During a trip to Maracã island, at the Uraricoera river, Roraima, Brazil, between March 16 and 22, 1988, six adults of the Cerabycid beetle Stenodontes spinibarbis(Lin., 1758) were captured, atracted by a mercury vapor/tungsten light bait. Four of these beetles carried three different species of Pseudoscorpions: Lechytia chthoniiformis (Balzan, 1890), Neocheiridium corticum (Balzan, 1890) and Lustrochernes intermedius (Balzan, 1891). The two former species are listed as new to Amazonian region and are found to have foretic behavior for the first time. The latter one, already know from Amazonian region, was never found in foresie. Data of these Pesudoscorions are given, and synonymic citations of each species are listed. Lechytia chthoniiformis is descrived now from male and female separately.