
Source: Wikimedia Commons
Mecopoda niponensis
A tall, bulky katydid in green or brown forms that calls a loud 'gacha-gacha' at night. Unusually for its predatory relatives, in the wild it eats almost nothing but kudzu leaves.
Mecopoda niponensis (Haan, 1843) is a katydid (Tettigoniidae) of Honshu from Ibaraki and Niigata southward, Awaji, Shikoku, Kyushu, Oki and Tsushima, as well as Korea and eastern China. It is big, tall and bulky, with the largest side profile of any Japanese katydid, growing to about 70mm. Green and brown individuals occur side by side. It is nocturnal with a very loud call, avoids open ground and lives in undergrowth at woodland edges. Unusually for this carnivorous group it is a herbivore, favouring legumes, especially kudzu, and it grows perfectly well on kudzu alone. Adults appear from late July and are heard in the wild until the end of October. Females lay in soil with a sword-shaped ovipositor, and nymphs hatch the following year from late April to early June. Tied to kudzu thickets, slow-moving and a poor flier, it is vulnerable to habitat loss and is declining, with local populations dying out in many places. It is told from the related M. elongata by wing shape and a darkened pronotum. In Japan live insects are sold in autumn, mainly by shops specialising in singing insects.
Source: Wikipedia (CC BY-SA 4.0)
The Kutsuwamushi grows to Up to about 70mm.
Origin
Honshu (from Ibaraki and Niigata south), Shikoku, Kyushu, Oki, Tsushima, Korea and eastern China
Lifespan
Adults from late July to October (captives have lived until February)
Size
Up to about 70mm
Temperature
20〜28℃
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.
Not covered by CITES or the Invasive Alien Species Act. It is a native species declining with habitat loss, so follow local rules when collecting and never release captives away from their place of origin.
Sources: Ministry of the Environment: List of invasive alien species (JA) / Species+ CITES query (no listing)
Regulations may change. Always verify the latest information with the relevant authorities.
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Humidity
60〜80%
Herbivorous (mainly kudzu and other legume leaves)
It is vulnerable to spoiled food, dirty water and stale air. Use a well-ventilated enclosure and change food and water often.
In the wild it eats almost only kudzu and thrives on it. Captives also take vegetables and dry foods, but artificial diets have been linked to faster ageing and deformities, so base the diet on fresh kudzu leaves.
Females lay in soil with a sword-shaped ovipositor, and nymphs hatch the next year from late April to early June. Development takes around three months, and moult failures become common near the final instar because of the heavy body and long legs, so provide height and perches for moulting.
Adults appear from late July and are heard in the wild until the end of October. With good food, housing and warmth, captives may live into February.
It does not cannibalise but is territorial and will suddenly grapple in cramped containers, so keep few per enclosure.
It is declining with habitat loss and slow to return once lost. Never release captives away from where they were collected. The similar M. elongata has narrower wings upturned near the tip and a darkened pronotal edge.
Intermediate. This is an intermediate-level species. Some prior experience and knowledge of environmental management are recommended.
Kutsuwamushi typically reaches Up to about 70mm as an adult. Size may vary depending on care conditions and individual genetics.
Kutsuwamushi feeds on: Herbivorous (mainly kudzu and other legume leaves). Aim for a balanced diet with appropriate feeding frequency.
The price of Kutsuwamushi varies significantly depending on bloodline, size, captive-bred generation, and sex. Check our market price page for the latest pricing information.
Last updated: September 23, 2026