Rodriguez Pilar, Fend Steven V, Lenat David R
Department of Zoology and Animal Cell Biology, Faculty of Science and Technology, University of the Basque Country, Box 644, 48080 Bilbao, Spain.
U.S. Geological Survey, 345 Middlefield Rd., Menlo Park CA 94025, USA.
Zookeys. 2014 Nov 3(451):1-32. doi: 10.3897/zookeys.451.7304. eCollection 2014.
Three new species of Lumbriculidae were collected from floodplain seeps and small streams in southeastern North America. Some of these habitats are naturally acidic. Sylphellapuccoon gen. n., sp. n. has prosoporous male ducts in X-XI, and spermathecae in XII-XIII. Muscular, spherical atrial ampullae and acuminate penial sheaths distinguish this monotypic new genus from other lumbriculid genera having similar arrangements of reproductive organs. Cookidriluspocosinus sp. n. resembles its two subterranean, Palearctic congeners in the arrangement of reproductive organs, but is easily distinguished by the position of the spermathecal pores in front of the chaetae in X-XIII. Stylodriluscoreyi sp. n. differs from congeners having simple-pointed chaetae and elongate atria primarily by the structure of the male duct and the large clusters of prostate cells. Streams and wetlands of Southeastern USA have a remarkably high diversity of endemic lumbriculids, and these poorly-known invertebrates should be considered in conservation efforts.
从北美东南部的河漫滩渗流区和小溪中采集到了颤蚓科的三个新物种。其中一些栖息地天然呈酸性。新属Sylphellapuccoon gen. n., sp. n.的雄孔位于X-XI节，受精囊位于XII-XIII节。肌肉质的球形心房壶腹和渐尖的阴茎鞘将这个单型新属与其他具有相似生殖器官排列的颤蚓科属区分开来。新种Cookidrilus pocosinus sp. n.在生殖器官排列上与其两个地下的古北区同属物种相似，但很容易通过受精囊孔在X-XIII节刚毛前方的位置来区分。新种Stylodrilus coreyi sp. n.与具有简单尖状刚毛和细长心房的同属物种的主要区别在于雄管结构和大量前列腺细胞簇。美国东南部的溪流和湿地拥有非常高的颤蚓科特有物种多样性，在保护工作中应考虑这些鲜为人知的无脊椎动物。
