A Parasitization Record of Polytribax penetrator (Smith, 1874) (Hymenoptera, Ichneumonidae, Cryptinae) of Lepidopteran Host

Abstract

Polytribax penetrator (Smith, 1874) (Hymenoptera, Ichneumonidae, Cryptinae) has been known as a parasitoid of Aculeata wasps (Hymenoptera, Eumenidae and Pomplidae) (Masuda, 1941). While we record Neozephyrus japonicus (Murray, 1875) (Lepidoptera, Lycaenidae) as the host of P. penetrator for the first time. This record shows the following biological information: 1) this species is solitary parasitoid; 2) adult wasp of this species emerged from the pupa of the butterfly; 3) the host range of this species is generalist type; 4) a membrane-like wall is present between anterior and posterior parts of host pupa. This is also the second record of Polytribax species of parasitism to Lycaenidae in the world.