Two new species of Vitalius (Araneae: Theraphosidae) from the restingas of the states of Rio de Janeiro, Bahia and Sergipe, Brazil

IF 0.7 4区生物学 Q4 ZOOLOGY Zoologia Pub Date : 2023-01-01 DOI:10.1590/s1984-4689.v40.e23001

Rogério Bertani

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Abstract

Brazil is the country with the most diverse tarantula (Theraphosidae) fauna, having 215 described species. Vitalius Lucas, Silva Júnior & Bertani, 1993 is one of the most diverse and common genera in Southern, Southeastern and Central-West regions of Brazil with ten described species. Individuals of Vitalius species are large and widespread in areas of the Brazilian Atlantic Forest. A single species is known to occur in areas of Cerrado vegetation. Herein, two new species are described from areas of restinga, coastal areas typically with low vegetation and sandy soil, in the coast of the states of Rio de Janeiro (Vitalius restinga sp. nov.), Bahia and Sergipe (Vitalius sapiranga sp. nov.). Males and females of these two new species have a much longer than wide sternum. Males have a short apical keel in the male palpal bulb. The two species can be distinguished by embolus width, slender in V. restinga sp. nov. and thicker in V. sapiranga sp. nov. Females can be distinguished by the spermathecae shape, slender in V. restinga sp. nov. and broader in V. sapiranga sp. nov. These are the first known theraphosids endemic to Brazilian Atlantic Coast restingas. Biological data indicate V. sapiranga sp. nov. and maybe V. restinga sp. nov. commonly use bromeliads as retreats. It is herein hypothesized they are sister species occupying similar habitats in Brazilian coast, but separated by ca. 1,000 kilometers.

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标题巴西里约热内卢、巴伊亚州和塞尔希佩州栖地维塔利亚属二新种(蜘蛛目:龙蝇科)

巴西是狼蛛(狼蛛科)动物群最多样化的国家，有215种已描述的物种。Vitalius Lucas, Silva Júnior & Bertani, 1993是巴西南部、东南部和中西部地区最多样化和最常见的属之一，有10个已描述的物种。在巴西大西洋森林地区，维塔利亚种的个体庞大而广泛。已知只有一种出现在塞拉多植被区。本文从里约热内卢州(Vitalius restinga sp. 11 .)、巴伊亚州和塞尔吉佩州(Vitalius sapiranga sp. 11 .)沿海低植被和沙质土壤的restinga地区描述了两个新种。这两个新物种的雄性和雌性都有比宽长的胸骨。雄性在雄性掌球上有一个短的顶端龙骨。从栓子的宽度可以区分出这两个物种，11月的栓子较细，11月的栓子较粗，11月的栓子较细，11月的栓子较宽，这是已知的巴西大西洋沿岸栓子特有的第一种栓子。生物学资料表明，沙氏弧菌(V. sapiranga sp. 11 .)和可能的restinga sp. 11 .通常利用凤梨作为退居地。这里假设它们是姐妹物种，在巴西海岸居住着相似的栖息地，但相隔约1000公里。

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Zoologia 生物-动物学

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期刊介绍： Zoologia, the scientific journal of the Sociedade Brasileira de Zoologia (SBZ), is an international peer-reviewed, open-access Zoological journal that publishes original research on systematics, evolution, taxonomy, nomenclature, biogeography, morphology, physiology, biology, ecology, symbiosis, conservation, behavior, genetics and allied fields. The journal, formerly known as Revista Brasileira de Zoologia, publishes original articles authored by both members and non-members of the Society. The manuscripts should be written exclusively in English.