The genus Grosphus Simon, 1880 in South-Western Madagascar, with the description of a new species (Scorpiones, Buthidae) Author Lourenço, Wilson R. Musèum national d’Histoire naturelle, Dèpartement Systèmatique et … volution, UMR 7205, case postale 53, 57 rue Cuvier, F- 75231 Paris cedex 05 (France) arachne@mnhn.fr text Zoosystema 2014 2014-09-26 36 3 631 645 http://dx.doi.org/10.5252/z2014n3a5 journal article 10.5252/z2014n3a5 1638-9387 4539572 Grosphus intertidalis Lourenço, 1999 Grosphus intertidalis Lourenço, 1999: 135 . TYPE MATERIAL. — Female holotype : Madagascar , South region, Toliara , 3.5 km N of Toliara (Coastal zone, on the beach sands), IV.1998 ( N. Lutzmann ), ZMH . DIAGNOSIS. — Scorpion of medium size with a total length of 55 to 60 mm . General coloration pale yellow, without any spots. Carapace and tergites moderately to weakly granular. Pectines: pectinal teeth count 28-30 in females and 32-34 in males; basal middle lamellae of each pecten elongated and curved, widening only partially after the first internal tooth – this character is diagnostic of the species. Dorsal carinae on segments II to IV without any posterior spinoid granule. The telson vesicle is not globular in shape, but rather pear-like, particularly in males ( Fig. 3C, D ). Fixed and movable fingers with 10-10 oblique rows of granules. DISTRIBUTION AND ECOLOGY. — Grosphus intertidalis was described based on a single specimen collected in the coastal zone 3.5 km to the north of Tulear ( Toliara ). More recently, Lourenço (2004) described a male specimen collected in the Province of Toliara , Parc National de Tsimanampetsotsa, 21.5 km NE d’Efoetse ( 24°0.5’S , 43°53.9’E ). The specimen was found at 100 m of altitude under a stone, in a slightly disturbed zone of spiny bush. This species remains poorly known and was not represented in most recent samples coming from field inventories.