The scorpions from the Mitaraka Massif in French Guiana (Scorpiones: Buthidae, Chactidae) Author Lourenço, Wilson R. Institut de Systématique, Évolution, Biodiversité (ISYEB), Muséum national d’Histoire naturelle, CNRS, Sorbonne Université, EPHE, case postale 30, 57 rue Cuvier, F- 75231 Paris cedex 05 (France) wilson. lourenco @ mnhn. fr lourenco@mnhn.fr text Zoosystema 2018 2018-07-23 40 14 367 374 journal article 9264 10.5252/zoosystema2018v40a14 94a0febe-8d5b-4f8c-a4e4-175ae92d3878 1638-9387 4335854 urn:lsid:zoobank.org:pub:C868777B-0BA7-4B34-B6BD-02395C6CE14A Tityus ( Archaeotityus ) silvestris Pocock, 1897 Tityus silvestris Pocock, 1897: 363 , 364. NEW MATERIAL . — French Guiana . 1 ♂ , Mitaraka , ‘ La Planète Revisitée MNHN /PNI Guyane 2015 ( APA 973-1 )’, 02°13’59.1”N , 54°26’37.9”W , 433 m , tropical moist forest – in plateau, 2 -8.III.2015 ( M. Pollet ). — 1 ♀ , MTK-HC, Mitaraka ( Hand Catch ), 24 - 27.II.2015 ( E. Poirier , P.-H. Dalens & J. Touroult ) . REMARK This species was described by Pocock (1897) from the region of Santarém in Brazilian Amazonia. Subsequently it proved to be largely distributed all over French Guiana and the Amazon region. It presents a very high polymorphism for some morphometric characters ( Lourenço 1988 ). It was recorded for several sites in French Guiana by Lourenço (1983) , but the record for the Mitaraka region is new.