Distribuição geográfica e análise morfológica de Artibeus lituratus Olfers e de Artibeus fimbriatus Gray (Chiroptera, Phyllostomidae) no Rio Grande do Sul, Brasil

Abstract

ABSTRACT. Geographica l d istribution and morphological analysis of Artibeus lituratusOlfers andArtibeusfimbriatusGray (Chiroptera, Phyllostom idae) in Rio Grande do Sul, Brazil. A study has been made on the geographical distribution and comparative externa I and cranial morphological analysis ofArlibeus liluratus Olfers, 1818 and Artibeusfimbrialus Gray, 1838 (Chiroptera, Phyllostomidae) in the state of Rio Grande do Sul, Brazil. A. liluralus and A. jill1brialus were found to be sympatric in the state n0l1h to the " Planície Costeira", in the "Depressão Central", in the hillsides of "Serra Geral", and in the northern region ofthe state, areas previously covered by forests . The southernmost point for Artibeus Leach, 1821 distribution is 30° South, and A. liluratus and A. jimbriallls are the two species found more to the south. The two species studied do not show sexual dimorphism as to exte1l1al characteristics. Cranial measurements revealed significant differences between males and fema les of A. liluralus in mandible length, which was significantly 1arger in females(p <5%), and between males and females of A.jimbrialus, in the length ofthe set oflower teeth and in the externa1 width between the cingula of canine teeth, which were significantly larger in males (p<5%). No further morphological cranial differences were found between genders of both species. A. liluralus and A. jimbrialus can be externally distinguished by size, for A. liluralus is larger than A. jimbrialus as concerns ali external dimensions ana!ysed except for the tibia length (p<5%). The two species can also be differentiated by pelage colour, hair length, and facial stripes appearance. ln the skull, a number of difterences were found in rostrum format, in the deveJopmental degree ofsupraorbital and post-orbita! crests and pre-orbita! and post-orbital processes, and in severa! cranial dimensions analysed. KEY WORDS. Phyllostomidae, Arlibeus liluralus, Arlibeus jimbriatus, distribution, morphology, South Brazil Os morcegos do gênero Artibells Leach, 1821 (Phyllostomidae, Stenodermatinae) distribuem-se desde o México até o norte da Argentina e sul do Brasil

Morcegos (Mammalia, Chiroptera) em restinga no município de Jaguaruna, sul de Santa Catarina, Brasil

“…Os morcegos capturados foram identificados conforme preposições de Vizotto e Taddei (1973), Taddei et al (1998), Rui et al (1999) …”

Quirópteros da Reserva Biológica do Tinguá, estado do Rio de Janeiro, sudeste do Brasil (Mammalia: Chiroptera)

“…As medidas de machos e de fêmeas são tratadas separadamente em atenção às recomendações de TADDEI et al (1998). Artibeus fimbriatus é uma espécie de grande porte, facilmente confundida com A. lituratus, apresentando medidas externas e cranianas sobrepostas (HANDLEY 1989, TADDEI et al 1998, RUI et al 1999, DIAS et al 2002. Isso foi verdadeiro para os espécimes da Reserva (Tab.…”

“…TADDEI 1979, WILLIG 1983, RUI et al 1999, DIAS et al 2002. Os valores citados por DIAS et al (2002) para largura pós-orbitária em espécimes de A. lituratus (7,00 a 8,00 mm nos machos e 6,60 a 8,00 mm nas fêmeas) do Parque Estadual da Pedra Branca (PEPB) estão incorretos.…”

Reproductive biology of Artibeus fimbriatus Gray 1838 (Chiroptera) at the southern limit of its geographic range

“…Therefore, variations Biota Neotrop., 16(4): e20160231, 2016 http://www.scielo.br/bn http://dx.doi.org/10.1590/1676-0611- BN-2016-0231 in rainfall in the Neotropics affect food availability, directly interfering with the reproductive cycles of the bats over their distribution area and consequently, sub-populations may exhibit different reproductive patterns (Crichton & Krutzsch 2000). Artibeus fimbriatus Gray 1838 is a Phyllostomidae bat with a wide geographic distribution, found in east Paraguay, Northwest Argentina and in Brazil, from Bahia to Rio Grande do Sul (Rui & Fabián 1999). Although most studies that have investigated tropical species generally focus on aspects of female reproduction (Beguelini et al 2013b), the reproductive biology of A. fimbriatus is poorly studied and is only known in a region in southeastern of Brazil (Ésberard et al 1998).…”