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sources for Quiscalus mexicanus and Cyanocorax sanblasianus in Chamela, Jalisco coast, Mexico. Acta Zoologica Mexicana (n. s.), 25(2): 427-430. ABSTRACT. Information over the feeding habits of neotropical birds have been relatively few documented, this is the first report in Mexico over the depredation of the mole crabs (Emerita spp.) by the Great-tailed Grackle (Quiscalus mexicanus) and for Ruddy-ground Dove (Columbina talpacoti) by San Blas Jay (Cyanocorax sanblasianus), in the coast of Chamela, Jalisco, Mexico.

ResumenEl registro de murciélagos con coloración atípica se ha incrementado en los últimos años, y la terminología que se emplea para reconocer los fenotipos es confusa. Los objetivos del presente trabajo fueron: recopilar, clasificar y catalogar los casos de fenotipos atípicos para Norte y Centroamérica e islas del Caribe entre 1930 y 2014, y documentar 9 casos adicionales para México y Costa Rica. Todos los registros sumaron 317 casos de 25 especies, 17 géneros y 4 familias, provenientes de 6 países. Los ejemplares se agruparon en 4 categorías fenotípicas; la más común fue manchas blancas, con 274 registros, seguida de albino con 23, no agouti con 11 y descolorido con 4; además, 5 ejemplares tuvieron un fenotipo combinado. Los casos adicionales para México corresponden a 5 Artibeus lituratus, un Glossophaga soricina y el primer registro de Sturnira parvidens y de Nyctinomops femorosaccus. También se documentó el segundo caso para Costa Rica, Molossus sinaloae. Se desconocen las causas de la coloración atípica en los murciélagos. Se requiere de estudios genéticos y moleculares para entender su origen y el posible impacto en las poblaciones de murciélagos.AbstractThe recording of bats with atypical coloration has been increased in the last years, and the terminology to recognize the phenotypes is confusing. The objectives of this work were: to compile, classify, and catalogue the cases of atypical phenotypes in North and Central America and the Caribbean islands between 1930 and 2014, and to report 9 additional cases in Mexico and Costa Rica. We obtained 317 cases, representing 25 species, 17 genera, and 4 families from 6 countries. The specimens were classified in 4 phenotypic categories; the most common was white spotting with 274 records, followed by albino with 23, non agouti with 11, and colorless with 4; 5 specimens had a combined phenotype. The additional cases for Mexico were 5 Artibeus lituratus, one Glossophaga soricina, and the first records for Sturnira parvidens and Nyctinomops femorosaccus. We documented the second record from Costa Rica, Molossus sinaloae. The causes and consequences of this phenomenon in bats remain unknown. Genetic and molecular studies are necessaries to understand its origin and possible impacts in bat populations.

Information on geographic distribution, habitat, measurements, and reproductive condition of five species of mammals from Guerrero, Mexico, is provided. Two species are new records for the State (Nyctinomops femorosaccus and Sigmodon leucotis), one is the second record (Spermophilus variegatus variegatus), one is the third record (Nyctinomops macrotis), and one is the fourth record (Herpailurus yagouaroundi tolteca).

Lynx rufus, Puma concolor, Puma yagouaroundi, Leopardus pardalis, Leopardus wiedii, Panthera onca, distribución.

ResumenSe amplía la información sobre distribución, hábitat y medidas somáticas y craneales de las 6 especies de felinos que se distribuyen en nuestro país y que se encuentran en Guerrero. La presencia de estas especies se obtuvo a través de métodos directos y registros indirectos. Lynx rufus está representado por la piel y el cráneo de un joven y es el segundo registro para el estado; mientras que Puma concolor, Puma yagouaroundi, Leopardus pardalis, Leopardus wiedii y Panthera onca incrementan su área de distribución en el estado. Las principales amenazas para estos felinos son la fragmentación del hábitat y la cacería furtiva.AbstractInformation on distribution, habitat and measurements of the 6 species of cats found in Mexico and in Guerrero is provided. The specimens were recorded through direct and indirect methods. Lynx rufus is represented by the skin and skull of a young specimen and it is the second record for the state, while Puma concolor, Puma yagouaroundi, Leopardus pardalis, Leopardus wiedii and Panthera onca increase its distribution range in the state. The main threats to cats are habitat fragmentation and poaching.

Se reportan ácaros ectoparásitos en roedores colectados durante un estudio ecológico en Playa de Oro, en el estado de Colima, México. Los roedores revisados fueron: Heteromys pictus, Heteromys spectabilis, Baiomys musculus, Nyctomys sumichrasti, Oryzomys couesi, Oryzomys melanotis, Osgoodomys banderanus, Reithrodontomys fulvescens y Sigmodon mascotensis. Se registra la presencia de varias especies de ácaros de las familias Laelapidae, Macronyssidae, Listrophoridae y Myocoptidae en nuevos huéspedes y de algunas más se amplía su distribución. Se registra por primera vez para México a Lepidoglyphus hylandi, Laelaps oryzomydis y Prolistrophorus bakeri.

Se aporta información sobre la distribución, hábitat, medidas y condición reproductiva de nueve especies de murciélagos del estado de Guerrero, México. Cuatro especies representan el segundo registro para el estado (Choeroniscus godmani, Myotis auriculus apache, Myotis thysanodes aztecus y Nyctinomops femorosaccus), tres representan el tercer registro (Musonycteris harrisoni, Chiroderma salvini scopaeum y Enchisthenes hartii), y dos son el cuarto registro (Hylonycteris underwoodi minor y Myotis californicus mexicanus).

The mammals from four areas of Southeastern Mexico were examined to compare the species diversity in areas characterized by various degrees of disturbance caused by human activities such as felling of trees, cattle grazing, and agriculture. We examined 458 specimens from 52 species in the four study areas. Carlos A. Madrazo was the site with more species richness (n= 41) and also has the less disturbed vegetation, followed by Agua Dulce (n= 37) that presents some orchards that had changed the natural vegetation, and Jalapita (n= 28) and El Espino (n= 14), the areas with the most alteration in their vegetation. The differences found in the distribution of the species in the four areas indicate that most species prefer to inhabit the less disturbed areas with favorable conditions for their survival, suggesting that disturbance reduced the number of species in the studied zones. In Southeastern Mexico, Tabasco and Veracruz are among the states with the most disturbed areas in which the original vegetation has been substituted by grass. It is imperative that the authorities responsible for the conservation of species and use of the land implement a plan to educate local people on the sustainable use of natural resources so their protection and management can be achieved.