Programa de Pós-Graduação em Biologia Animal, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ, Brazil.
Laboratorio de Parasitología General y Especializada, Facultad de Ciencias Naturales y Matemática, Universidad Nacional Federico Villarreal (UNFV), El Agustino 15007, Lima, Peru.
Syst Parasitol. 2021 Aug;98(4):357-367. doi: 10.1007/s11230-021-09983-3. Epub 2021 Jun 4.
Bicentenariella n. g. is proposed to accommodate three new species of dactylogyrid monogeneans found on the gills of the threadfin bass Pronotogrammus multifasciatus Gill (Perciformes: Serranidae) from the Southeastern Pacific Ocean off Peru: Bicentenariella claudiae n. sp. (type-species), B. sinuosa n. sp. and B. puertopizarroensis n. sp. Bicentenariella n. g. is mainly characterised by possessing a broadly X-shaped dorsal bar, which has the anterior arms longer than posterior ones and by having a ventral bar with two medial projections. Bicentenariella n. g. is also characterised by having: (i) anchors equal, each with elongate superficial root and short deep root; (ii) an haptor with bilaterally paired lobes, lacking haptoral reservoirs; (iii) hooks with protruded obtuse thumb and undilated shank; (iv) a tubular tapered-shaped male copulatory organ with basal flap bifurcated or not (MCO), lacking accessory piece; (v) a delicate membrane associated with the shaft of the MCO present or absent; (vi) a muscular trumpet-shaped vagina, vaginal aperture dextrolateral; (vii) eyespots absent, accessory chromatic granules present; and (viii) a not lobulated testis. Bicentenariella claudiae n. sp. is characterised by having a MCO with whip-shaped distal end and a rod-shaped ventral bar with hatchet-shaped lateral ends. Bicentenariella sinuosa n. sp. is typified by possessing a MCO with an irregular filamentous membrane surrounding its shaft and a dumbbell-shaped ventral bar. Bicentenariella puertopizarroensis n. sp. can be differentiated from its congeners by having a tubular-shaped MCO with twisted distal end and a narrow W-shaped ventral bar. Parancylodiscoides peruensis Cruces, Chero, Sáez & Luque, 2017 from Hemanthias peruanus (Steindachner) and P. signiferi Cruces, Chero, Sáez & Luque, 2017 from H. signifer (Garman), are transferred to Bicentenariella n. g. as B. peruensis n. comb and B. signiferi n. comb., respectively.
提出双生贝虫属（Bicentenariella n. g.）以包含在秘鲁东南太平洋的线纹笛鲷（Pronotogrammus multifasciatus Gill）鳃上发现的三种新的指环虫：克劳迪双生贝虫（Bicentenariella claudiae n. sp.）（模式种）、弯曲双生贝虫（B. sinuosa n. sp.）和普埃托皮扎罗双生贝虫（B. puertopizarroensis n. sp.）。双生贝虫属（Bicentenariella n. g.）主要特征为具有宽阔的 X 形背肋，前臂长于后臂，腹肋具有两个内侧突起。双生贝虫属（Bicentenariella n. g.）的特征还包括：（i）等大的锚，各有细长的表根和短的深根；（ii）具双侧配对叶瓣的吸器，无吸器贮液囊；（iii）钩具突出的钝角拇指和未膨胀的柄部；（iv）具基底瓣分叉或不分叉的管状锥形交合器（MCO），无附属片；（v）存在或不存在与 MCO 轴相关的精细膜；（vi）具喇叭状肌肉阴道，阴道孔位于右侧；（vii）无眼点，有附加色粒；（viii）无叶状睾丸。克劳迪双生贝虫（Bicentenariella claudiae n. sp.）的特征为具鞭状末端的 MCO 和斧状侧端的杆状腹肋。弯曲双生贝虫（B. sinuosa n. sp.）的特征为具具不规则丝状膜环绕其轴的 MCO 和哑铃状腹肋。普埃托皮扎罗双生贝虫（B. puertopizarroensis n. sp.）可通过具扭曲末端的管状 MCO 和狭窄的 W 形腹肋与同属种相区别。从海曼氏鲷（Hemanthias peruanus）中分离出的秘鲁副盘绕指环虫（Parancylodiscoides peruensis Cruces, Chero, Sáez & Luque, 2017）和从白鳍笛鲷（Plectropomus signiferi）中分离出的 P. signiferi Cruces, Chero, Sáez & Luque, 2017 被转移到双生贝虫属（Bicentenariella n. g.），分别作为 B. peruensis n. comb. 和 B. signiferi n. comb.。
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