Natural host.—Blatta orientalis, U.S.S.R. (Yakimov and Miller, 1922): Oikomonas sp. and Monas sp. were found in the intestines of 83 percent of 124 cockroaches.
Cockroach, Venezuela (Tejera, 1926).
Family TRYPANOSOMATIDAE
Leptomonas blaberae Tejera
Natural host.—Blaberus sp., Venezuela (Tejera, 1926).
Leptomonas sp.
Natural hosts.—Parcoblatta lata, Parcoblatta pensylvanica, Parcoblatta virginica, U.S.A., Ohio (Semans, 1939, 1941): Hind intestine. Of 70 specimens examined, 86 percent harbored Leptomonas sp.
* Herpetomonas periplanetae Laveran and Franchini
Natural host.—Blatta orientalis, Italy, France (Laveran and Franchini, 1920, 1920a).