''Oesophagostomum'' is from the superfamily ''Strongyloidea''. The female is larger than the male at around 2cm in length. The family is characterized by a large buccal capsule, and has leaf crowns surrounding the mouth. | ''Oesophagostomum'' is from the superfamily ''Strongyloidea''. The female is larger than the male at around 2cm in length. The family is characterized by a large buccal capsule, and has leaf crowns surrounding the mouth. |