
Source: Wikimedia Commons
Acromantis japonica
A small mantis of woodland interiors and edges from Honshu to Kyushu, about 3 cm long. It belongs to the Hymenopodidae and feigns death when threatened. The very similar Acromantis satsumensis is told apart by its adult season.
The Japanese boxer mantis (Acromantis japonica) is a small member of the Hymenopodidae found in Honshu, Shikoku and Kyushu, and also in Taiwan, the Korean Peninsula and China. It is rarely seen in the Kanto region but is fairly common in western Japan. Males measure 25-32 mm and females 25-31 mm, so the sexes differ little in size and both are small for a Japanese mantis. It lives inside woodland and along its edges, and its most striking trait is feigning death when threatened. The similar Acromantis satsumensis also occurs in Japan, but the two are separated by season: this species is adult from September to December, the other from May to July. The ootheca is squarish and is laid in hollows in stone or wood. Horsehair worm infection is known, with worms recorded emerging from the abdomen.
Source: Wikipedia (CC BY-SA 4.0)
The Japanese Boxer Mantis grows to Males 25-32 mm, females 25-31 mm.
The ideal temperature for the Japanese Boxer Mantis is 20〜25℃.
Origin
Japan (Honshu, Shikoku, Kyushu), Taiwan, the Korean Peninsula and China
Lifespan
One generation a year; adults appear from September to December
Size
Males 25-32 mm, females 25-31 mm
Temperature
Sources: Kodomo to Mushi no Kai: mantises of Hyogo (ootheca guide, care and horsehair worms) / Kamakiri Hakase: temperature and sunlight / Acromantis japonica - Wikipedia (JA) / Acromantis japonica - Wikipedia (EN)
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: Acromantis japonica Westwood, 1889
Authority databases: GBIF
Nomenclature follows global taxonomic authority databases.
Sources: CITES Appendices (species not listed)
Regulations may change. Always verify the latest information with the relevant authorities.
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20〜25℃
Humidity
60〜80%
Live insects (small crickets and flies; fruit flies and aphids for early instars)
The preferred range is 20-25 C, with a tolerance of roughly 15-30 C. Mist it or leave water in a shallow dish. As a small species, keep damp tissue in the container and mist finely enough that no large droplets form.
The ootheca is squarish and laid in hollows in stone or wood. Glue a collected ootheca to a stick with wood glue, put it in a container and keep it outdoors or in a cold room; a warm room will make it hatch in midwinter. Add damp tissue so it does not dry out.
Like mantises generally it is cannibalistic, so house each one separately. Stand the container upright and add perching twigs. It is small and escapes through gaps, so trap a cloth between container and lid.
It has one generation a year and overwinters as an ootheca, with adults from September to December. The similar Acromantis satsumensis is adult from May to July, so the season separates them.
Even adults are only about 3 cm, so offer prey about a third of the body size. Feed fruit flies and aphids during the first two instars. Horsehair worm infection is known. It feigns death when threatened, so do not assume a motionless individual has died.
Intermediate. This is an intermediate-level species. Some prior experience and knowledge of environmental management are recommended.
The ideal temperature for Japanese Boxer Mantis is 20〜25℃. Avoid sudden temperature changes and maintain a stable environment.
Japanese Boxer Mantis typically reaches Males 25-32 mm, females 25-31 mm as an adult. Size may vary depending on care conditions and individual genetics.
Japanese Boxer Mantis feeds on: Live insects (small crickets and flies; fruit flies and aphids for early instars). Aim for a balanced diet with appropriate feeding frequency.
The price of Japanese Boxer Mantis varies significantly depending on bloodline, size, captive-bred generation, and sex. Check our market price page for the latest pricing information.
Last updated: September 16, 2026