S. Mahunka szerk.: Folia Entomologica Hungarica 58. (Budapest, 1997)

17 (16) With 3 anal spines. 18 (19) With tenent hairs 19 (18) Without tenent hairs Friesea albida Stach, 1949 Friesea nevadensis Steiner, 1959 20 (15) Abdominal segment without anal spines. 21 (22) Abdominal segment VI without spiniform setae. Tibiotarsi with 3 tenent hairs 22 (21) Abdominal segment VI with 8 spiniform setae and no tenent hairs on tibiotarsi Acknowledgements - Thanks are due to Dirección General de Asuntos del Personal Académico, Universidad Nációnál Autonóma de Mexico for the provided facilities to Dr. J. G. Palacios-Vargas, for travelling to Hungary; to Dr. Judith Najt in the Laboratoire d'Entomologie, Muséum National d'Histoire Naturelle, Paris (France) for her useful comments regarding the preliminary version and drawings; to Dr. Peter Bellinger, California State University for providing literature on Friesea spp. Fjellberg, A. (1990): Tibiotarsal chaetotaxy in Tullbergiinac (Collembola: Onychiuridae). Eni. ' Scand. 21: 431-434. Gisin, H. (1960): Collembolenfauna Europas. Museum d'Histoire Naturelle Genève. Genève, 3 12 Massoud. Z. (1967): Monographie des Neanuridae, collemboies poduromorphe a pièces buccales modifiées. CNRS. Paris, 399 pp. Palacios-Vargas, J. G. (1986): Nuevos registros y nuevas especies neotropicales de Friesia (Collembola: Neanuridae). Folia Entomoi. Me.x. 70: 5-23. (Received: December 16, 1996) Authors' addresses: J. G. PALACIOS-VARGAS Laboratoría Ecología y Sistemática de Microartropódos Departamento Biológia, Facultad Ciencias UNAM 04510 MEXICO Gy. TRASER University Sopron Department for Forest Protection P. O. B. 132 H-9401 Sopron HUNGARY Friesea decipines Steiner, 1958 Friesea inermis Cassagnau, 1958 REFERENCES PP-