Natural vectors.—Blatta orientalis, Poland (Nicewicz et al., 1946): Isolated from intestinal tract.
* Clostridium novyi (Migula) Bergey et al. or
* Clostridium sporogenes (Metchnikoff) Bergey et al.
Natural and experimental vectors.—Blatta orientalis, Italy (Cao, 1898).
* Clostridium perfringens (Veillon and Zuber) Holland
Natural vectors.—Cockroaches [presumably Blatta orientalis, Blattella germanica, and/or Periplaneta americana], Egypt (El-Kholy and Gohar, 1945).
* Clostridium tetani (Flügge) Holland
Experimental vectors.—Blatta orientalis, Italy (Cao, 1898).
* Clostridium spp.
Natural vectors.—Periplaneta americana? ("Blatella americana"), England (Shrewsbury and Barson, 1948).