English: Margaropus female, with inset of male posterior nelow, both dorsal. Genus characteristics: 1- Small ticks; body and mouthparts approximately 3mm long; colored brown. 2- Mouthparts are shorter than but same width as the basis capituli. 3- Legs are long and stout; they end in a distinct spur as well as a pair of claws and a pulvillus; males of M. winthemi have legs 3 and 4 with bulging segments. 4- Eyes are distinct in females, but indistinct in males. 5- Scutum and conscutum are plain, without colored patterns. 6- Posterior body margin has no festoons; in males there is terminal bulge (caudal appendage). 7- Ventrally, a pair of sclerotized plates is aligned with anus of males; anal groove is indistinct.