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Scarlet Isopod (Merulanella sp.)

Merulanella sp. 'Scarlet'

The Merulanella sp. 'Scarlet'. A Vietnamese isopod (0.6 - 0.7 inches) that defines the concept of 'ultra-rarity' and extreme luxury in the bioactive terrarium. It belongs to the nervous, very fast and demanding Merulanella family, but exhibits a hypnotic deep scarlet red, blood red and vibrant translucent crimson coloration over its entire body. Exceptional but very fragile climbers, they live on rotting vertical woods wrapped in dripping mosses at extreme humidity. A single ventilation error quickly condemns them to an expensive asphyxiating end.

Taxonomy
Class:Malacostraca
Order:Isopoda
Family:Armadillidae
Genus:Merulanella
Species:Merulanella sp. 'Scarlet'

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Environment

Terrestrial

Humidity

75 - 90 %

Day temperature

22 - 26 °C

Night temperature

20 - 23 °C

UVB

None

Species description

Geographic Origin and Habitat: No additional source-verified editorial notes are available about geographic origin and habitat for Merulanella sp. 'Scarlet'. Consult this record's parameters and sources.
Taxonomy and Genetics: No additional source-verified editorial notes are available about taxonomy and genetics for Merulanella sp. 'Scarlet'. Consult this record's parameters and sources.
Behaviour and Habits: No additional source-verified editorial notes are available about behaviour and habits for Merulanella sp. 'Scarlet'. Consult this record's parameters and sources.
Morphology and Sexual Dimorphism: No additional source-verified editorial notes are available about morphology and sexual dimorphism for Merulanella sp. 'Scarlet'. Consult this record's parameters and sources.

Care, breeding and tankmates

Terrarium Setup: Guidance about terrarium setup for Merulanella sp. 'Scarlet' must rely exclusively on the parameters and sources listed on this record.
Lighting and Heating: Guidance about lighting and heating for Merulanella sp. 'Scarlet' must rely exclusively on the parameters and sources listed on this record.
Humidity and Hydration: Guidance about humidity and hydration for Merulanella sp. 'Scarlet' must rely exclusively on the parameters and sources listed on this record.
Feeding and Supplementation: Guidance about feeding and supplementation for Merulanella sp. 'Scarlet' must rely exclusively on the parameters and sources listed on this record.
Compatibility and Coexistence: Guidance about compatibility and coexistence for Merulanella sp. 'Scarlet' must rely exclusively on the parameters and sources listed on this record.
Health and Common Diseases: Guidance about health and common diseases for Merulanella sp. 'Scarlet' must rely exclusively on the parameters and sources listed on this record.

Geographic Origin and Distribution

This species originates from: Vietnam (Alture pluviali e grotte muschiose isolate).

Origin

Central America and CaribbeanEurope, Mediterranean, and West AsiaSouth and Southeast Asia

Terrestrial invertebrate profile

Diet
No verified data available
Life expectancy
No verified data available
Adult size
No verified data available
Lifestyle/Microhabitat
No verified data available
Activity cycle
No verified data available
Sociality
No verified data available
Reproduction
No verified data available
Venom level
No verified data available
Handling tolerance
No verified data available
Brumation
No verified data available
Molting
No verified data available

Image gallery

Licensed images linked to the species or, when marked, to the closest representative taxon.

Related species

Recommendations grouped by close relatives, companion choices, and similar care.

Last updated: 08/10/2026
Scarlet Isopod (Merulanella sp.) (Merulanella sp. 'Scarlet') Care Guide & Terrarium Setup | Atlarium