﻿AbstractThe genusClimaciellaEnderlein, 1910 is a remarkable group of mantidflies (Neuroptera:Mantispidae:Mantispinae) distributed from Canada to Argentina, including parts of the Caribbean. This genus comprises nine valid extant species plus an extinct species from the late Oligocene of France. Species exhibit Batesian mimicry with vespid wasps (Vespidae). Herein, six species ofClimaciellafrom French Guiana are documented. Before this study onlyC.semihyalina(Le Peletier de Saint Fargeau & Audinet-Serville inLatreille et al. 1825) was known from this territory. Two new species,C.elektropteraArdila-Camacho, Winterton & Contreras-Ramos,sp. nov.andC.nigriflavaArdila-Camacho, Winterton & Contreras-Ramos,sp. nov., are described as well as the first records ofC.amapaensisPenny, 1982, andC.tincta(Navás, 1914) provided from French Guiana. An unknown species recorded from a single female specimen is also presented. Based on the examination of material ofC.amapaensisrecorded here, a specimen previously recorded from Colombia as belonging to this species is herein proposed as a new species,C.risaraldensisArdila-Camacho,sp. nov.A taxonomic key and high-resolution images of the species from French Guiana are provided.