Feather mites (Acariformes: Astigmata) of the brown noddy, Anous stolidus (L.) (Charadriiformes: Laridae), with description of two new species from Brazil Author Hernandes, Fabio Akashi Departamento de Ecologia e Zoologia, CCB / ECZ, Trindade, Universidade Federal de Santa Catarina, 88040 - 970 - Florianópolis, SC, Brazil. & CNPq-Brazil Researcher. Author Brito, Guilherme R. R. Departamento de Ecologia e Zoologia, CCB / ECZ, Trindade, Universidade Federal de Santa Catarina, 88040 - 970 - Florianópolis, SC, Brazil. text Acarologia 2022 2022-03-11 62 2 317 331 journal article 2107-7207 Subgenus Sternalloptes Mironov, 1992 (in: Kivganov and Mironov 1992 ) Type species: Pterocolus bisetatus Haller, 1882 , by original designation. The subgenus Sternalloptes currently comprises 21 species, including the new species described below ( Haller 1882 ; Trouessart 1885 ; Dubinin 1951 , 1952 ; Gaud 1957 , 1960 , 1976 ; Mironov 1991 ; Vasyukova and Mironov 1991 ; Kivganov and Mironov 1992 ; Mironov and Kivganov 1993 ; Kivganov 1996 ; Han et al. 2021 ). These mites are associated with birds of the order Charadriiformes (Lari: Laridae , Stercorariidae ) ( Choe and Kim 1989 ; Muzaffar and Jones 2005 ; Dabert et al. 2015; Gomes et al. 2015 ; Tomás et al. 2018 ; Han and Min 2019 ; Mironov and Hernandes 2020 ; Seniczak et al. 2020 ; Han et al. 2021 ), with a few questionable records on Procellariiformes ( Dubinin 1949 ). Mites of this subgenus are characterized by the following combination of features: in both sexes, seta mG of genu II is tooth-like with blunt apex ( Figs. 3B, F ) and idiosomal setae e1 are absent; in males, the posterior end of opisthosoma is widened, and in females, setae f2 , ps1 , and ps2 are absent.