FOUR NEW ADDITIONS TO THE ARANEOFAUNA OF GUANAJUATO STATE, MEXICO

摘要

The state of Guanajuato is located in central México at the intersection of three biogeographic provinces: the Sierra Madre Oriental, the Mexican Plateau, and the Trans-Mexican Volcanic Belt (INEGI 2010). Within the state of Guanajuato there are diverse array of vegetation types ranging from scrub and grasslands in the north and northwest arid regions, temperate forests in the mountain ranges, to tropical deciduous forest and subtropical scrub in the southern lowlands (Rzedowski 2006). The araneofauna of Guanajuato has never been systematically sampled and remains poorly known. Data on the state's spider fauna are scarce, mainly included in broad taxonomic revisions, as those for the taxa cited here (Reiskind 1969; Levi 1968,2004; Crews 2011) or aspart of spider behavior notes (Uetz 1985; Tietjen 1986). Previous compilations of the araneofauna of Guanajuato appear in Hoffman (1976) and Jiménez (1996), accounting for 34 species. Recently Lucio-Palacio et al. (in press) updated the checklist of spiders to 46 species. Here we present data belonging to four new spider state records found during biological surveys performed between years 2009 and 2010 in southern Guanajuato. We additionally actualize the number of spider soecies in the state from 46 to 50.