Dictyocaulus are a group of nematodes of the superfamily ''Trichostrongyloidea''. These cause both widespread mortality and morbidity, particularly affecting the bronchi tree of ruminants. | Dictyocaulus are a group of nematodes of the superfamily ''Trichostrongyloidea''. These cause both widespread mortality and morbidity, particularly affecting the bronchi tree of ruminants. |