"Ectobia" spp., Zanzibar and Saint Kitts, B.W.I. (Thaxter, 1902, 1908): Possibly on species that are now in the genus Blattella rather than in the genus Ectobius as it is known today, because Thaxter also used the synonym Ectobia germanica for the German cockroach, Blattella germanica.
Experimental hosts.—Blattella germanica and Blattella vaga, U.S.A. (Richards and Smith, 1954).
Herpomyces forficularis Thaxter
Natural hosts.—Cockroaches, Mauritius? and Fiji (Thaxter, 1902, 1908, 1931): On antennae.
Herpomyces gracilis Thaxter
Natural host.—Blattella humbertiana, Philippine Islands, Luzon (Thaxter, 1931): On antennae.
Herpomyces grenadinus Thaxter
Natural host.—Cockroach, Grenada, B.W.I. (Thaxter, 1931): On antennae of a "brown wingless blattid."