Cuban blue scorpion (Rhopalurus junceus)
Invertebrates · Difficulty: Intermediate
Key facts and care guidance for Cuban blue scorpion (Rhopalurus junceus) (origin: Cuba (endemic)). Adult size around approx. 6–9 cm. Life expectancy approx. 5–7 years. The values below are carefully researched guidance.
Short answers
Cuban blue scorpion: How big does the enclosure need to be?
25×25×30 cm with vertical cork bark (a bark and tree dweller).
Cuban blue scorpion: What temperature does it need?
Daytime 26–32 °C, at night 22–24 °C.
Cuban blue scorpion: Does it need UVB lighting?
UVB: No UVB needed (nocturnal).
Cuban blue scorpion: How long do they live?
Life expectancy: approx. 5–7 years.
Cuban blue scorpion: Is it suitable for beginners?
Rather not – it is considered an intermediate species (difficulty: Intermediate).
Climate
- Daytime temperature
- 26–32 °C
- Night temperature
- 22–24 °C
- Basking spot
- —
- Humidity
- 50–60 % (substrate slightly damp, not wet)
- UVB
- No UVB needed (nocturnal)
Enclosure
- Minimum size
- 25×25×30 cm with vertical cork bark (a bark and tree dweller)
- Substrate
- A coco and peat mix, slightly damp, vertical cork bark
Feeding
- Food
- House crickets, crickets, roaches
- Feeding interval
- adults 1×/week, fed in the evening or at night
Key facts
- Adult size
- approx. 6–9 cm
- Life expectancy
- approx. 5–7 years
- Origin
- Cuba (endemic)
- Protection status
- Not listed under CITES
- Brumation
- None
- Cohabitation
- Keep them singly – territorial and aggressive towards its own kind (cannibalism). The reason is not fighting but feeding: these animals take anything that fits in the mouth, and a second animal in the enclosure counts.
Notes
Taxonomically placed today as Heteroctenus junceus (ex Rhopalurus junceus). Hardy and robust, but a buthid with painful venom – no hand contact. The venom is used in Cuban cancer research (Vidatox/Escozul).
Do you keep this species?
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Related species
- Giant desert hairy scorpion (Hadrurus arizonensis) – Beginner with some knowledge
- Asian giant forest scorpion (Heterometrus longimanus) – Beginner
- Asian black scorpion (Heterometrus petersii) – Beginner
- Asian forest scorpion (Heterometrus spinifer) – Intermediate
- Brazilian yellow scorpion (Tityus serrulatus) – Expert
- Dictator scorpion (Pandinus dictator) – Intermediate
- Italian scorpion (Euscorpius italicus) – Beginner
- Flat rock scorpion (Hadogenes troglodytes) – Intermediate
What you need to start
To keep Cuban blue scorpion (Rhopalurus junceus) you typically need: a suitable enclosure (25×25×30 cm with vertical cork bark (a bark and tree dweller)), substrate (A coco and peat mix, slightly damp, vertical cork bark), a heat source with a thermostat, UVB lighting, thermometer and hygrometer, a water dish and hides. You will find equipment in the Reptoria marketplace.
The complete, interactive care database is in the Reptoria app.
Last updated: 9 October 2026 · Editor: Reptoria editorial team · Sources include: https://en.wikipedia.org/wiki/Rhopalurus_junceus, https://www.ntnu.no/ub/scorpion-files/r_junceus.php
All values are non-binding guidance and do not replace expert advice. Research thoroughly from several sources before acquiring and keeping an animal, and observe the applicable law (species and animal protection in particular).