Periplaneta americana, Denmark and St. Croix (Fibiger, 1913; Fibiger and Ditlevsen, 1914); U.S.A. (Hitchcock and Bell, 1952).
* Gongylonema pulchrum Molin, 1857
Experimental hosts.—Blattella germanica, U.S.A. (Ransom and Hall, 1915, 1916, 1917; Stiles and Baker, 1927; Schwartz and Lucker, 1931; Lucker, 1932; Alicata, 1934a, 1935); Europe (Baylis et al., 1925, 1926, 1926a; Sambon, 1926).
Parcoblatta sp., Alicata (1934, 1935).
* Gongylonema sp.
Natural host.—Periplaneta americana, Brazil (Magalhães, 1900); Algeria (Seurat, 1916); England? (Leiper, 1926).
* Microtetrameres helix Cram, 1927
Experimental host.—Blattella germanica, U.S.A. (Cram, 1934).
* Protospirura bonnei Ortlepp, 1924
Natural host.—Leucophaea maderae, Venezuela (Brumpt, 1931).