Lanugo is a genus of wasps belonging to the family Ichneumonidae. The name refers to the Latin word lanugo, meaning soft, downy hair, due to the hair found on species within this genus. This genus differs from the otherwise similar genus Compsocryptus by its "moderately short, straight ovipositor rather than a longer upcurved one, axillus vein closer to anal margin of hind wing, front size of areolet narrower."

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