Amin Omar M, Oğuz Mehmet C, Heckmann Richard A, Tepe Yahya, Kvach Yuriy
Institute of Parasitic Diseases, 11445 E. Via Linda # 2-419, Scottsdale, AZ 85259, USA.
Syst Parasitol. 2011 Oct;80(2):125-35. doi: 10.1007/s11230-011-9312-0. Epub 2011 Sep 7.
Acanthocephaloides irregularis n. sp. (Arhythmacanthidae) is described from four species of marine fishes in the Gulf of Odessa and Sukhyi Lyman, Ukrainan Black Sea waters, making it the tenth species of the genus. The hosts are the combtooth blenny Parablennius zvonimiri (Kolombatovic) (Blenniidae), the mushroom goby Ponticola eurycephalus (Kessler) (Gobiidae), the tubenose goby Proterorhinus marmoratus (Pallas) (Gobiidae) and the black-striped pipefish Syngnathus abaster Risso (Syngnathidae). The new species is most similar to its closest relative, Acanthocephaloides propinquus (Dujardin, 1845), in proboscis shape and armature (12 longitudinal rows of 5 hooks) and the shape of the trunk, reproductive system and lemnisci, but differs in having randomly distributed trunk spines. These trunk spines are organised in circular rings of individual spines separated by aspinose zones. The new species is also unique in having an anterior trunk collar, a very large triangular cephalic ganglion, nucleated pouches at the posterior end of the proboscis receptacle, and hooks and spines with roots bearing anterior manubria. Valid and invalid species of Acanthocephaloides Meyer, 1932 are listed and a key to all ten species is included.
不规则棘头线虫新种（无节律棘头科）是从乌克兰黑海敖德萨湾和苏希伊莱曼的四种海洋鱼类中描述的，这使其成为该属的第十个物种。宿主为梳齿鳚属的兹沃尼米里梳齿鳚（科洛姆巴托维奇）（鳚科）、蘑菇虾虎鱼属的宽头蘑菇虾虎鱼（凯斯勒）（虾虎鱼科）、管鼻虾虎鱼属的斑纹管鼻虾虎鱼（帕拉斯）（虾虎鱼科）以及黑纹海龙属的阿巴斯德海龙（里索）（海龙科）。新物种在吻部形状和武装（12 排纵向排列，每排 5 个钩）以及躯干、生殖系统和缰的形状上与其最亲近的亲属——近缘棘头线虫（杜雅尔丹，1845 年）最为相似，但不同之处在于其躯干棘随机分布。这些躯干棘以单个棘的圆环形式排列，由无棘区域隔开。新物种的独特之处还在于其具有前躯干环、非常大的三角形脑神经节、吻囊后端的有核囊以及带有带有前柄的根的钩和棘。列出了 1932 年迈耶所描述的棘头线虫属的有效和无效物种，并包含了所有十个物种的检索表。
