Syn. C. mathuri Jain, 1984
Type host. Common greenshank, Tringa nebularia (Gunnerus) (Syn. Glottis nebularia Gunnerus) (Charadriiformes: Scolopacidae).
Type locality. Patna, Bihar, India.
Additional host. Common sandpiper, Actitis hypoleucos (Linnaeus) (Syn. Tringa hypoleucos Linnaeus) (Charadriiformes: Scolopacidae)— Jain (1984).
Additional locality. Agra, Uttar Pradesh, India—Jain (1984).
Remarks. Cyclocoelum mathuri Jain, 1984 was originally described from two specimens from Actitis hypoleucos collected in the Agra District of India; however, C. mathuri cannot be distinguished from Cyclocoelum mehrotrai Sinha & Sahay, 1975 and is synonymized herein with the latter. Cyclocoelum mehrotrai is larger than C. mathuri (38,000–38,200 compared to 21,800), and although C. mehrotrai has a somewhat smaller cirrus sac (600, 2 % of body length compared to 700, 3 %) and a shorter posttesticular space (542–767, 1 – 2 % of body length compared to about 850, 4 %), the similar percentages of these sizes relative to body length suggest that these differences are a product of growth (size). In addition to the similarities in the measurements, both species have a largely intercecal uterus, the posterior-most uterine loops do not invade the posttesticular space, both are from scolopacid birds from India, and both have a rudimentary oral sucker present—Sinha & Sahay (1975); Jain (1984).