Sphecixenos esakii (Hirashima & Kifune, 1962) comb. nov.
Pseudoxenos esakii Hirashima & Kifune, 1962: 175.
Paraxenos esakii (Hirashima & Kifune, 1962) (new combination by Kinzelbach 1971b).
Hosts.
Isodontia maidli (Yasumatsu, 1938) (Kifune and Tano 1985); Isodontia nigella (F. Smith, 1856) (as Sphex nigellus F. Smith, 1856) (Hirashima and Kifune 1962).
Distribution.
Japan (Hirashima and Kifune 1962).