Species composition of the genus Streptocara Railliet et al., 1912 and the occurrence of these avian nematodes (Acuariidae) on the Canadian Pacific coast

Abstract

Description and figures are presented for the following species and subspecies, which the writer considers should constitute the genus Streptocara: S. crassicauda crassicauda (Creplin, 1829), S. crassicauda longispiculata n. subsp., S. californica (Gedoelst, 1919), S. formosensis Sugimoto, 1930, S. incognita n. sp., and S. recta (Linstow, 1879). Host-lists and data on prevalence in birds, mainly waterfowl, from British Columbia, Canada, are given for these species and Paracuaria tridentata (Linstow, 1877). Yamaguti's 1961 list of species of Streptocara is examined critically; some of the modifications suggested in the literature since 1961 are accepted, and the following changes proposed: S. cirrohamata (Linstow, 1888) to Ingliseria cirrohamata (Linstow, 1888) new genus, new combination; S. triaenucha (Wright, 1879) to Synhimantus (D.) triaenucha (Wright, 1879) n. comb. (syn. S. (D.) canadensis Mawson, 1956); and S. somateriae Ryzhikov, 1960 to synonymy with S. formosensis Sugimoto, 1930.