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Blue Fang Skeleton Tarantula (Ephebopus cyanognathus)

Ephebopus cyanognathus

The Ephebopus cyanognathus, legendary as the 'Blue Fang Skeleton Tarantula'. A South American predator (4.7-5.5 inches legspan) famous for a breathtaking detail: two gigantic chelicerae of bright metallic Neon Blue color that contrast with the burgundy body and the yellow pedipalps of the young. Belongs to an anomalous genus: although Neotropical, it has no urticating hairs on the abdomen, but possesses them on the pedipalps and launches them by rubbing them (unique case). Highly aggressive, very fast and strictly fossorial (digs deep tubular tunnels). The 'Blue Fang' tolerates no mistakes, demands very high humidity and is considered an aggressive and biting 'Pet-hole' reserved for expert collectors.

Taxonomy
Class:Arachnida
Order:Araneae
Family:Theraphosidae
Genus:Ephebopus
Species:Ephebopus cyanognathus

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Environment

Terrestrial

Humidity

70 - 85 %

Day temperature

23 - 27 °C

Night temperature

21 - 24 °C

UVB

None

Species description

Geographic Origin and Habitat: World Spider Catalog lists French Guiana as the distribution of Ephebopus cyanognathus. The cited taxonomic record does not characterise habitat or captive environmental conditions.
Taxonomy and Genetics: World Spider Catalog accepts Ephebopus cyanognathus West & Marshall, 2000 in the family Theraphosidae. The cited record does not report a genetic result for this species.
Behaviour and Habits: The cited taxonomic record does not report species-specific behavioural observations; none are inferred here.
Morphology and Sexual Dimorphism: The cited taxonomic record does not report morphological measurements or sexual-dimorphism data; none are inferred here.

Care, breeding and tankmates

Terrarium Setup: World Spider Catalog identifies Ephebopus cyanognathus as an accepted theraphosid recorded from French Guiana. This taxonomic record does not establish captive enclosure dimensions, substrate or a husbandry protocol.
Lighting and Heating: The cited record does not provide captive lighting or temperature parameters; none are inferred here.
Humidity and Hydration: The cited record does not provide captive humidity or hydration parameters; none are inferred here.
Feeding and Supplementation: The cited record does not provide a captive feeding or supplementation protocol; none is inferred here.
Compatibility and Coexistence: The cited record does not test cohabitation or establish compatibility criteria; no recommendation is inferred.
Health and Common Diseases: The cited record does not provide a veterinary or disease-management protocol.

Geographic Origin and Distribution

This species originates from: Sud America (Foreste equatoriali della Guyana Francese).

Origin

Amazon, Orinoco, and Guianas

Terrestrial invertebrate profile

Diet
No verified data available
Life expectancy
No verified data available
Adult size
15 cm
The catalog's scalar value is 15 cm. The Herpeton Academy — Ephebopus cyanognathus source reports a maximum adult measurement of 15 cm for this species, recorded as diagonal leg span (DLS). The taxonomic record consulted is Ephebopus cyanognathus. These figures are not interchangeable: the first is the profile's editorial reference, whereas the second is a published maximum under a specific measurement convention; differences among sources can reflect sex, population, life stage and measuring method.
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.

Variants and close relatives

Same atlas type, nearby scientific identity, genus, or family.

Skeleton Tarantula (Ephebopus murinus)

Skeleton Tarantula (Ephebopus murinus)

Ephebopus murinus

Colombian Lesserblack Tarantula (Xenesthis immanis)

Colombian Lesserblack Tarantula (Xenesthis immanis)

Xenesthis immanis

Haitian Brown Tarantula (Phormictopus cancerides)

Haitian Brown Tarantula (Phormictopus cancerides)

Phormictopus cancerides

Indian Violet Tarantula (Chilobrachys fimbriatus)

Indian Violet Tarantula (Chilobrachys fimbriatus)

Chilobrachys fimbriatus

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Similar care

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Last updated: 08/10/2026