The family Opilioacaridae (Acari: Parasitiformes) in North and Central America, with description of four new species
  Description of the immature stages of Ixodes (I.) sinaloa Khols and Clifford (Acarina: Ixodidae), from rodents in Mexico and Nicaragua
  The labidocarpid batmites of Nicaragua (Listrophoroidea: Labidocarpidae)