Sánchez-Alvarez A, García-Prieto L, Pérez-Ponce de León G
Laboratorio de Helmintología, Instituto de Biología, Universidad Nacional Autónoma de México, México DF.
J Parasitol. 1998 Aug;84(4):840-5.
A new species of Rhabdochona from 2 species of freshwater fishes, Alloophorus robustus and Goodea atripinnis, is described from 2 lakes of the Mesa Central of Mexico. Rhabdochona lichtenfelsi n. sp. belongs to a group of species possessing inconspicuous bifurcated deirids and a prostom armed with 10 large teeth. It is distinguished from them because the left spicule is shorter, the tip is bifurcate, and both spicules lack a reflected dorsal barb. The new species most closely resembles Rhabdochona catostomi and Rhabdochona milleri but differs from them because the former possesses a left spicule tip with ventral barb, right spicule with reflected distal barb, and 5 pairs of postanal papillae, whereas R. milleri has 14 prostomal teeth, eggs rounded, and left spicule with slightly outlined bifurcation and right with a dorsal barb. Previous records of R. milleri in Mexico must be referred to R. lichtenfelsi.
从墨西哥中部台地的两个湖泊中的两种淡水鱼，即粗壮异耳鱼（Alloophorus robustus）和黑鳍古氏鱼（Goodea atripinnis）中，描述了一种新的似颈线虫属（Rhabdochona）物种。利氏似颈线虫（Rhabdochona lichtenfelsi）新种属于具有不明显分叉排泄孔和口前部有10颗大齿的一组物种。它与它们的区别在于左交合刺较短，尖端分叉，且两根交合刺均无背侧倒钩。新物种与卡氏似颈线虫（Rhabdochona catostomi）和米勒似颈线虫（Rhabdochona milleri）最为相似，但与它们不同，因为前者左交合刺尖端有腹侧倒钩，右交合刺有远端背侧倒钩，且有5对肛后乳突，而米勒似颈线虫有14颗口前部齿，卵呈圆形，左交合刺有略微明显的分叉，右交合刺有背侧倒钩。墨西哥之前关于米勒似颈线虫的记录必须归为利氏似颈线虫。
