MACRONYSSIDAE IN WILD BIRD NESTS IN MEXICO, INCLUDING NEW SYNONYMIES, AND THE GENUS PELLONYSSUS IN THE NEW WORLD (ACARI: MESOSTIGMATA)

Pellonyssus nidicolus Baker, Delfinado, and Abbatiello, 1976 is relegated to the status of a junior synonym of Pellonyssus reedi (Zumpt and Patterson, 1952). The synonymy of Pellonyssus passeri Clark and Yunker, 1956 with P. reedi is sustained. The Pellonyssus specimens reported by Estébanes-González (1997) are identified here as belonging in part to P. reedi and in part to P. marui Yunker and Radovsky, 1966, the first records of these species in Mexico. The third identified species of Pellonyssus known in the New World is a parasite of hummingbirds, Pellonyssus gorgasi Yunker and Radovsky, 1966, previously reported from Mexico. Keys to identify the females, males, and protonymphs of these 3 species are given. A character grid is given to compare features of females of the 9 valid species of Pellonyssus in the world. The subspecies Ornithonyssus sylviarum utrechtensis Micherdzinski, 1980 is synonymized with the nominal subspecies O. s. sylviarum (Canestrini and Fanzago, 1877).Pellonyssus nidicolus Baker, Delfinado, and Abbatiello, 1976 es un nuevo sinónimo de Pellonyssus reedi (Zumpt y Patterson, 1952). La sinonimia de Pellonyssus passeri Clark y Yunker, 1956 con P. reedi se mantiene. Los ejemplares de Pellonyssus reportados por Estébanes-González (1997) son identificados aquí como pertenecientes en parte a P. reedi y en parte a P. marui Yunker y Radovsky, 1966, es el primer reporte de estas especies en México. La tercera especie identificada de Pellonyssus conocida en el Nuevo Mundo es un parásito de colibrís Pellonyssus gorgasi Yunker y Radovsky, 1966, previamente reportado de México. Las claves para identificación de hembras, machos y protoninfas de estas 3 especies se incluyen. Un carácter común se da para comparar rasgos distintivos de las hembras de 9 especies validas de Pellonysssus en el mundo. La subespecie Ornithonyssus sylviarum utrechtensis Micherdzinski, 1980 es sinonimizada con la subespecie nominal O. s. sylviarum (Canestrini y Fanzago, 1877)

The dermanyssid mites of Panama (Acarina: Dermanyssidae)

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Acari on murine rodents along an altitudinal transect on Mauna Loa, Hawaii

Reports were scanned in black and white at a resolution of 600 dots per inch and were converted to text using Adobe Paper Capture Plug-in. Presented at IV. International Congress of Acarology, Saalfelden, Austria, August 1974; to appear with similar content in the Proceedings of congress.Rodents were trapped seasonally during a two-year period at 14 primary sites from 840 to 2440 m on a transect (with additional collecting to 2895 m), and intensively collected in the Kilauea Forest near the transect. The sampled habitats were not in the proximity of human habitations. Three of the four murine species present in the Hawaiian Archipelago were taken: Mus musculus, Rattus rattus, and R. exulans. Ectoparasites were recovered from rodents by a standardized washing technique. Mammalogical and parasitological data were analyzed by computer. The occurrence, host associations, and spatial distribution of some Acari are treated here. Significant correlations, including those for some permanently parasitic mites, are partially independent of host factors and are associated with local differences in climate.We are grateful to Professor A. Fain for providing initial determinations of the two species of nasal mites

Acari on Murine Rodents on Mauna Loa, Hawai'i

Western Region, National Park Servic