Schneider Clément, Porco David, Deharveng Louis
Institut de Systématique, Evolution, Biodiversité, ISYEB - UMR 7205 - CNRS, MNHN, UPMC, EPHE, Museum national d'Histoire naturelle, Sorbonne Universités, 45 rue Buffon, CP50, F-75005 Paris, France.
Université de Rouen, Laboratoire ECODIV, Bâtiment IRESE A, Place Emile Blondel, 76821 Mont Saint Aignan Cedex, France.
Zookeys. 2016 Jan 18(554):37-68. doi: 10.3897/zookeys.554.6069. eCollection 2016.
Two new Megalothorax species, Megalothorax potapovi sp. n. from the Russian Far East and Megalothorax sanguineus sp. n. from the French Pyrénées are described. The two new species have a set of morphological characters (including a smooth mucro) that places them among the minimus group sensu Schneider and D'Haese (2013). Megalothorax potapovi characteristics include dorsal protuberance on forehead, peculiar chaetotaxy of antenna III and strong lanceolate chaetae on body. Megalothorax sanguineus characteristics include strong red pigmentation, large network of integumentary channels on head and elongated apex of the two postero-distal spines of dens. The DNA barcodes (cytochrome oxidase subunit I-COI) of the two species are also provided and analyzed among a broader sampling of the genus in order to support further their specific status. A special focus is given to the labral morphological characteristics. Pseudopores-like elements are reported for the first time in the genus. Positions of the τ-chaetae near the dorsal sensory field of thorax II are compared for several species of the genus.
描述了两种新的巨胸甲物种,即来自俄罗斯远东地区的波塔波夫巨胸甲(Megalothorax potapovi sp. n.)和来自法国比利牛斯山脉的血红巨胸甲(Megalothorax sanguineus sp. n.)。这两个新物种具有一系列形态特征(包括光滑的端刺),使其归入施奈德和德海斯(2013年)所定义的小胸甲类群。波塔波夫巨胸甲的特征包括额部的背侧突起、触角III独特的刚毛排列以及身体上强壮的披针形刚毛。血红巨胸甲的特征包括强烈的红色色素沉着、头部大量的体表通道网络以及齿的两个后远端刺的细长顶端。还提供了这两个物种的DNA条形码(细胞色素氧化酶亚基I-COI),并在该属更广泛的样本中进行了分析,以进一步支持它们的物种地位。特别关注唇形态特征。首次在该属中报道了类似假孔的结构。比较了该属几个物种中τ刚毛在胸部II背侧感觉场附近的位置。