Ooenma Tiger Beetle Care Guide | Collection, Husbandry, Feeding, and Breeding | ブリちょく
Insects| ✍️ BreederDirect Editorial
Ooenma Tiger Beetle Care Guide | Collection, Husbandry, Feeding, and Breeding
Complete guide to caring for the Ooenma Tiger Beetle, Japan's largest tiger beetle species. From collection season and habitat to enclosure setup, substrate preparation, feeding methods, egg-laying, and larval rearing—a comprehensive guide for anyone interested in raising this rare insect.
Key Takeaways
Complete guide to caring for the Ooenma Tiger Beetle, Japan's largest tiger beetle species. From collection season and habitat to enclosure setup, substrate preparation, feeding methods, egg-laying, and larval rearing—a comprehensive guide for anyone interested in raising this rare insect.
About the Ooenma Tiger Beetle
The Ooenma Tiger Beetle (Cicindela (Heptodonta) blanchardi) is one of the largest species of the family Cicindelidae found in Japan, reaching a body length of approximately 16–20 mm. It is characterized by lustrous green elytra with white markings, and is considerably larger and more impressive than the common tiger beetle (Cicindela japonica), sometimes called the "path-teaching insect."
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The Ooenma Tiger Beetle is primarily found in sandy-gravelly riverbeds, coastal areas, and sandy forest edges in Kyushu, Shikoku, and southwestern Honshu. It is especially active during sunny summer days on well-lit sandy areas, preying on small insects and small animals with rapid movements.
Habitat Characteristics:
- Sandy-gravelly open ground
- South-facing slopes and cliff faces
- Riverbed and coastal sand areas
Classification and Basic Information
Item
Details
Scientific Name
Cicindela blanchardi (Thomson, 1857)
Common Name
Ooenma Tiger Beetle
Body Length
16–20 mm
Adult Activity Period
May–September (primarily June–August)
Larval Overwintering
Yes (overwinters as L1–L3 larvae)
Distribution
Western Honshu, Shikoku, Kyushu, and Ryukyu Islands
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Collection Tips
Collection Season
Late May through September is the optimal collection season. Activity is particularly intense on sunny days from morning through midday from June to August. On cloudy or rainy days, they hide in their underground burrows, making collection difficult.
Collection Methods
Hand capture when spotted: Requires skill due to their speed. Using a net is more reliable
Using a collecting net (insect net)
Larval collection: They dig vertical burrows (5–8 mm diameter) in sandy ground; use a thin stick to lure them out or excavate them
Note: Some regions have local regulations restricting collection. Always verify the regulations for your collection area.
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Setting Up the Enclosure
Housing
A tall, deep enclosure (such as a plastic reptile container) is recommended. Since tiger beetle larvae dig vertical burrows, the substrate depth must be at least 10–15 cm.
Adult housing: Plastic container 60×30×30 cm or larger (horizontal orientation)
Larval housing: Vertical container or specialized rearing vessel at least 20 cm deep
Choosing Substrate and Soil
Use fine to medium-grained sand (river sand or mountain sand). Natural sand is more suitable than commercially available "insect soil."
Recommended:
- Clean river sand (washed)
- Mix of fine akadama clay pellets and sand (balanced moisture retention and drainage)
Lightly mist the soil surface and maintain conditions where it is neither too dry nor overly moist.
Temperature and Humidity
Ideal temperature: 20–30°C (approximately 25°C is optimal)
Humidity: Maintain substrate surface at a slightly dry state (excessive humidity promotes larval mortality)
Light: Place in a bright location away from direct sunlight
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Feeding
Adult Diet
The Ooenma Tiger Beetle is carnivorous and feeds on small insects, spiders, and earthworms in the wild. The following foods are practical for captive feeding:
Mealworms (both adults and larvae are acceptable)
Crickets (pinhead to small size): They respond well to moving prey
Small insects such as grasshoppers and crane flies (collected from outdoors)
Commercial prepared diets (carnivorous reptile pellets, etc.): Acclimated individuals may eat them
Feeding frequency: Once every 2–3 days, providing only the amount they will consume. Remove uneaten food immediately.
Larval Diet
Larvae remain in their burrows and ambush passing small animals. They will feed on pinhead crickets, small mealworms, or killifish fry (freshwater species) placed near their burrows.
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Breeding and Egg-Laying
Egg-Laying
Mature females insert their ovipositor into sandy substrate and lay eggs individually. Captive breeding requires sandy soil with moderate moisture and adequate light or UV exposure.
Setting Up Egg-Laying Conditions:
- Sandy substrate at least 15 cm deep
- Lightly mist the surface
- A bright location away from direct sunlight
Hatching and Larval Management
Eggs hatch in 2–4 weeks. Hatchlings (L1) immediately begin digging vertical burrows. Larvae develop over 1–2 years through the L1→L2→L3 stages.
Tips for Larval Rearing:
- Individual housing (each larva needs space to dig)
- Avoid moving larvae between containers (destroying their burrows causes stress)
- Mist substrate moderately (avoid overwatering)
- Expose overwintering larvae to 5–15°C temperatures (promotes spring emergence)
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Common Husbandry Problems
Escaping by flying
→ A lid is essential. Adults are capable fliers. Use a fine-mesh lid.
Substrate drying out and larval mortality
→ Do not skip regular misting. Pay special attention during summer months.
Refusing to eat
→ Adults are sensitive to environmental changes. Keep newly acquired individuals in a dark, quiet location for 1–2 days before offering food.
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Summary
The Ooenma Tiger Beetle is one of Japan's most distinctive and beautiful insects. The following points are essential for successful husbandry:
Provide sandy substrate at least 15 cm deep
Feed live small insects (crickets and mealworms)
Maintain temperatures of 20–30°C and moderate humidity (slightly dry)
A lid is mandatory (watch for adult flight attempts)
Allowing larvae to overwinter promotes smooth emergence the following spring
Although this rare insect is subject to regional collection regulations, you can obtain captive-bred specimens from breeders for a more stable introduction. We encourage you to observe one of Japan's largest tiger beetles firsthand.
