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This study presents the diversity of lizard species at the Imbassaí Preserve, located in the Mata de São João municipality, on the northern coast of Bahia region, Brazil, with special attention to the threatened and endemic species. We present the main results on richness and abundance, from a long term monitoring program and especially from the period between November 2008 and June 2010. We applied the visual search method associated with pitfall traps and random encounters, on a 200m linear transect, in four different vegetation habitats. We detected 26 lizard species, distributed in 19 genera of 10 families. The study reveals a high diversity area for lizards, within the restinga ecosystem along the northern coast line, and therefore contributes to the knowledge of the herpetofauna on the northern coast of the Bahia region, as well as to future management and monitoring programs.

Abstract:Restinga is a coastal ecosystem covering almost the entire Brazilian coast line and it is associated with the Atlantic Forest biome and therefore is a complementary component of the landscape. Its vegetation is highly variable and specialized, being influenced by salt, and with low fertility and moist soil. This environmental landscape promotes the colonization of species from contiguous biomes and ecosystems, thereby promoting high diversity, especially on the northern coast of Bahia. The study was conducted at the Reserva Imbassaí, in the municipality of Mata de São João, northern coast of Bahia, Brazil. We conducted six surveys distributed over one year, with samples every two months; we used the sampling techniques of active visual search, random encounters and pitfall traps along a linear transect. Fourty-nine snakes from 15 species distributed among five families were recorded: Boidae (2), Colubridae (3), Dipsadidae (6), Elapidae (1) and Viperidae (3). Ten of the species of snakes found at Reserva Imbassaí complement the literature overall snakes' list from the north coast of Bahia's restinga. The results show that Reserva Imbassaí is uniquely rich in snakes and therefore represents an important contribution to the knowledge of this taxon within the Atlantic forest hotspot.Keywords: Atlantic forest, boids, colubrids, dipsadids, elapids, northeastern Brazil, squamata, viperids. 2184Portuguese Abstract: A restinga é um ecossistema costeiro, cobrindo grande parte da costa brasileira e é associado ao bioma da Mata Atlântica, agindo como componente complementar da paisagem. Sua vegetação é bastante variada e especializada, influenciada pela salinidade marinha e pela baixa fertilidade e umidade do solo. Estes componentes da paisagem contribuem para a colonização de espécies de outros biomas e ecossistemas próximos, tornando-o assim bastante diverso, principalmente no litoral norte da Bahia. Este estudo foi realizado na Reserva Imbassaí, localizado no município de Mata de São João, litoral norte da Bahia, Brasil. Realizamos seis coletas durante um ano a cada dois meses; utilizamos a procura visual ativa, armadilhas de interceptação e queda e encontros ocasionais em um transecto linear. Foram registradas 49 serpentes de 15 espécies das cinco famílias: Boidae (2), Colubridae (3), Dipsadidae (6), Elapidae (1) e Viperidae (3). Dez destas espécies de serpentes encontradas na Reserva Imbassaí complementam a lista de espécies deste grupo para a restinga do litoral norte da Bahia. Os resultados evidenciam que a Reserva Imbassaí possui uma riqueza única de serpentes e representa uma importante contribuição para o conhecimento deste táxon no hotspot da Mata Atlântica.

The Pituaçu Metropolitan Park (PMP) is a secondary Atlantic rainforest remnant with 425ha. New studies on ecology dynamics can help its management plan implementation and conservation. This paper analyses the border effect over the composition, diversity and richness of spider species in the PMP. The methods used were: nocturnal manual collection (CMN), and beating trays (GE). Twelve sampling units were randomly chosen (6 on the border and 6 on the interior) totalling an effort of 24 hours and 240 shrubs. Spider richness was estimated using Bootstrap, diversity using Shannon -Wiener (H). The similarity index of Jaccard was used to estimate the level of equality between the species composition in each unit. The statistical analysis were carried out using EstimateS©, Biostat 2.0© and Diversity© packages. Comparisons betwenn spider richness were made using ANOVA. A total of 948 specimens were collected. Of these, 272 were adults, belonging to 80 species and 20 families. Bootstrap estimated 32 species for GE in the center and 34 on the border. Concerning CMN, estimates were of 45 species in the center and 53 on the border, verifying that for both sampling methods there was no significant difference between the areas (ANOVA p>0,05). In relation to diversity, Shannon-Wiener index found that for both sampling methods the diversity was higher on the border than in the center. These results show that there is a significant difference between the habitats located on the border and in the center. Jaccard similarity index resulted in 32,2% for CMN and 20,9% for GE between the border and centre, indicating that there is a low level of similarity between the species composition of these areas. Among the dominant species in the center habitat, the orbweaving spiders were dominant, which was not observed on the remnant's border, where the runner spiders were dominant. The presence of a higher diversity of spider species on the border of the fragment is an unexpected result, since the majority of the studies indicate a higher diversity in the center, considering it a more preserved natural environment. Key words: Spiders, Communities studies, Atlantic Forest, Board Effect, Bahia. ResumoO trabalho foi desenvolvido no Parque Metropolitano de Pituaçu (PMP), um fragmento de Mata Atlântica secundária com 425 ha, localizado nas coordenadas geográficas 12º56'S;38º24'W. Foi analisado o efeito de borda sobre a composição, diversidade e riqueza em espécies de aranhas do PMP. Foram utilizados dois métodos: coleta manual noturna (CMN) e guarda-chuva entomológico (GE). Foram escolhidos 12 pontos arbitrariamente, seis de borda e seis de centro, totalizando 24h e 240 arbustos. A riqueza foi estimada pelo índice de Bootstrap através do software EstimateS e a diversidade pelo índice de Shannon-Wiener (H). Foi aplicado o índice de similaridade de Jaccard para estimar o grau de semelhança entre a composição de espécies dos ambientes. As análises estatísticas foram feitas a partir do software Bioestat 2.0 e Diversity©, utilizando-se para a ...

redescription and distribution of Latrodectus geometricus in Uruguay (Araneae: Theridiidae). Biota Neotrop. 13(1): http:// www.biotaneotropica.org.br/v13n1/en/abstract?short-communication+bn02813012013Abstract: This study provides the first accurate records of Latrodectus geometricus C. L. Koch, 1841 for Uruguay and extends the known distribution of this species to the Southeastern region of South America. Data and figures of the genitalic morphology for the recognition of the species and natural history in this country are indicated. In Uruguay L. geometricus was mainly restricted to urban areas at the west of this country and it is associated with locations with high human activity.