Two new species of Orobothriurus Maury, 1976 from Argentina and Peru, with comments on the systematics of the genus (Scorpiones: Bothriuridae).

ACOSTA, L.E.; OCHOA, J.A.

Scorpions 2001. In Memoriam Gary A. Polis

British Arachnological Society

Año: 2001; p. 203 - 214

Two new species of the genus Orobothriurus Maury, 1976 (Bothriuridae) are described: O. famatina n. sp. from Sierra de Famatina, province of La Rioja, Argentina, and O. iskay n. sp. from inter-Andean valleys in southern Peru (Departamentos Apurímac and Cusco). Characters defining two species groups in Orobothriurus (pigment and trichobothrial patterns, and the hemispermatophore morphology) are stated. The "alticola" group includes O. alticola (Pocock, 1899), O.paessleri (Kraepelin, 1911), O. curvidigitus (Kraepelin, 1911), O. parvus Maury, 1975, O. wawita Acosta & Ochoa, 2000, and O. famatina n. sp. The "inca" group comprises O. peruvianus (Mello-Leitao, 1948), O. crassimanus Maury, 1975, O. inca Maury, 1975, and O. iskay n. sp. The taxonomic position of O. parvus, previously deemed to be intermediate between the groups but here assigned to the "alticola" group, is discussed. Bothriurus dumayi Cekalovic, 1974 is excluded from Orobothriurus and restored in Bothriurus Peters, 1861. Orobothriurus famatina differs from its nearest relative, O. alticola, by the less developed pigment pattern, relative position of trichobothrium Est, and the number of ventral setae on metasomal segment I; O. iskay n. sp. can be separated from other members of the "inca" group through details of the hemispermatophore morphology (less developed lobe region, basal and internal lobes distinct), the shape of telson, and the number of pectinal teeth.