
Source: Wikimedia Commons
Eudicella gralli
A central African flower beetle whose green elytra shift through rainbow tints depending on the angle of light. Males have a Y-shaped horn and females a shovel-like tusk. It breeds readily and serves as an entry species among exotic flower beetles.
Eudicella gralli is a flower beetle of the African rainforests; adults measure 25-40 mm. Structural colour in the elytra makes the green ground shift through rainbow tints as the light angle changes. Males carry the Y-shaped horn common to the genus, while females have a shovel-like tusk on the head for digging into wood. GBIF holds most records from the Democratic Republic of the Congo (249), followed by the Republic of the Congo, Uganda and Cameroon. Ben's Beetle Breeding Pages rates Eudicella as a very easy entry-level genus: eggs go into a mix of rotten wood and leaves and the larvae pupate in the same feeding substrate. The same page warns that the many subspecies have often been crossed without proper labelling, so keepers should not mix populations.
Source: Wikipedia (CC BY-SA 4.0)
The Gralli Flower Beetle lives Adults 2-4 months.
The Gralli Flower Beetle grows to 25-40mm.
Origin
Central Africa (Democratic Republic of the Congo, Republic of the Congo, Uganda, Cameroon, Zambia, Kenya)
Lifespan
Adults 2-4 months
Size
25-40mm
Temperature
20〜28℃
Sources: Eudicella gralli - Wikipedia (EN; 25-40 mm, male Y-shaped horn, female digging tusk, larvae in decaying wood) / Ben's Beetle Breeding Pages - Eudicella gralli gralli (easy to breed, rotten wood and leaf substrate, non-cannibalistic larvae, warning against crossing subspecies) / GBIF occurrence records for Eudicella gralli (counts by country)
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
Accepted name: Eudicella gralli (Buquet, 1836)
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.
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Humidity
60〜80%
Adults take nectar, pollen, fruit and beetle jelly; larvae feed on rotten wood and leaf litter
It comes from tropical forest, so the basic rule is to keep the substrate from drying out completely.
Eggs are laid into a mix of rotten wood and leaves. The larvae show little cannibalism and pupate in the same feeding substrate, so they can be raised without being moved out of the laying set. The size of the male horn is said to reflect how well the larvae were kept and fed.
Because cannibalism is rare the larvae can be kept together, though individual containers give steadier results if large adults are the aim. Adult males fight with their horns, so keep them apart except for pairing.
Some accounts give about half a year of larval life and a few months as an adult for Eudicella, which can serve as a guide for this beetle.
The species has many subspecies and stock of mixed origin has circulated for years. Do not cross beetles without locality data. Importing live stock requires the species identification certificate demanded for Scarabaeoidea.
Beginner. This is a beginner-friendly species. No special equipment or experience is required, and it can be kept successfully with basic care setup.
The average lifespan of Gralli Flower Beetle is Adults 2-4 months. With proper care and nutrition, they can live a long and healthy life.
Gralli Flower Beetle typically reaches 25-40mm as an adult. Size may vary depending on care conditions and individual genetics.
Gralli Flower Beetle feeds on: Adults take nectar, pollen, fruit and beetle jelly; larvae feed on rotten wood and leaf litter. Aim for a balanced diet with appropriate feeding frequency.
The price of Gralli 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