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Hercules Beetle (Dynastes hercules)

Dynastes hercules

The Dynastes hercules, the famous Hercules Beetle. It is the most iconic, spectacular and expensive invertebrate in modern terrariums. This absolute giant (males can reach the incredible length of 6.7 inches including horns) is among the largest flying insects on Earth. Its unmistakable trait is the immense double cephalic/thoracic horn of the male, used in fierce aerial and terrestrial battles to overturn and toss rivals for dominance over females (who are totally devoid of them). The livery is enchanting: the elytra (hard wings) vary from mustard-yellow to olive-green spotted with black, depending on humidity. Breeding is a colossal undertaking of biblical timing: the titanic larva (which can weigh 120 grams, as big as a human fist) spends almost three years immersed and feeding incessantly on specialized fermented soil (Flake Soil), before pupating to generate the ephemeral and astonishing adult.

Taxonomy

Class:Insecta

Order:Coleoptera

Family:Scarabaeidae

Subfamily:Dynastinae

Genus:Dynastes

Species:Dynastes hercules

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Environment

Terrestrial

Humidity

70 - 80 %

Day temperature

21 - 26 °C

Night temperature

18 - 22 °C

UVB

None

Species description

Geographic Origin and Habitat: UF/IFAS reports Dynastes hercules from southern Mexico to Bolivia and the Lesser Antilles, with populations in pockets of montane and lowland rainforest in Brazil, Ecuador, Colombia, and Peru. This distribution does not define conditions at every locality.

Taxonomy and Genetics: UF/IFAS identifies Dynastes hercules as a dynastine scarab beetle in Scarabaeidae and reports that its taxonomic status is uncertain, with different treatments in the literature. No genetic conclusion is added here.

Behaviour and Habits: UF/IFAS reports crepuscular or nocturnal adult flight, with peak activity just before daybreak. It also reports male fights to gain access to females; this is not a general compatibility claim.

Morphology and Sexual Dimorphism: UF/IFAS reports thoracic and cephalic horns in males and their absence in females. It describes male elytra with olive shades, a black suture, and sparsely distributed black spots, while female elytra are usually entirely black; it also reports that increasing humidity causes male elytra to turn black.

Care, breeding and tankmates

Terrarium Setup: UF/IFAS reports that Dynastes hercules larvae are saproxylophagous, feeding on dead wood, and develop in rotten logs and decaying tree trunks. This natural-history observation is not an enclosure specification; the cited source provides no terrarium dimensions, substrate quantity, or captive setup protocol.

Lighting and Heating: UF/IFAS reports laboratory observations of a 27.7-day average egg incubation, three larval instars, and a pupal stage of about 32 days; it also states that little is known about the wild life cycle. These observations do not establish a lighting schedule or heating target for captive keeping.

Humidity and Hydration: UF/IFAS reports that increasing humidity causes male elytra to turn black. The source does not provide a terrarium humidity target or hydration protocol, and none is inferred here.

Feeding and Supplementation: UF/IFAS reports that adults generally feed on rotting fruit fallen to the ground. This natural-history observation does not establish captive quantities, supplementation, or a feeding schedule.

Compatibility and Coexistence: UF/IFAS reports male fights to gain access to females, using horns to squeeze, lift, and toss an opponent. This behaviour record is not a cohabitation recommendation.

Health and Common Diseases: The cited source provides no disease, treatment, or veterinary-management guidance for this species.

Geographic Origin and Distribution

This species originates from: Sud America e Centro America (Foreste tropicali di pianura, boschi umidi incontaminati nelle Antille, Ecuador, Brasile, Colombia).

Origin

Extra-Amazon South AmericaCentral America and Caribbean

Terrestrial invertebrate profile

Diet: No verified data available
Life expectancy: No verified data available
Adult size: 17 cm
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.

Recommended companions

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Similar care

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Species description

Care, breeding and tankmates

Geographic Origin and Distribution

Origin

Terrestrial invertebrate profile

Image gallery

Related species

Variants and close relatives

Emerald Beetle (Chlorocala africana)

Giant African Fruit Beetle (Mecynorrhina torquata)

Spotted Flower Beetle (Stephanorrhina guttata)

Sun Beetle (Pachnoda marginata)

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Crested Gecko (Dalmatian / Super Dalmatian)

Tomato Frog

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