† Bacterium alkaligenes Nyberg
Natural vectors.—Periplaneta americana? ("Blatella americana"), England (Shrewsbury and Barson, 1948): From intestinal tract.
† Bacterium delendae-muscae Roubaud and Descazeaux
Source.—Diseased fly larvae.
Experimental infection.—Cockroach, France (Roubaud and Descazeaux, 1923): Organism pathogenic to cockroach when injected.
Bacterium haemophosphoreum Pfeiffer and Stammer
Habitat.—Diseased larvae of Mamestra oleracea.
Experimental infection.—Blatta orientalis and Blattella germanica, Germany (Pfeiffer and Stammer, 1931): Organism pathogenic, when injected, to eight B. orientalis and two B. germanica.