Blue Side Warrior Beetle for sale from Big Z's (Pasimachus subsulcatus). Spice-rated keeper notes, care guidance, and live-arrival packing where eligible.
Jet black, edged in electric blue, and built to hunt
Pasimachus subsulcatus, the Blue Side Warrior Beetle, is a large predatory ground beetle out of the American South. Picture a jet black tank with a razor line of metallic blue or violet running down each edge of its shell. This is no slow scavenger. It is an active hunter with big, powerful jaws made for running down other insects, and at 1 to 1.25 inches it moves fast and looks like armor with an attitude.
This is a look, do not touch animal. Those jaws deliver a genuinely painful pinch, and grab it and it fires off a sharp, foul defensive odor. Keep it solo, because it is cannibalistic and will eat tankmates. Care is beginner friendly, and it is hardy and long lived: a couple of inches of half sand, half coco substrate, a cork bark hide, room temperature, and one lightly damp corner, fed crickets, roaches, or superworms every few days. Check the care guide before setup and you will have a striking, low fuss predator on display for years.
The numbers live in the care guide. Enclosure size, temps, humidity, feeding schedule, premolt signs, handling boundaries: it's all in the care guide for this exact fella. Start with the full Advanced guide, or click for the quick Open the Simple version →
Invertebrate
Blue Side Warrior Beetle for sale from Big Z's (Pasimachus subsulcatus). Spice-rated keeper notes, care guidance, and live-arrival packing where eligible.
Jet black, edged in electric blue, and built to hunt
Pasimachus subsulcatus, the Blue Side Warrior Beetle, is a large predatory ground beetle out of the American South. Picture a jet black tank with a razor line of metallic blue or violet running down each edge of its shell. This is no slow scavenger. It is an active hunter with big, powerful jaws made for running down other insects, and at 1 to 1.25 inches it moves fast and looks like armor with an attitude.
This is a look, do not touch animal. Those jaws deliver a genuinely painful pinch, and grab it and it fires off a sharp, foul defensive odor. Keep it solo, because it is cannibalistic and will eat tankmates. Care is beginner friendly, and it is hardy and long lived: a couple of inches of half sand, half coco substrate, a cork bark hide, room temperature, and one lightly damp corner, fed crickets, roaches, or superworms every few days. Check the care guide before setup and you will have a striking, low fuss predator on display for years.
The numbers live in the care guide. Enclosure size, temps, humidity, feeding schedule, premolt signs, handling boundaries: it's all in the care guide for this exact fella. Start with the full Advanced guide, or click for the quick Open the Simple version →
Pasimachus subsulcatus - Spice 2: Beginner. Burrow Buddy: single adult only, with 2-3 in of mixed substrate, cork cover, and a secure lid
Pasimachus subsulcatus
Big Z's Quick Verdict: A large, flightless southeastern ground beetle built to hunt. Hardy at normal room temperature, but display-only: the mandibles can pinch and the defensive spray can strongly irritate eyes, nose, and other mucous membranes.
| Temp | 68-78°F working range; stable room temperature, no added heat unless the room runs cool |
|---|---|
| Humidity | Moisture gradient with cross ventilation; lightly moist lower substrate/retreat at one end, with part of the surface allowed to dry (30-60%) |
| Setup | Ventilated terrestrial predatory-ground-beetle setup |
| Substrate | 2-3 in pesticide-free soil/coco mixed with sand, topped with leaf litter and cork cover |
| Feeding | Cultured crickets, roaches, mealworms, or other insect larvae 1-2x weekly; remove remains |
| Handling | Display only: strong mandibles and an acidic defensive spray; use a catch cup |
Humidity zones: Very Low under 30% - Low 30-60% - Low-Moderate 40-70% - Moderate 60-80% - Moderate-High 70-85% - High 80%+ - Very High 90%+
Current Big Z's catalog: Yes
Pasimachus subsulcatus
Keeper Snapshot: A large, flightless southeastern ground beetle built to hunt. Hardy at normal room temperature, but display-only: the mandibles can pinch and the defensive spray can strongly irritate eyes, nose, and other mucous membranes.
| Temperature | 68-78°F working range; stable room temperature, no added heat unless the room runs cool |
|---|---|
| Humidity | Moisture gradient with cross ventilation; lightly moist lower substrate/retreat at one end, with part of the surface allowed to dry (30-60%) |
| Setup Type | Ventilated terrestrial predatory-ground-beetle setup |
| Substrate | 2-3 in pesticide-free soil/coco mixed with sand, topped with leaf litter and cork cover |
| Feeding | Cultured crickets, roaches, mealworms, or other insect larvae 1-2x weekly; remove remains |
| Care Difficulty | Spice 2: Beginner |
| Handling | Display only: strong mandibles and an acidic defensive spray; use a catch cup |
Humidity zones: Very Low under 30% - Low 30-60% - Low-Moderate 40-70% - Moderate 60-80% - Moderate-High 70-85% - High 80%+ - Very High 90%+
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