''Eusarcus'' is a genus of

harvestmen The Opiliones (formerly Phalangida) are an order of arachnids colloquially known as harvestmen, harvesters, harvest spiders, or daddy longlegs. , over 6,650 species of harvestmen have been discovered worldwide, although the total number of ext ...

found in northeastern Argentina, eastern Paraguay, Uruguay and from northeastern to southern Brazil. One of the oldest genera of the Pachylinae subfamily, the genus contains 34 valid species.

References

Harvestman genera {{Opiliones-stub