Relative size of adult Habrobracon (=Bracon cushmani, a parasite of caterpillars.

Line art illustration of insect size in comparison with a 1-inch ruler also marked in mm, a bug box Credit: Ottawa. Adapted by UC IPM. Huber JT. 1993. Hymenoptera of the World: An Identification Guide. Agriculture Canada, Ottawa. Adapted by UC IPM.
Credit: Ottawa. Adapted by UC IPM. Huber JT. 1993. Hymenoptera of the World: An Identification Guide. Agriculture Canada, Ottawa. Adapted by UC IPM.