Ichneumon insidiosus is a species belonging to the family Ichneumonidae subfamily Ichneumoninae.

It was first described by Constantin Wesmael in 1844.

[1][2] Subspecies include:[3] Ichneumon insidiosus can reach a length of about 10 millimetres (0.39 in).

This parasitic wasp has a black head and thorax, most of the legs are yellowish, while the abdomen is reddish with a black tip.

This species is present in most of Europe (Andorra; Austria; Azerbaijan; Belarus; Belgium; Bulgaria; China; Croatia;Czech Republic; Slovakia; Finland; France; Germany; Hungary; Iran; Ireland; Italy; Liechtenstein; Netherlands; Poland; Portugal; Romania; Russia; Spain; Sweden; Switzerland; United Kingdom; former Yugoslavia).