Wikipedia
Ectrichodiinae
The Ectrichodiinae are a subfamily of assassin bugs (Reduviidae) known for specializing on millipedes as prey. The group comprises more than 600 species in about 115 genera, making it a fairly large subfamily. The bugs are also known for their aposematic coloration, often brightly colored metallic blue, red, or yellow.
Species of this subfamily hide under leaf litter and sometimes boulders and hunt at night.