首页> 美国卫生研究院文献>ZooKeys >Life beneath the surface of the central Texan Balcones Escarpment: genus Anillinus Casey 1918 (Coleoptera Carabidae Bembidiini): new species a key to the Texas species and notes about their way of life and evolution
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Life beneath the surface of the central Texan Balcones Escarpment: genus Anillinus Casey 1918 (Coleoptera Carabidae Bembidiini): new species a key to the Texas species and notes about their way of life and evolution

机译:德克萨斯中央阳台悬崖表面以下的生活:Anillinus Casey属1918年(鞘翅目腕足科本比迪尼):新物种德克萨斯州物种的关键并记录了它们的生活方式和进化

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摘要

The Texas fauna of the genus Anillinus Casey, 1918 includes three previously described species (A. affabilis (Brues), 1902, A. depressus (Jeannel), 1963 and A. sinuatus (Jeannel), 1963) and four new species here described: A. acutipennis Sokolov & Reddell, >sp. n. (type locality: Fort Hood area, Bell County, Texas); A. comalensis Sokolov & Kavanaugh, >sp. n. (type locality: 7 miles W of New Braunfels, Comal County, Texas); A. forthoodensis Sokolov & Reddell, >sp. n. (type locality: Fort Hood area, Bell County, Texas); A. wisemanensis Sokolov & Kavanaugh, >sp. n. (type locality: Wiseman Sink, Hays County, Texas). A key for identification of adults of these species is provided. The fauna includes both soil- and cave-inhabiting species restricted to the Balcones Fault Zone and Lampasas Cut Plain and adjacent areas underlain by the Edwards-Trinity Aquifer. Based on morphological and distributional data, we hypothesize that four lineages of endogean Anillinus species extended their geographical ranges from a source area in the Ouachita-Ozark Mountains to the Balconian region in central Texas. There the cavernous Edwards-Trinity aquifer system provided an excellent refugium as the regional climate in the late Tertiary and early Quaternary became increasingly drier, rendering life at the surface nearly impossible for small, litter-inhabiting arthropods. Isolated within the Edwards-Trinity aquifer system, these anilline lineages subsequently differentiated, accounting for the currently known diversity. The paucity of specimens and difficulty in collecting them suggest that additional undiscovered species remain to be found in the region.
机译:1918年的Anillinus Casey属的得克萨斯州动物区系包括三个先前描述的物种(A. affabilis(Brues),1902年,A. depressus(Jeannel),1963年和A. sinuatus(Jeannel),1963年),这里描述了四个新物种: A. acutipennis Sokolov和Reddell,> sp。 (类型类型:得克萨斯州贝尔县,胡德堡地区); A. comalensis Sokolov&Kavanaugh,> sp。 n。(类型区域:德克萨斯州科默县New Braunfels西部7英里); A. forthoodensis Sokolov&Reddell,> sp。 (类型类型:得克萨斯州贝尔县,胡德堡地区); A. wisemanensis Sokolov&Kavanaugh,> sp。 n。(类型为:Wiseman Sink,得克萨斯州海斯县)。提供了用于识别这些物种的成年动物的钥匙。动物区系包括土壤和洞穴栖息物种,它们仅限于Balcones断层带和Lampasas Cut平原以及Edwards-Trinity含水层之下的邻近区域。根据形态学和分布数据,我们假设四种内生Anillinus物种谱系将其地理范围从Ouachita-Ozark山脉的源区扩展到Texas中部的Balconian地区。随着第三纪晚期和第四纪早期的区域气候变得越来越干燥,海绵状的Edwards-Trinity蓄水层系统提供了一个很好的避难所,这使得小型的,有猫脚的节肢动物几乎无法生存在地表。隔离在Edwards-Trinity含水层系统中的这些苯系沿袭而分化,这说明了目前已知的多样性。标本稀少且收集困难,这表明该地区仍有待发现的其他物种。

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