“…Our specimens lack vaginal sphincter, thus were included in the subgenus Oslerus (Oslerus). Olerus (Oslerus) osleri (Cobbold, 1879) is reported in wild and domestic canids in Europe, North America, Africa, Asia and Oceania (Dunsmore & Spratt, 1979;Hare, 1930;Kotani et al, 1995;Ortlepp, 1945). However, reports of this nematode in South America are scarce, restricted to domestic dogs from Chile (Alcaíno & Gorman, 1999;Muñoz, Fredes, Faúndes, Sanz, & Gonzáles, 2007), and C. brachyurus from Brazil (Dias et al, 2012).…”