Amin Omar M, Heckmann Richard A, Wilson Eric, Keele Brianna, Khan Aly
Institute of Parasitic Diseases, 11445 E. Via Linda, # 2-419, Scottsdale, AZ, 85259, USA,
Parasitol Res. 2015 Jun;114(6):2291-9. doi: 10.1007/s00436-015-4424-0. Epub 2015 Mar 26.
A new species of Centrorhynchus (Centrorhynchidae) with receptacle insertion at the posterior third of the proboscis is described from the pheasant crow Centropus sinensis (Stephens) (Cuculidae) in Pakistan. Centrorhynchu sglobirostris n. sp. is similar to the 98 other known species of Centrorhynchus Lühe, 1911 in having long cylindrical trunk with anterior dilation and transverse anastomoses of the secondary lacunar vessels. However, specimens of C. globirostris differ from all other species of the genus by having a unique globular proboscis not divided into anterior proboscis with rooted hooks and posterior proboscis with rootless spines. Posterior hooks of C. globirostris emerge at the level of the receptacle insertion and are uniquely fully rooted. Sequencing and phylogenetic analysis of C. globirostris 18S and 28S ribosomal RNA genes reveals the genetic and evolutionary relationships between C. globirostris and other members of Centrorhynchidae which have representative orthologs in public databases. Comparison to known acanthocephalans confirms appropriate inclusion in the genus Centrorhynchus.
在巴基斯坦的雉鸻（Centropus sinensis (Stephens)，杜鹃科）体内发现了一种新的Centrorhynchus属（Centrorhynchidae科）物种，其吻突的交接器插入部位在吻突后三分之一处。新物种球形吻棘头虫（Centrorhynchus globirostris n. sp.）与Centrorhynchus Lühe, 1911属已知的其他98个物种相似，具有长圆柱形的躯干，前端扩张，次生腔隙血管横向吻合。然而，球形吻棘头虫的标本与该属的所有其他物种不同，其具有独特的球形吻突，不分为带有有根钩的前吻突和带有无根刺的后吻突。球形吻棘头虫的后钩出现在交接器插入部位的水平，并且独特地完全有根。对球形吻棘头虫18S和28S核糖体RNA基因的测序和系统发育分析揭示了球形吻棘头虫与Centrorhynchidae科其他成员之间的遗传和进化关系，这些成员在公共数据库中有代表性的直系同源物。与已知棘头虫的比较证实了其在Centrorhynchus属中的适当归属。
