
Source: Wikimedia Commons
Carabus blaptoides
A ground beetle endemic to Japan, its head and pronotum drawn out forward so that it can push them into a snail shell and eat the body inside. The elytra are fused, so it cannot fly, and it has split into local subspecies.
Carabus blaptoides is a ground beetle endemic to Japan, 30-70 mm long, with the head and pronotum of the adult drawn out forward. The shape is understood as an adaptation for pushing the head deep into a snail shell, injecting digestive fluid and eating the dissolved body, and the Japanese name refers to that posture. The two elytra fuse after eclosion and will not open, and the hind wings are reduced, so the beetle cannot fly. Its poor dispersal has allowed local forms to diverge, and besides the nominate form the subspecies rugipennis, viridipennis, babaianus, fortunei, oxuroides, capito and brevicaudus are recognised. When threatened it sprays a strongly acidic fluid based on methacrylic acid from the tip of the abdomen, which inflames the eyes. The larvae also eat snails and, unlike other ground beetles, reach the final instar at the second stage. Winter is passed either as an adult or as a final-instar larva.
Source: Wikipedia (CC BY-SA 4.0)
The Snail-eating Ground Beetle lives Adults 1-2 years.
The Snail-eating Ground Beetle grows to 30-70mm.
Origin
Japan (Hokkaido, Honshu, Shikoku, Kyushu and the islands of Awashima, Sado, Izu-Oshima, Oki, Goto, Tsushima and Yakushima)
Lifespan
Adults 1-2 years
Size
30-70mm
Sources: Damaster blaptoides - Wikipedia (JA; size, range, subspecies, snail diet, defensive secretion, two larval instars, substitute food in captivity) / GBIF species page for Carabus blaptoides (Kollar, 1836), with Damaster blaptoides as a synonym / GBIF occurrence records for Carabus blaptoides (counts by country)
Edited & verified by: BreederDirect editorial team
The taxonomic, regulatory, and husbandry data on this page are compiled and verified against the authoritative primary sources below.
Accepted name: Carabus blaptoides (Kollar, 1836)
Synonyms: Damaster blaptoides Kollar, 1836
Authority databases: GBIF
Nomenclature follows global taxonomic authority databases.
Sources: CITES Appendix (checklist.cites.org)
Regulations may change. Always verify the latest information with the relevant authorities.
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Temperature
20〜28℃
Humidity
60〜80%
Land snails, insects, earthworms, fallen fruit and tree sap
It lives in and around forest and overwinters inside rotten wood, under leaf litter or under stones, so a container should offer a damp layer of leaf mould it can burrow into and somewhere to hide.
After mating the female makes a small chamber in the soil with the tip of her abdomen and lays her eggs one at a time. The eggs are white and jellybean-shaped, about a centimetre long, among the largest of any insect. Larvae eat snails in both the first and second instars, the second being the last, after which they build a pupal chamber deep in the soil. Feeding on snails is said to be necessary for the ovaries to mature.
It is strongly predatory and will eat others of its kind if housed together, so keep it singly and do not put it with other insects.
Because it overwinters as an adult or as a final-instar larva, adults live from one year into the next. At the insectarium of Tama Zoological Park small snails for the young larvae proved hard to obtain, and ramshorn snails breeding in the park's tanks were reported to work well as a substitute.
The secretion sprayed from the tip of the abdomen contains methacrylic acid and can cause dermatitis. It can be aimed upward as well as backward, so do not pin the beetle down by hand or bring your face close. Because the local subspecies are strongly differentiated, do not house or cross beetles from different localities.
Intermediate. This is an intermediate-level species. Some prior experience and knowledge of environmental management are recommended.
The average lifespan of Snail-eating Ground Beetle is Adults 1-2 years. With proper care and nutrition, they can live a long and healthy life.
Snail-eating Ground Beetle typically reaches 30-70mm as an adult. Size may vary depending on care conditions and individual genetics.
Snail-eating Ground Beetle feeds on: Land snails, insects, earthworms, fallen fruit and tree sap. Aim for a balanced diet with appropriate feeding frequency.
The price of Snail-eating Ground Beetle varies significantly depending on bloodline, size, captive-bred generation, and sex. Check our market price page for the latest pricing information.
Last updated: September 17, 2026