Paraense W Lobato
Departamento de Malacologia, Instituto Oswaldo Cruz, Funda o Oawaldo Cruz, Rio de Janeiro, RJ, 21045900, Brasil.
Mem Inst Oswaldo Cruz. 2003 Jan;98(1):51-67. doi: 10.1590/s0074-02762003000100008. Epub 2003 Apr 9.
In the course of two trips to Central America (June 1967 and JulyAugust 1976) I had the opportunity of collecting topotypic specimens of Planorbis nicaraguanus Morelet, 1849, anatomically defined in this paper, and of P. yzabalensis Crosse & Fischer, 1879, the identity of the latter with Drepanotrema anatinum (Orbigny, 1835) is confirmed. The following planorbid species were also found: Helisoma trivolvis (Say, 1817) in Nicaragua, Guatemala, Costa Rica and Belize; H. duryi (Wetherby, 1879) in Costa Rica; Biomphalaria helophila (Orbigny, 1835) in Guatemala, Belize, Nicaragua, Costa Rica and El Salvador; B. kuhniana (Clessin, 1883) in Panama; B. obstructa (Morelet,1849) in Guatemala, Belize and El Salvador; B. straminea (Dunker, 1848) in Costa Rica; B. subprona (Martens, 1899) in Guatemala; D. anatinum (Orbigny,1835) in Belize, Guatemala, Nicaragua and Costa Rica; D. depressissimum (Moricand,1839) in Nicaragua, Costa Rica and Panama; D. lucidum (Pfeiffer, 1839) in Guatemala, Belize and Nicaragua; D. surinamense (Clessin, 1884) in Costa Rica and Panama; and Gyraulus percarinatus sp. n. in Panama. The occurrence of B. kuhniana and D. surinamense is first recorded in Central America, and Gyraulus percarinatus is the first representative of the genus provenly occurring in the American continent south of the United States. The following synonymy is proposed: Planorbis declivis Tate, 1870 = Biomphalaria helophila (Orbigny, 1835); Planorbis isthmicus Pilsbry, 1920 = Biomphalaria kuhniana (Clessin, 1883); Planorbis cannarum Morelet, 1849 and Segmentina donbilli Tristram, 1861 = Biomphalaria obstructa (Morelet, 1849); and Planorbis yzabalensis Crosse & Fischer, 1879 = Drepanotrema anatinum (Orbigny, 1835), confirming Aguayo (1933).
在两次前往中美洲的行程中（1967年6月以及1976年7 - 8月），我有机会采集到了尼加拉瓜扁卷螺（Planorbis nicaraguanus Morelet，1849）的地模标本，本文对其进行了解剖学定义，还采集到了伊萨瓦尔扁卷螺（P. yzabalensis Crosse & Fischer，1879），证实了后者与鸭形旋宫螺（Drepanotrema anatinum (Orbigny, 1835)）为同一物种。还发现了以下扁卷螺物种：在尼加拉瓜、危地马拉、哥斯达黎加和伯利兹发现了三旋扁卷螺（Helisoma trivolvis (Say, 1817)）；在哥斯达黎加发现了杜氏扁卷螺（H. duryi (Wetherby, 1879)）；在危地马拉、伯利兹、尼加拉瓜、哥斯达黎加和萨尔瓦多发现了喜湿双脐螺（Biomphalaria helophila (Orbigny, 1835)）；在巴拿马发现了库氏双脐螺（B. kuhniana (Clessin, 1883)）；在危地马拉、伯利兹和萨尔瓦多发现了阻隔双脐螺（B. obstructa (Morelet, 1849)）；在哥斯达黎加发现了细纹双脐螺（B. straminea (Dunker, 1848)）；在危地马拉发现了亚前倾双脐螺（B. subprona (Martens, 1899)）；在伯利兹、危地马拉、尼加拉瓜和哥斯达黎加发现了鸭形旋宫螺（D. anatinum (Orbigny, 1835)）；在尼加拉瓜、哥斯达黎加和巴拿马发现了深凹旋宫螺（D. depressissimum (Moricand, 1839)）；在危地马拉、伯利兹和尼加拉瓜发现了透明旋宫螺（D. lucidum (Pfeiffer, 1839)）；在哥斯达黎加和巴拿马发现了苏里南旋宫螺（D. surinamense (Clessin, 1884)）；以及在巴拿马发现了新物种隆嵴旋螺（Gyraulus percarinatus sp. n.）。首次记录了库氏双脐螺和苏里南旋宫螺在中美洲的出现情况，隆嵴旋螺是在美国以南美洲大陆被证实出现的旋螺属的首个代表物种。提出了以下同义名：泰特扁卷螺（Planorbis declivis Tate, 1870） = 喜湿双脐螺（Biomphalaria helophila (Orbigny, 1835)）；地峡扁卷螺（Planorbis isthmicus Pilsbry, 1920） = 库氏双脐螺（Biomphalaria kuhniana (Clessin, 1883)）；卡纳扁卷螺（Planorbis cannarum Morelet, 1849）和东氏小隔扁螺（Segmentina donbilli Tristram, 1861） = 阻隔双脐螺（Biomphalaria obstructa (Morelet, 1849)）；以及伊萨瓦尔扁卷螺（Planorbis yzabalensis Crosse & Fischer, 1879） = 鸭形旋宫螺（Drepanotrema anatinum (Orbigny, 1835)），这证实了阿瓜约（1933年）的观点。
