[7] All species within the genus Trissolcus are egg parasitoids of Pentatomoidea (stink bugs and their allies).

[12] The samurai wasp is native to Eastern Asia, including China, Japan, Korea, and Taiwan.

[13] In 2014, two adventive populations were found in the United States during surveys to identify which North American parasitoids might be attacking brown marmorated stink bug.

[16] Trissolcus japonicus is currently the subject of biological control programs against the brown marmorated stink bug (BMSB) in the US, Europe, and New Zealand.

[18][19] Recent redistribution efforts of T. japonicus in New York State also engages citizen science project participants in reducing urban BMSB populations.