Feather mites (Acariformes: Analgoidea) associated with the hairy woodpecker Leuconotopicus villosus (Piciformes: Picidae) in Panama
  Researches on the thelytocous parthenogenesis of two species of Oribatid mites - Trhypochthonius tectorum (Berlese) and Platynothrus peltifer (Koch). II. Anatomical, histological and cytological studies of parthenogenetic Females. First part