Abstract
A new tapeworm from the family Hymenolepididae and genus Hymenolepis Weinland, 1858 is being described from the intestine of common teal (Anas crecca Linn.) from Jhimpir, Thatta district, Sindh, Pakistan. The new species Hymenolepis jonesae is characterized by having delicate body. Scolex simple, small with four sucker, rostellum armed with a single row of 28 hooks, scolex followed by a narrow neck. Rostellum well developed anteriorly and narrows down posteriorly. Strobilla contains 170–185 proglottides. Testes three, oval to rounded in shape. In most segments there are two poral and one aporal testis. Cirrus sac narrow and elongated. Genital pore are unilateral. Ovary situated away from the poral side, bilobed; vagina thin walled; vitelline gland compact and post ovarian. Eggs numerous almost filling the gravid segments.
