Neotropical Entomology 37(5): 591-596 (2008) Prostigmata and Mesostigmata Mites Associated to Litter from the University Park UCLA, Lara State, VenezuelaABSTRACT -Richness and abundance of Prostigmata and Mesostigmata mites inhabiting litter from a gallery forest in the university park at the Universidad Centroccidental Lisandro Alvarado (UCLA), Lara State, Venezuela were studied. Mites were captured using a pitfall trap along an 1800 m-transect from November 2000 to December 2001. Higher richness and abundance were registered for Prostigmata with 18 genera in eight families. In Mesostigmata, 11 genera included in six families were found. Of the 2085 Prostigmatan mites collected, 69.6% belonged to the Eupodidae genera Eupodes and Linopodes. Of the 398 Mesostigmata collected, 40.7% belonged to the Laelapidae; four genera of this family were found, being Hypoaspis and Cosmolaelaps the most abundant, with 28.6 and 8.0% of the Mesostigmata collected, respectively. Further studies, including Cryptostigmata, are required to improve the knowledge about the acarofauna diversity of soil-litter strata of the study area.KEY WORDS: Eupodes, Linopodes, Hypoaspis, Cosmolaelaps, richness, abundance RESUMEN -Se estudió la riqueza y abundancia de los géneros de ácaros Prostigmata y Mesostigmata habitantes de la hojarasca en un bosque de galería del Parque Universitario de la Universidad Centroccidental Lisandro Alvarado (UCLA), Estado Lara, Venezuela. Las capturas fueron realizadas utilizando trampas de caída ubicadas a lo largo de una transecta de 1800 m de longitud desde noviembre 2000 hasta diciembre 2001. La mayor riqueza y abundancia fueron registradas en el Orden Prostigmata con 18 géneros en ocho familias, mientras que en el Orden Mesostigmata se encontraron 11 géneros incluidos en seis familias. Del total de ácaros Prostigmata (2085), Eupodidae estuvo representada por los géneros Eupodes y Linopodes, que explicaron el 69,6% de la abundancia en la hojarasca. Para los Mesostigmata (398 individuos), Laelapidae fue la más abundante (40,7%) y de mayor riqueza con cuatro géneros encontrados, de los cuales Hypoaspis y Cosmolaelaps resultaron los más abundantes 28,6% y 8%, respectivamente. Se requiere más investigación para incluir a los Cryptostigmata y completar la información sobre la diversidad de la acarofauna del estrato suelo-hojarasca del Parque Universitario.
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