A new myxozoan species belonging to the genus Henneguya was isolated from the serous membrane of the visceral cavity of the hognosed catfish Brochis multiradiatus from Peruvian Amazon. Whitish plasmodia, macroscopically visible, were found in four of the thirty examined fishes. Mature myxospores were ellipsoidal in shape in frontal view and had a total length of 44.5 ± 0.6 μm (43.9–45.1), spore body measured 18.7 ± 0.9 μm (16.8–19.6) in length, 7.1 ± 0.2 μm (6.6–7.4) in width and 5.5 ± 0.3 μm (4.9–5.6) in thickness. The two polar capsules were elongated and equal in size, measuring 9.1 ± 0.1 μm (8.8–9.4) in length and 1.7 ± 0.1 μm (1.6–1.8) in width, occupying half of the myxospore body. Polar tubules coiled in 10–11 turns perpendicular to the long axis of the polar capsule. The caudal appendage was not bifurcated and measured 25.8 ± 0.6 μm (24.7–26.5) in length. The sequencing of the 18S rDNA gene resulted in 1400 bp and this sequence did not match any of the myxozoans available in GenBank. Phylogenetic analysis placed the new species in a well-supported subclade of Henneguya spp. infecting callichthyid fishes, with Henneguya loretoensis being the closest species. This study is the first description of a myxozoan species, Henneguya multiradiatus n. sp. from a fish of the genus Brochis.

从被诊断的cat鱼Brochis multiradiatus的内脏腔浆液膜中分离出一种属于Henneguya属的新粘虫物种。来自秘鲁亚马逊。肉眼可见的白色疟原虫在三十种被检查的鱼类中有四种被发现。成熟的粘孢子在正面呈椭圆形，总长度为44.5±0.6μm（43.9–45.1），孢子体的长度为18.7±0.9μm（16.8–19.6），在7.1±0.2μm（6.6–7.4）宽度为5.5±0.3μm（4.9–5.6）。两个极性囊被拉长并且大小相等，长9.1±0.1μm（8.8-9.4），宽1.7±0.1μm（1.6-1.8），占粘孢子体的一半。极性小管以10-11圈弯曲，垂直于极性小囊的长轴。尾附肢没有分叉，长度为25.8±0.6μm（24.7–26.5）。18S rDNA基因的测序结果为1400 bp，该序列与GenBank中可用的任何黏附动物都不匹配。亨内瓜亚种 感染角鲨鱼的鱼类，其中最接近的鱼类是Henneguya loretoensis。这项研究是对粘虫动物Henneguya multiradiatus n的首次描述。sp。来自Brochis属的一种鱼。