Instituto de Ecología y Sistemática, Carretera Varona 11835 e/ Oriente y Lindero, La Habana 19, CP 11900, Calabazar, Boyeros, La Habana, Cuba. Department of Environmental Biology, College of Bioscience Biotechnology, Chubu University, 1200 Matsumoto, Kasugai, Aichi 487-8501, Japan..
Zootaxa. 2021 Feb 22;4933(3):zootaxa.4933.3.6. doi: 10.11646/zootaxa.4933.3.6.
Klossnema viguerasi n. sp. (Nematoda: Oxyuridomorpha: Hystrignathidae) is described from the passalid beetle Antillanax pertyi (Kaup, 1869), endemic to Cuba. The females of K. viguerasi n. sp. are morphologically similar but slightly longer than K. repentina Cordeiro Artigas, 1983 (1.143 mm vs. 1.000 mm). Both species differ in that K. viguerasi n. sp. has a longer procorpus (139 µm vs. 110 µm), isthmus (39 µm vs. 24 µm), and tail length (28 µm vs. 21 µm). The distance from the vulva to the anterior end is also longer in the new species (0.748 mm vs. 0.650 mm). The males of K. viguerasi n. sp. are larger than K. repentina (0.980 mm vs. 0.800 mm), but their isthmus is shorter (38 µm vs. 48 µm). New features of the cephalic end of both sexes, and copulatory papillae pattern of the males were observed by SEM and the generic diagnosis is emended in order to include such features. The phylogeny of K. viguerasi n. sp. is inferred by the analysis of the D2-D3 domains of the 28S rDNA and the 18S rDNA. This constitutes the first record of the genus Klossnema for the Cuban archipelago and the West Indies.
Klossnema viguerasi n. sp.（线虫纲：Oxyuridomorpha：Hystrignathidae）是从古巴特有地 Passalid 甲虫 Antillanax pertyi（Kaup，1869）中描述的。Klossnema viguerasi n. sp. 的雌性在形态上与 K. repentina Cordeiro Artigas，1983 相似，但略长（1.143 毫米对 1.000 毫米）。这两个物种的区别在于，K. viguerasi n. sp. 的前体更长（139 µm 对 110 µm），峡部（39 µm 对 24 µm）和尾部长度（28 µm 对 21 µm）。新物种从阴门到前端的距离也更长（0.748 毫米对 0.650 毫米）。Klossnema viguerasi n. sp. 的雄性大于 K. repentina（0.980 毫米对 0.800 毫米），但其峡部更短（38 µm 对 48 µm）。通过 SEM 观察到两性头部末端的新特征和雄性的交合刺模式，并对属的诊断进行了修正，以包括这些特征。通过对 28S rDNA 和 18S rDNA 的 D2-D3 结构域的分析，推断了 K. viguerasi n. sp. 的系统发育。这是古巴群岛和西印度群岛首次记录 Klossnema 属。
