Krainer Liubomyr, Susulovsky Andrij, BostrÖm Sven, PeÑa-Santiago Reyes
State Museum of Natural History, NASU, Theatralna str. 18, Lviv 79008, Ukraine..
Zootaxa. 2019 Feb 22;4560(1):85-94. doi: 10.11646/zootaxa.4560.1.4.
Two Metaporcelaimus species, one new and one known, are described from Ukraine. Metaporcelaimus petrophilus sp. n. is characterized by its 1.30-1.58 mm long body, lip region offset by deep constriction and 16-18 µm broad, odontostyle 15-17 µm long, neck 360-413 µm long, pharyngeal expansion occupying 47-54% of total neck length, uterus simple and 83-125 µm long or 1.6-2.7 times the corresponding body diameter, uterine eggs with granulate shell, V = 51-55%, tail conical (35-40 µm, c = 33-42, c' = 1.4-1.8 in females), spicules 43-50 µm long, and 9-13 spaced ventromedian supplements with hiatus. New data, including the first description of male specimens and SEM study, are provided for M. ovogranulosus, the Ukrainian populations of which are nearly identical to the type population from California.
从乌克兰描述了两种后圆线虫属物种，一种为新物种，一种为已知物种。新种石生后圆线虫（Metaporcelaimus petrophilus sp. n.）的特征为：虫体长1.30 - 1.58毫米，唇区由深缢缩与虫体区分，宽16 - 18微米，口针长15 - 17微米，颈部长360 - 413微米，咽扩张部占颈部总长度的47 - 54%，子宫简单，长83 - 125微米或为相应体宽的1.6 - 2.7倍，子宫内虫卵具颗粒状壳，V = 51 - 55%，尾锥形（雌虫尾长35 - 40微米，c = 33 - 42，c' = 1.4 - 1.8），交合刺长43 - 50微米，具9 - 13个间隔的腹中线补充器且有间隙。提供了包括雄虫标本首次描述和扫描电镜研究在内的新数据，用于研究颗粒卵后圆线虫（M. ovogranulosus），其乌克兰种群与来自加利福尼亚的模式种群几乎相同。
