First records of the marine water mite family Pontarachnidae Koenike, 1910 from New Zealand (Acari: Hydrachnidia), with the description of one new species
  The genus Sperchon Kramer 1877 in Brazil, with the description of a new species, new records and a key to the Neotropical species of the genus (Acari: Hydrachnidia: Sperchontidae)