Opisthorchis Egg

Eggs of Opisthorchis species are 19 to 30 micrometers long by 10 to 20 micrometers wide. They are often indistinguishable from Clonorchis sinensis eggs. Opisthorchis eggs are operculated and have prominent opercular "shoulders" and an abopercular knob. The eggs are embryonated when passed in feces.