
Source: Wikimedia Commons
Jumnos ruckeri
A southeast Asian flower beetle with a steel-blue head and deep shining green elytra marked with white or orange spots and bands. Males have elongated front tarsi, which makes the sexes easy to tell apart.
Jumnos ruckeri was described by Saunders in 1839 and measures 25-35 mm. The head is steel blue while the pronotum and elytra are a deep shining green, with two large white or orange spots near the tip of the scutellum and two broad bands of the same colour near the apex of the elytra. The hind wings are black and the legs long and green. Males have longer front tarsi than females, so the sexes can be told apart on sight. GBIF holds most records from Thailand (50), followed by Malaysia (29), India (22) and Vietnam (8), so the range runs from mainland southeast Asia to the southern flank of the Himalaya. Subspecies such as pfaneri and tonkinensis are recognised. Reports on husbandry or captive breeding specific to this species are scarce.
Source: Wikipedia (CC BY-SA 4.0)
The Rucker's Flower Beetle lives Adults 3-6 months.
The Rucker's Flower Beetle grows to 25-35mm.
Origin
Southeast and South Asia (Thailand, Malaysia, India, Vietnam, Bhutan, southern China, Nepal)
Lifespan
Adults 3-6 months
Size
25-35mm
Temperature
20〜28℃
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.
Accepted name: Jumnos ruckeri Saunders, 1839
Authority databases: GBIF
Nomenclature follows global taxonomic authority databases.
Plant Protection Act: When importing live specimens of Scarabaeoidea (including rhinoceros beetles, stag beetles, flower beetles, etc.), a species identification certificate issued by the exporting country government agency or equivalent must be attached in accordance with the Invasive Species Act (import ports are limited to Narita, Chubu, Kansai, Fukuoka, and Kagoshima airports). This species itself is not a designated invasive species, and import is possible upon submission of the certificate.
Sources: Ministry of the Environment, Invasive Species Act: "Guidance for Those Importing Live Insects in Scarabaeoidea" / CITES Appendix (checklist.cites.org)
Regulations may change. Always verify the latest information with the relevant authorities.
Find listings for this species
Humidity
60〜80%
Adults take fruit and beetle jelly; larvae feed on rotten wood and leaf litter
Its range takes in tropical and subtropical montane forest, so it may prefer cooler conditions than lowland tropical species; avoid keeping it hot.
Breeding records for this species are few, so follow the usual method for flower beetles: eggs are laid into a mix of rotten wood and leaves and the larvae raised in the same medium. Laying conditions and larval period are not yet known for this beetle.
Adult males fight, so keep them apart except for pairing. Cannibalism has not been reported in the larvae of this species, but individual containers are the safer choice.
Captive records are limited, so plan larval period and adult lifespan on the usual pattern for flower beetles.
Importing live stock requires the species identification certificate demanded for Scarabaeoidea. Several subspecies exist and the markings run white in some populations and orange in others, so do not cross beetles from different localities.
Intermediate. This is an intermediate-level species. Some prior experience and knowledge of environmental management are recommended.
The average lifespan of Rucker's Flower Beetle is Adults 3-6 months. With proper care and nutrition, they can live a long and healthy life.
Rucker's Flower Beetle typically reaches 25-35mm as an adult. Size may vary depending on care conditions and individual genetics.
Rucker's Flower Beetle feeds on: Adults take fruit and beetle jelly; larvae feed on rotten wood and leaf litter. Aim for a balanced diet with appropriate feeding frequency.
The price of Rucker's Flower 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 17, 2026