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January 2014

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J. Judson Wynne 1and Kyle D. Voyles 2 1Department of Biological Sciences, Colorado Plateau Biodiversity Center, Colorado Plateau Research Station and Landscape Conservation Initiative, Northern Arizona University, Box 5614, Building 56, Suite 150, Flagstaff, AZ 86011. URL: http://www.jutwynne.com 2Saint George Field Office, Bureau of Land Management, 345 E. Riverside Dr., St. George, UT 84790. ABSTRACT: Prior to this study, there was no information on arthropods, bats, and other vertebrates of caves in north-westernmost Arizona. Based on invertebrate and vertebrate inventory work conducted during 2005 and 2006, we provide future directions for conservation and management for caves on Grand Canyon - Parashant National Monument, northwestern Arizona. Baseline investigations to find and identify arthropods, bats, and other vertebrates were conducted at 7 of the largest known caves on the monument. We identified 52 morphospecies including 44 arthropods, 4 bats, and 4 other vertebrates. Of the cave-dwelling arthropods, we found 10 eisodophiles, 6 troglophiles, 8 questionable troglophiles, 7 trogloxenes, 8 accidentals, 3 taxa of unknown cave affiliations, and 2 mammalian parasites. We made several contributions to the entomological record including 7 new species (with 2 new genera), 3 possible new species, one range extension, and one possible range extension. Also, we identified 5 bat roosts-1 hibernaculum, 2 night roosts, and 3 summer roosts of unconfirmed use. Observed arthropod richness per cave ranged from 1 to 14 morphospecies, and observed bat and other vertebrate (combined) richness was 1-3 morphospecies. We did not detect any cave-adapted arthropods during this investigation. For the caves sampled, we are uncertain whether the lack of cave-adapted taxa is due to (a) low nutrient input and high cryptoaridity associated with many southwestern cave systems or (b) lack of intensive sampling. Despite the lack of cave-adapted species, 5 of the 7 caves inventoried are considered of high management concern. Additional research at these caves will be required to obtain the data necessary to best manage and protect these systems. RESUMEN: Anterior a este estudio, no había información sobre los artrópodos, murciélagos y otra fauna en las cav- ernas al noroeste de Arizona. Basados en el inventario de invertebrados y vertebrados realizados durante 2005 y 2006, nosotros proveemos las futuras direcciones para la investigación y gestión de cavernas del Grand Canyon-Parashant National Monument, noroeste de Arizona. Investigaciones iniciales fueron realizados en artrópodos, murciélagos y fauna en 7 de las más grandes cavernas conocidas. Identificamos 52 morfoespecies incluyendo 44 artrópodos, 4 murciélagos y 4 fauna silvestre. De los artrópodos, hubo 10 eisodofilos, 6 troglofilos, 8 pseudo-troglofilos, 7 trogloxenos, 8 acciden- tales, 3 desconocidas y 2 ectoparásitos. Realizamos varias contribuciones al registro entomológico incluyendo 7 nuevas especies (con 2 nuevos géneros), 3 posibles nuevas especies, una expansión distribucional y una posible expansión dis- tribucional. También, identificamos 5 refugios de murciélagos: 1 hibernáculo, 2 dormideros nocturnos y 3 dormideros estivales de uso indeterminado. La riqueza observada de artrópodos oscilo entre 1-14 morfoespecies y la riqueza combi- nada para murciélagos y fauna vario entre 1-3 morfoespecies. Durante este trabajo, no fueron encontrados artrópodos troglomorficos. En las cavernas muestreadas, se desconoce si la falta de taxones adaptados a las cavernas es debido a (i) el bajo aporte de nutrientes y la alta cripto-aridez asociada generalmente con los sistemas de cavernas del suroeste, o (ii) el insuficiente muestreo. A pesar de ello, 5 de las 7 cavernas inventariadas son consideradas como de alto interés de gestión. Investigaciones adicionales en estas cavernas serán necesarios para obtener los datos requeridos para una mejor gestión y protección de estos sistemas. Open Access - Permission by Publisher See Extended description for more information.

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