Order Rodentia - Family Echimyidae Author Wilson, Don E. Author Reeder, DeeAnn text 2005 The Johns Hopkins University Press Baltimore Mammal Species of the World: a Taxonomic and Geographic Reference (3 rd Edition), Volume 2 1575 1592 book chapter 0-8018-8221-4 10.5281/zenodo.7316535 Proechimys guairae Thomas 1901 Proechimys guairae Thomas 1901 , Proc. Biol. Soc. Wash., 14: 27 . Type Locality: Venezuela , Federal Dist., La Guaira. Vernacular Names: Guaira Spiny-rat . Synonyms: Proechimys ochraceus Osgood 1912 . Distribution: NC Venezuela , east of Lake Maracaibo and the Merida Andes. Conservation: IUCN – Lower Risk (lc). Discussion: Placed in trinitatus group by Patton (1987) . Includes ochraceus ; guairae and ochraceus were formerly included in guyannensis ( Reig et al., 1980 ) . Eisenberg (1989) included urichi within guairae . Karyotype is highly variable, 2n=44-52; FN=66-74 ( Aguilera and Corti, 1994 ; Reig, 1989 ; Reig and Useche, 1976 ). Reig et al. (1980) mentioned a closely related, undescribed species ("Barina’s") from south of the Merida Andes.