Phylogenetic systematics of the gondwanan Empis macrorrhyncha group (Diptera, Empididae, Empidinae)
Phylogenetic systematics of the gondwanan Empis macrorrhyncha group (Diptera, Empididae, Empidinae)
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DOI：
10.1111/j.1365-3113.2009.00490.x
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发表时间：
2009-10-01
影响因子：
4.8
通讯作者：
Plant, Adrian R.
中科院分区：
文献类型：
--
作者：
Daugeron, Christophe;D'Haese, Cyrille A.;Plant, Adrian R.
对南美和澳大利亚冷暖温带地区的大斑潜蝇进行了分类鉴定和分支系统学分析，发现了5个新种，即大斑潜蝇Empis Animosa sp.n.、大斑潜蝇E.austera sp.n.、斑潜蝇E.maculosa sp.n.、西洋潜蝇E.ocsidentalis sp.n。和簇毛拟青霉E.pedivillosula sp.n.对该类群14种23个成虫形态性状进行了分支分析，得到了28个阶梯的单株树(CI=0.82；RI=0.93)。单子体是建立在一个单一的无性型的基础上，拥有一个双叶的男性下垂的颈椎。推测出三个主要支系：支系1包括三个巴塔哥尼亚种和一个澳大利亚西南部种；支系2包括来自澳大利亚东南部的两个种；支系3包括一个由五个种和一个澳大利亚东南部种组成的巴塔哥尼亚大类群。Fulvicollis复合体(分支1)是E.macrobrincha复合体(分支2+3)的姐妹群。提出了一个临时的历史生物地理假说，将南美和澳大利亚姐妹血统的出现与冈瓦那分裂的时间联系起来。
The Empis macrorrhyncha group (Diptera: Empididae) from cool to warm temperate areas of South America and Australia is diagnosed and cladistically analysed, and five new species, Empis animosa sp.n., E. austera sp.n., E. maculosa sp.n., E. occidentalis sp.n. and E. pedivillosula sp.n., are described. Cladistic analysis of 23 adult morphological characters for 14 species of the group generated a single tree of 28 steps (CI = 0.82; RI = 0.93). Monophyly was established on the basis of a single apomorphy, possession of a bilobed cercus of the male hypopygium. Three main clades were inferred: clade 1 included three Patagonian and a single southwestern Australian species; clade 2 included two species from southeastern Australia; clade 3 included a large Patagonian group of five species and a single southeastern Australian species. The E. fulvicollis complex (clade 1) is a sister-group of the E. macrorrhyncha complex (clades 2 + 3). A provisional historical biogeographic hypothesis is advanced correlating the appearance of the South American and Australian sister lineages with the timing of the break-up of Gondwana.