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The monotypic genus Hormiops Fage, 1933 is so far only known from two groups of granitic islands off the coasts of Peninsular Malaysia and Vietnam. Examination of newly collected material from both archipelagos and of the type series of Hormiops davidovi Fage, 1933 reveals previously disregarded morphological differences sufficient to assign the Malaysian specimens to a distinct species, described here as Hormiops infulcra sp. nov. An updated diagnosis of the genus, as well as a dichotomic key enabling the determination of Hormiops from its close relatives, Hormurus Thorell, 1876 and Liocheles Sundevall, 1833 are also provided. The phylogenetic position, distribution pattern, and ecology of these insular scorpions suggest that they are palaeoendemics, remnants of a previously more widely distributed lineage. A biogeographical model is proposed for the genus based on these observations and on a synthesis of palaeogeographical and palaeoenvironmental data currently available for Sundaland., (Copyright © 2014 Académie des sciences. Published by Elsevier SAS. All rights reserved.)

Euscorpiops cavernicola sp. n., belonging to the family Euscorpiidae Laurie, is described on the basis of two male and two female specimens collected in the Hua Ma cave located in the Quang Khe commune, Ba Be district of Bac Kan province in Viet Nam. The new species presents most features exhibited by scorpions within the genus Euscorpiops, however it may represent the first discovered Scorpiopinae species exhibiting certain adaptations to cave life., (Copyright © 2013 Académie des sciences. Published by Elsevier SAS. All rights reserved.)

A second species of scorpion belonging to the family Pseudochactidae and to the genus Vietbocap is described from two specimens collected in the Thien Duong cave, which belongs to the Vom cave system, in the Phong Nha - Ke Bang National Park, Quang Binh Province, Vietnam. Like the previously described species of Vietbocap, the new species is also a true troglobitic element, the second known for the family Pseudochactidae. This represents the fourth known record of a pseudochactid, and the second from Vietnam., (Copyright © 2011 Académie des sciences. Published by Elsevier SAS. All rights reserved.)

The scorpion fauna of the Island of Côn Son (Poulo Condore), Vietnam is briefly discussed and a new species, Chaerilus phami sp. n. is described. The new species is morphologically distinct from all the other species of Chaerilus described from the mainland in Vietnam., (Copyright © 2011 Académie des sciences. Published by Elsevier SAS. All rights reserved.)

A new species, Isometrus (Reddyanus) deharvengi sp. n., is described from caves of the region of Hon Chong, Kien Giang in southern Vietnam. Comments are also added about the scorpion fauna of Southeast Asia and cave dwelling buthid scorpions., (Copyright 2010 Académie des sciences. Published by Elsevier SAS. All rights reserved.)