The ichneumon-flies of America north of Mexico: part 12. Subfamilies Microleptinae, Helictinae, Cylloceriinae and Oxytorinae (Hymenoptera: Ichneumonidae). Memoirs of the American Entomological Institute (Gainesville), No. 52 1992: i-ii, 1-470. 37 [Zoological Record Volume 129]