Compressalges Dubinin, 1950

Waki, Tsukasa & Shimano, Satoshi, 2022, Redescription of two parasitic feather mites sampled from the last two Crested Ibises, Nipponia nippon (Temminck, 1835) (Pelecaniformes: Threskiornithidae) lived in Japan, Zootaxa 5116 (1), pp. 136-150 : 138

Genus Compressalges Dubinin, 1950

Type species: Compressalges nipponiae Dubinin, 1950 , by original designation.

This genus includes only the type species. Within the family Caudiferidae , this genus clearly differs from two other genera, Caudifera Gaud & Mouchet, 1959 and Semicaudifera Gaud & Atyeo, 1996, in having the following features. In males of Compressalges , the opisthosoma is strongly narrowed posteriorly and with a pair of elongated opisthosomal lobes, the ventral side of opisthosoma has long epimerites IVa and adanal apodemes, and legs IV are hypertrophied; in females, the external copulatory tube is absent and the copulatory opening is situated terminally between setae ps1 ( Dubinin 1950; Gaud & Atyeo 1996).