
Source: Wikimedia Commons
Debeckius beccarii
A rhinoceros beetle of New Guinea and the only species of Debeckius. It was formerly placed in Beckius and is still sold under that name. Three subspecies are recognised; the BE-KUWA captive record is 78.1mm.
Debeckius beccarii (Gestro, 1876) is a rhinoceros beetle (Scarabaeidae: Dynastinae) of New Guinea and the only species in Debeckius. It was described as Chalcosoma beccarii and later moved to Beckius, but that name was already in use for a fossil fish, so the genus was renamed Debeckius; shops sometimes still label it Beckius. Within the tribe Dynastini it sits in the subtribe Chalcosomina with Chalcosoma and Eupatorus. Three subspecies are recognised: the nominate D. b. beccarii, D. b. koletta and D. b. ryusuii. GBIF records come from West Papua in Indonesia and the highlands of Papua New Guinea, such as Southern Highlands Province. The BE-KUWA 2025 captive record is 78.1mm (expected maximum 86mm). Little has been published on its life history, but, as with relatives such as Chalcosoma, larvae are reared on fermented substrate. In Japan specialist shops handle it, including wild-caught ryusuii.
Source: Wikipedia (CC BY-SA 4.0)
The Beccari's three-horned beetle grows to Captive record 78.1mm.
Origin
New Guinea (West Papua, Indonesia, and the Papua New Guinea highlands)
Lifespan
Little data
Size
Captive record 78.1mm
Temperature
20〜28℃
Humidity
60〜80%
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.
Primary sources
Many live foreign Scarabaeoidea (stag beetles, rhinoceros beetles, flower chafers and relatives) are quarantine pests whose import is banned under Japan's Plant Protection Act, and even importable species require a species-name certificate from a foreign government body under the Invasive Alien Species Act (entry only via designated airports, never by international post). Whether a species may enter must be checked with the Plant Protection Station in advance, so choose domestically bred stock and never release captive beetles.
Sources: Plant Protection Station: Importing Scarabaeoidea (JA) / Plant Protection Station: Importing live insects (JA) / Ministry of the Environment: List of invasive alien species (JA) / Species+ CITES query (no listing)
Regulations may change. Always verify the latest information with the relevant authorities.
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Adults take beetle jelly; larvae eat fermented substrate
There is little numeric temperature data. Many records come from the New Guinea highlands, so keep it away from places where summer heat builds up.
Little is published on breeding. Following relatives in the same subtribe such as Chalcosoma, provide a deep layer of fermented substrate for laying.
Males fight with their horns, so keep adults singly and together only for mating.
Larval duration and adult lifespan are poorly documented.
It may be labelled under the old genus Beckius or under older placements in Chalcosoma or Eupatorus, so check the scientific name and subspecies. Importing foreign stag and rhinoceros beetles is regulated by the Plant Protection Act and the Invasive Alien Species Act (species-name certificate), with each species needing clearance from the Plant Protection Station, so domestically bred stock is the safe choice. Never release captive beetles.
Intermediate. This is an intermediate-level species. Some prior experience and knowledge of environmental management are recommended.
Beccari's three-horned beetle typically reaches Captive record 78.1mm as an adult. Size may vary depending on care conditions and individual genetics.
Beccari's three-horned beetle feeds on: Adults take beetle jelly; larvae eat fermented substrate. Aim for a balanced diet with appropriate feeding frequency.
The price of Beccari's three-horned beetle varies significantly depending on bloodline, size, captive-bred generation, and sex. Check our market price page for the latest pricing information.
Last updated: September 23, 2026