Currently, the study of guard hairs is used in various areas of basic and applied sciences (taxonomy, ecology, genetics, paleontology, criminology, among others), due to its resistance to physical, chemical, mechanical and biological factors, conserving its cuticular and medullar structure. These structures form patterns that allow the identification of specimens at the level of genera and families. However, despite the importance, there are no studies on this subject in Peru. Therefore, samples from 30 mammalian species of Didelphimorphia and Rodentia were examined to fill this information gap. Among the species studied, we differentiated 5 medullary and 8 cuticular patterns. The didelphid marsupials have a medial uniseriate scaleriform pattern with a foliaceous cuticular pattern; the cricetid rodents have an alveolar multiseriate medullary pattern and a foliate cuticular pattern, the c...

            The present study aimed to describe the cuticular microstructure of the guard hairs of bats present in the coastal desert of southern Peru. Samples of 45 bat specimens (16 species, 13 genera and 4 families) from the department of Arequipa were examined, which were part of the scientific collection of mammals of the Natural History Museum of the National University of San Agustín de Arequipa (MUSA). Hairs were obtained from the inter-scapular area, which were observed in a Scanning Electron Microscope to obtain morphological and morphometric data. Five types of coronal cuticular patterns (appressed, divergent, divaricated, alternate and unequal hastate) and six configurations of the edge of the scales (simple, cleft, emarginate, serrated, denticulate and dentate) were recorded, allowing the specimens to be differentiated down to the level of subfamily, while with t...

Currently, the study of guard hairs is used in various areas of basic and applied sciences (taxonomy, ecology, genetics, paleontology, criminology, among others), due to its resistance to physical, chemical, mechanical and biological factors, conserving its cuticular and medullar structure. These structures form patterns that allow the identification of specimens at the level of genera and families. However, despite the importance, there are no studies on this subject in Peru. Therefore, samples from 30 mammalian species of Didelphimorphia and Rodentia were examined to fill this information gap. Among the species studied, we differentiated 5 medullary and 8 cuticular patterns. The didelphid marsupials have a medial uniseriate scaleriform pattern with a foliaceous cuticular pattern; the cricetid rodents have an alveolar multiseriate medullary pattern and a foliate cuticular pattern, the c...

This study documents the small mammalian diversity in the Zona Reservada Sierra del Divisor (ZRSD). Six sites were evaluated between 2011 and 2013 with capture techniques (Victor snap traps, Tomahawk traps, Pitfall traps and mist nets). 67 species of small mammals were recorded (five marsupials, 10 rodents and 52 bats), 32 of which are new records for the ZRSD and two are species of the most rare and endemic rodents of Peru, the “Peruvian Aquatic Rat” Neusticomys peruviensis (Cricetidae: Ichthyomyini) and “Ucayali´s Aquatic Mouse” Amphinectomys savamis (Cricetidae: Oryzomyini). On the other hand, the marsupial Marmosops bishopi; rodents Neacomys minutus, Euryoryzomys macconnelli, Scolomys melanops and Proechimys kulinae; and the bats Artibeus planirostris and Rhinophylla pumilio were the most plenty. Our finding showed the importance of the re-categorization of Reserved Zone to ...

The White-cheeked Cotinga Zaratornis stresemanni (Koepcke, 1954) (Birds: Cotingidae) is an endemic bird of Peru, specialist of Polylepis forests. Is currently threatened by habitat loss and degradation. In this note, we document records to the northwest of Arequipa department, in southern Peru. These records extend in at least 130 km the austral distribution range and correspond to the first documented records of the species for Arequipa department. We suggest that the White-cheeked Cotinga would be resident in the Polylepis forests in northwest Arequipa.

A preliminary list and diagnosis of the Arctiinae species of Arequipa is presented. It is proposed that Amastus pallescens is a new synonym of Amastus cellularis. The female of A. cellularis is reported for the first time. The Magnoptera watsoni species was revalidated, which was synonimized a few years ago with Amastus walkeri. It was collected during 2017-2018, in 16 evaluation stations that included 4 altitudinal ranges: 0-1500, 1500-2500, 2500-3500, 3500-4500 m.

En el presente trabajo se documenta la diversidad de mamíferos pequeños en la Zona Reservada Sierra del Divisor (ZRSD). Se evaluaron seis localidades entre 2011 y 2013 utilizando técnicas de captura estándar (trampas Víctor, Tomahawk, Pitfall y redes de niebla). Se registró un total de 67 especies (cinco marsupiales, 10 roedores y 52 murciélagos), 32 de las cuales son nuevos registros para la ZRSD y dos son especies de roedores raras y endémicas del Perú, la “rata acuática peruana” Neusticomys peruviensis (Cricetidae: Ichthyomyini) y el “Ratón acuático de Ucayali” Amphinectomys savamis (Cricetidae: Oryzomyini). El marsupial Marmosops bishopi; los roedores Neacomys minutus, Euryoryzomys macconnelli, Scolomys melanops y Proechimys kulinae; y los murciélagos Artibeus planirostris y Rhinophylla pumilio fueron las especies más abundantes. Nuestros hallazgos demuestran la...

La cotinga cariblanca Zaratornis stresemanni (Koepcke, 1954) (Aves: Cotingidae) es un ave endémica del Perú especialista de bosques de Polylepis. Actualmente se encuentra amenazada por la pérdida y degradación de su hábitat. En esta nota reportamos dos registros documentados al noroeste del departamento de Arequipa, en el sur de Perú, los cuales amplían en al menos 130 km su rango de distribución austral y corresponden a los primeros registros documentados de la especie para el departamento de Arequipa. Se sugiere que la cotinga cariblanca residiría en los bosques de Polylepis en el noroeste de Arequipa.

A preliminary list and diagnosis of the Arctiinae species of Arequipa is presented. It is proposed that Amastus pallescens is a new synonym of Amastus cellularis. The female of A. cellularis is reported for the first time. The Magnoptera watsoni species was revalidated, which was synonimized a few years ago with Amastus walkeri. It was collected during 2017-2018, in 16 evaluation stations that included 4 altitudinal ranges: 0-1500, 1500-2500, 2500-3500, 3500-4500 m.

Chilomys instans (Thomasomyini, Cricetidae) is a common species in the mammalian fauna that inhabits in the Northern Andes of South America. Here we present the first record of that in Peru, based on the morphologic review of three samples collected in Cajamarca Department (Central Andes). Information about the taxonomic and natural history of C. instans are presented. The wide distribution of genus Chilomys in Andes shows the necessity to perform a taxonomic review of the genus, in order to clearify the species limit.

We presented the first record of three species bats for Peru based on specimens collected between 2007 and 2014. These are Eumops glaucinus, captured in the rainforest from the center of Peru, Molossus bondae captured in the Pacifico rainforest, and Promops nasutus, captured in the montane forests from southeastern. The new records increase the mammal diversity of Peru to 579 species.

El roedor Chilomys instans (Thomasomyini, Cricetidae) es una especie común en la comunidad de mamíferos que habita los Andes del Norte en Sudamérica. Aquí presentamos el primer registro de la especie para el Perú, en base a la revisión morfológica de tres ejemplares colectados en el departamento de Cajamarca (Andes del Centro). Se presentan comentarios sobre la taxonomía de C. instans e información sobre su historia natural. La amplia distribución del género Chilomys en los Andes pone de manifiesto la necesidad de realizar la revisión taxonómica de éste género para esclarecer los límites de las especies que la conforman.