Dicranocentrus Schött is the most diverse and widespread taxon of Neotropical Orchesellidae. In Brazil, the genus is represented by 11 species found in humid forested areas of Atlantic and Amazon forests domains. Here we describe in detail Dicranocentrus abestado sp. nov. from Chapada Diamantina, Caatinga domain, Brazil. The new species belongs to the marias group sensu Mari-Mutt, due to the absence of most posterior macrochaetae on the dorsal head, and resembles other Neotropical species with 3, 2 and 2 central macrochaetae on abdominal segments I–III. However, the new species is unique especially by its reduced colour pattern combined with its empodial complex morphology. We compare Dicranocentrus abestado sp. nov. with 27 other taxa from the New and Old World, including all species with 3 macrochaetae on the first abdominal segment; provide notes and details on the morphology of the compared species plus identification keys to Brazilian and all species of the genus with similar abdominal chaetotaxy. We also discuss the current taxonomical knowledge on Brazilian Dicranocentrus and provide notes on its chaetotaxy and Heteromurinae systematics.

中文翻译：

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巴西DicranocentrusSchött（Collembola，Orchesellidae，Heteromurini）的调查，包括新物种的描述和属的注释

DicranocentrusSchött是新热带乐团的最广泛和最广泛的分类群。在巴西，该属由在大西洋和亚马逊森林地区的潮湿林区中发现的11种物种代表。在这里，我们详细描述Dicranocentrus abestado sp。十一月 来自巴西Caatinga地区的Chapada Diamantina。新的物种属于马里亚斯组意义上马里Mutt中，由于不存在上背头最后macrochaetae的，并且类似于其他新热带物种与3,2和2上腹节I-III中央macrochaetae。但是，新物种尤其独特，尤其是其颜色图案减少以及临时复杂的形态。我们比较Dicranocentrus abestadosp。十一月 以及来自新世界和旧世界的其他27个分类单元，包括在第一个腹节上具有3个大型目的所有物种；提供有关所比较物种形态的注释和详细信息，以及巴西和所有具有相似腹部遗传学特征的所有物种的识别码。我们还将讨论有关巴西龙虾的当前生物分类学知识，并提供有关其动物分类学和异翅类系统学的注释。