Chaerilus stockmannorum

Chaerilus stockmannorum was formally described from southern Thailand with adults reach about 45–50 mm in length and display a reddish-brown, mottled coloration. In captivity, this species is a humid-forest specialist, requiring constant moisture, moderate warmth, and ample cover. Rarely encountered in the pet trade due to being misidentified as other Chaerilus species, this is one of the largest in it's genus

HABITAT

🌍Geographic Range:

Chaerilus stockmannorum is currently known only from southern Thailand, specifically Trang Province, where the type specimens were collected.
In the original description, the authors note that this species lies spatially within the broader distribution of Chaerilus cimrmani, indicating sympatry or at least overlapping ranges in southern Thai forests.
Later checklists of Thai scorpions confirm its presence in southern Thailand but do not expand its known range beyond that. (No published confirmed records from other countries so far.)

Thus, it is probably endemic or near-endemic to that region (or at least underreported elsewhere).

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🌳Natural Environment:

Chaerilus species in Southeast Asia are generally found in humid forest-floor microhabitats: leaf litter, under dead wood, bark, rocks, decomposing logs, and stones. They are not strongly known for making deep, long burrows. (“They probably do not excavate burrows, sheltering between wood / rocks / leaf litter.”)

A broader comparison of Chaerilus species (e.g. C. pseudoconchiformus) cites that chaerilid scorpions often live under stones, fallen trees, in humid habitats (e.g. moist forest substrate) rather than arid or exposed areas

Thus the natural environment is humid tropical forest at ground level, with dense leaf litter and wood/rock cover, moderate to high moisture, shaded from direct sun, and stable microclimate.

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🌦️Climate Conditions:

Temperature range in tropical southern Thailand forest understory: probably ~22–28 °C
Humidity: high relative humidity, likely 70–95 % in the litter/soil microenvironment. Daily rainfall, seasonal wet/dry cycles, but the forest floor remains relatively stable.
Rainfall: tropical monsoon or rainforest climate, with heavy rains in wet season, high annual rainfall
Shade / light: heavily shaded by canopy; the forest floor sees only diffuse light, not direct sun.
Seasonal variation: some variation in moisture (wet vs less wet season), possibly slight temperature fluctuations, but the sheltered litter zone is buffered.

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PHYSICAL DESCRIPTION

📏Size:

Total length: 45–50 mm in both sexes (adult).

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🎨Color:

Coloration: Reddish-brown, spotted; pedipalp chela and telson red. treatmentuflage in their natural habitat.

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🔎Detail:

Pedipalps: movable and fixed fingers with 11 imbricated rows of granules; chela with 8 carinae; male chela relatively swollen. treatment.
Metasoma: carination pattern detailed in diagnosis; segment V with ventromedian carina bifurcating posteriorly (“Y”).
Pectines: 6 teeth in males, 4 in females.

CAPTIVE CARE

📏Enclosure Size:

A small, terrestrial enclosure of about 10" × 10" × 10" (25 × 25 × 25 cm) is suitable for a single Chaerilus stockmannorum. They are forest-floor dwellers that use tight retreats rather than extensive burrows, so floor space and stable microclimate are more important than height. Provide a securely fitting lid and modest ventilation to retain humidity.

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🌱Substrate:

Use a moisture-retentive mix of coco fiber and organic topsoil or leaf-litter soil, optionally with some sphagnum or decayed hardwood debris.

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🕳️Hiding Spots:

Provide cork bark, small caves, or half-buried rocks to offer shelter. Ventilation: Maintain high humidity, decrease ventilation.

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🌡️Temperature:

Keep between 20-25°C, A small heat mat on one side of the enclosure can help regulate warmth.

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💧Humidity:

Requires moderate to high humidity levels (70-80%). Regular misting is recommended, but avoid waterlogging the substrate.

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🥣Water Source:

A small bottle cap sized dish filled with fresh water or occasional misting is sufficient.

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🐛Food:

Small live prey such as pinhead crickets, small roaches, or fruit flies.

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⏰Feeding Schedule:

Feed once every week or two.

STATS

LATIN NAME:

• Chaerilus stockmannorum

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COMMON NAME:

• Stockmann Bush Scorpion

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TEMPERATURE

• 20°- 25°

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TEMPERAMENT:

• Calm & Uses thanatosis

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HUMIDITY:

• 80%

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COMMUNAL:

• Yes

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SIZE:

• Up to 5cm

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ECOLOGY:

• Terrestrial

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SUBSTRATE:

• Water retentive soil

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ORIGIN:

• Thailand, Trang Province

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