Blue Feigning Death Beetles Care
Blue Feigning Death Beetles
(Asbolus verrucosus)
The Blue Feigning Death Beetle, also known as the Desert Darkling Beetle, is native to the arid deserts of the southwestern United States, particularly the Sonoran Desert. These beetles get their name from their unique defense mechanism—when threatened, they will freeze and "play dead," often flipping onto their backs with legs curled to avoid predation. Their matte, powdery-blue coloration comes from a waxy coating that helps prevent water loss, making them exceptionally adapted to dry environments. They typically grow to about 1–1.25 inches in length and have a long lifespan compared to most insects.
Lifespan:
8–10 years with proper care
Sexing:
Males are usually smaller and slimmer than females, but sexing is generally difficult without dissection or magnification. For most keepers, keeping multiple individuals is the easiest way to establish pairs.
Enclosure:
A 5–10 gallon terrarium with secure ventilation is perfect for a small group.
Provide several hides, rocks, and cork bark to create a naturalistic environment.
Use a tight-fitting lid to prevent escape.
Substrate:
A mix of sand, coconut fiber, and soil (kept mostly dry) allows for burrowing.
Depth of 2–3 inches recommended.
Spot clean regularly and change substrate every 2–3 months.
Lighting & Temperature:
Basking Spot: 85–90°F (optional low-watt heat source if room temp is low)
Ambient Temperature: 75–85°F
Cool Side: Room temperature (low 70s is fine)
UVB Lighting: Not required, but a natural day/night light cycle helps regulate activity.
Humidity:
Maintain low humidity (15–30%). These beetles are desert dwellers and do not tolerate moisture well. Good airflow is critical.
Food:
Offer a variety of dried and fresh foods such as:
Dry dog or cat kibble
Fresh vegetables (carrots, leafy greens, squash)
Occasional fruit (apple slices or banana)
Leaf litter and decomposed organic material
Water:
Offer gel water crystals or lightly mist a corner of the enclosure once a week.
Never use an open water dish—risk of drowning is high.
Blue Feigning Death Beetles are one of the most fascinating and low-maintenance invertebrates available in the pet trade. Their long lifespan, quirky behavior, and striking coloration make them a fun addition to any desert-themed enclosure or educational setup. They’re especially great for classrooms or as a beginner insect pet for responsible children.