed form appears only very rarely. Its adults emerge earlier in the year than those of any other Japanese Neolucanus. The genus is close to Odontolabis and has the stubby outline in plan that its Japanese name describes, and in long-toothed males the whole mandible sweeps upward to meet at teeth near the tip. The larvae feed on humus formed as broadleaf wood rots down to something close to soil, and in captivity a substrate made from brown-rotted wood is used. Collecting is banned by ordinance in every municipality of Amami-Oshima and Tokunoshima, and the species is listed as vulnerable on the fourth Ministry of the Environment Red List. The Ukejima subspecies hamaii is additionally designated a nationally rare species under the Species Conservation Act.
Source: Wikipedia (CC BY-SA 4.0)
Lifespan of the Amami Round-winged Stag Beetle
The Amami Round-winged Stag Beetle lives Adults 3-6 months.
Size of the Amami Round-winged Stag Beetle
The Amami Round-winged Stag Beetle grows to Males 43.3-65.2mm (captive record 69.9mm).
Basic Info
Origin
Japan (Amami-Oshima, Tokunoshima and Kakeromajima in Kagoshima Prefecture; the subspecies hamaii on Ukejima)
Lifespan
Adults 3-6 months
Care Specifications
Semi-aggressiveSolitaryBreeding: Hard
Sources: Neolucanus - Wikipedia (JA; range of the genus, sizes of the Japanese species, local ordinances and Red List status) / GBIF species page for Neolucanus protogenetivus Kurosawa, 1976 / BE-KUWA Certified Breeding Records (Mushi-sha, FY2025 edition PDF, JA)
Breeding Records & Localities
Captive record (♂)
69.9 mm
Wild record (♂)
65.9 mm
Record source: BE-KUWA 2025 edition, captive records for medium and large Japanese stag beetles (Amami round-winged stag: captive 69.9 mm, Kenzo Takashima, registered 2020, expected maximum 73 mm; wild 65.9 mm, Takeyuki Shuto)
Notable localities
Amami-OshimaTokunoshimaKakeromajima
Regional subspecies
- Neolucanus protogenetivus protogenetivus（This entry） — Amami-Oshima, Tokunoshima, Kakeromajima
- Neolucanus protogenetivus hamaii — Ukejima; a nationally rare species under the Species Conservation Act
Generation codes
- WD
- Wild-caught
- WF1
- Offspring of a wild-caught female
- F1〜
- Captive generations (same locality)
- CBF1
- Cross-locality captive-bred (reset)
Sources:
References & Sources
Edited & verified by: BreederDirect editorial team
The taxonomic, regulatory, and husbandry data on this page are compiled and verified against the authoritative primary sources below.
Taxonomy & Authority
Accepted name: Neolucanus protogenetivus Kurosawa, 1976
Synonyms: Neolucanus progenetivus
Authority databases: GBIF
Nomenclature follows global taxonomic authority databases.
Regulations & Conservation Status
Not CITES-listed
Domestic law: The nominate subspecies is not listed, but Neolucanus protogenetivus hamaii from Ukeshima is a National Endangered Species of Wild Fauna and Flora (effective March 2016), whose sale and transfer are restricted. Collection is also banned by local ordinance on Amami-Oshima and Tokunoshima. Because the listed subspecies cannot be distinguished at species level, this species cannot be traded.
Sources: CITES Appendix (checklist.cites.org) / Ministry of the Environment, List of National Endangered Species of Wild Fauna and Flora
Regulations may change. Always verify the latest information with the relevant authorities.
Amami Round-winged Stag Beetle Listings
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