Acciavatti Robert E
Research Associate, Section of Invertebrate Zoology, The Carnegie Museum of Natural History, 4400 Forbes Avenue, Pittsburgh, Pennsylvania 15213-4080, USA.
Zookeys. 2011(147):99-182. doi: 10.3897/zookeys.147.2012. Epub 2011 Nov 16.
The Brasiella tiger beetle fauna on Hispaniola, the second largest island of the Greater Antilles, has more species diversity than currently recognized as all populations previously have been assigned to the insular endemic Brasiella dominicana (Mandl). A comparative study of adult morphology, particularly male genitalic and female abdominal characters, for available Brasiella specimens from populations on Hispaniola, proposes eight additional new species also endemic to this island. Except for three sympatric species in the Sierra de Baoruco in southern Dominican Republic occurring in different habitats, all the Brasiella on Hispaniola appear to be allopatric. Most species occur in the major mountainous regions of Hispaniola. Two species, however, are known only from river floodplains in the southern coastal plain of the Dominican Republic. Brasiella dominicana (Mandl) and Brasiella ocoa, new species, occur along river floodplains emanating from the eastern end of the Cordillera Central in the Dominican Republic. Two new Brasiella species, Brasiella bellorum, and Brasiella philipi, occur in the Cordillera Central, Dominican Republic, the former species from central portions, and the latter species from north slopes of this mountain range, respectively. Three new Brasiella species, Brasiella rawlinsi, Brasiella iviei, and Brasiella youngi, are isolated in the Sierra de Baoruco, Dominican Republic, where each occupies a different habitat along an altitudinal gradient. The two new Brasiella species in Haiti are Brasiella darlingtoniana, in the Massif de la Selle, and Brasiella davidsoni, in the Massif de la Hotte. All nine Brasiella species on Hispaniola, along with Brasiella viridicollis (Dejean) and its two subspecies on Cuba, belong to the viridicollis species group of the genus Brasiella based on criteria presented in earlier published phylogenetic studies of Brazilian and West Indian tiger beetles. The subspecies Brasiella viridicollis fernandozayasi (Kippenhan, Ivie and Hopp) may represent a distinct species within this species group, whereas removal of Brasiella wickhami (W. Horn) from this species group seems warranted based on evidence presented. A general overview of species relationships for the Brasiella on Hispaniola are discussed, along with the current and ancestral geographic distributions of the Brasiella viridicollis species group in the West Indies.
伊斯帕尼奥拉岛是大安的列斯群岛的第二大岛，岛上的布拉西埃拉虎甲动物群的物种多样性比目前公认的要高，因为此前所有种群都被归为岛屿特有种多米尼加布拉西埃拉（曼德尔）。对伊斯帕尼奥拉岛种群中现有的布拉西埃拉标本进行的成虫形态比较研究，特别是雄性生殖器和雌性腹部特征的研究，发现了另外八个同样为该岛特有的新物种。除了多米尼加共和国南部包鲁科山脉中三种同域分布的物种出现在不同栖息地外，伊斯帕尼奥拉岛上所有的布拉西埃拉似乎都是异域分布的。大多数物种分布在伊斯帕尼奥拉岛的主要山区。然而，有两个物种仅在多米尼加共和国南部沿海平原的河漫滩被发现。多米尼加布拉西埃拉（曼德尔）和新物种奥科阿布拉西埃拉出现在多米尼加共和国中科迪勒拉山脉东端流出的河漫滩。两个新的布拉西埃拉物种，贝洛鲁姆布拉西埃拉和菲利普布拉西埃拉出现在多米尼加共和国的中科迪勒拉山脉，前者来自中部地区，后者分别来自该山脉的北坡。三个新的布拉西埃拉物种，罗林斯布拉西埃拉、艾维布拉西埃拉和扬吉布拉西埃拉，孤立地分布在多米尼加共和国的包鲁科山脉，它们各自沿着海拔梯度占据不同的栖息地。海地的两个新布拉西埃拉物种是位于塞勒山的达林顿布拉西埃拉和位于奥特山的戴维森布拉西埃拉。根据早期发表的关于巴西和西印度虎甲的系统发育研究中提出的标准，伊斯帕尼奥拉岛上的所有九个布拉西埃拉物种，以及古巴的绿颈布拉西埃拉（德让）及其两个亚种，都属于布拉西埃拉属的绿颈物种组。绿颈布拉西埃拉费尔南多扎亚西亚种（基彭汉、艾维和霍普）可能代表该物种组内的一个独特物种，而根据现有证据，将威克汉姆布拉西埃拉（W. 霍恩）从这个物种组中移除似乎是合理的。本文讨论了伊斯帕尼奥拉岛上布拉西埃拉物种关系的总体概况，以及西印度群岛绿颈布拉西埃拉物种组的当前和祖先地理分布。
