McAllister Chris T, Hnida John A
Science and Mathematics Division, Eastern Oklahoma State College, Idabel, OK 74745, USA.
Department of Microbiology and Immunology, Midwestern University, Glendale, AZ, 85308, USA.
Curr Res Parasitol Vector Borne Dis. 2022 Jul 18;2:100096. doi: 10.1016/j.crpvbd.2022.100096. eCollection 2022.
n. sp. is described from a yellow warbler, (L.), from McCurtain County, Oklahoma, USA. Oöcysts of the new species are subspheroidal to ovoidal with a smooth bi-layered wall, measure (L × W) 24.2 × 20.4 μm, and have a length/width (L/W) ratio of 1.2; a micropyle and oöcyst residuum are both absent, but polar granule(s) are present. Sporocysts are ovoidal to ellipsoidal and measure 14.5 × 9.2 μm, L/W ratio of 1.6; a knob-like Stieda body is present as well as a distinct rounded sub-Stieda body. The sporocyst residuum is composed of various-sized granules in a compact rounded or irregular mass or dispersed between and across the sporozoite. The oöcysts of n. sp. can be differentiated from five other congeners reported from members of the New World warbler family Parulidae from either Mexico, Costa Rica, or Brazil, by being larger on average as well as by possessing a prominent rounded sub-Stieda body, sporozoite striations, and an posterior refractile body. Information is also presented on an sp. being passed by that we choose not to describe as a putative novel species of at this time. These two isosporans represent the first coccidians reported from and, more importantly, the first known from the members of the Parulidae in the USA.
新种是从美国俄克拉荷马州麦柯廷县的一只黄腰林莺（学名：Setophaga petechia）中描述的。新种的卵囊呈亚球形至卵形，壁光滑，双层，大小为（长×宽）24.2×20.4μm，长宽比为1.2；无微孔和卵囊残体，但有极粒。孢子囊呈卵形至椭圆形，大小为14.5×9.2μm，长宽比为1.6；有一个瘤状的斯氏体以及一个明显的圆形亚斯氏体。孢子囊残体由大小不一的颗粒组成，呈紧密的圆形或不规则团块，或分散在子孢子之间及穿过子孢子。该新种的卵囊可与从墨西哥、哥斯达黎加或巴西的新大陆林莺科成员中报道的其他五个同属物种相区分，其平均尺寸更大，且具有明显的圆形亚斯氏体、子孢子条纹和一个后折光体。还提供了关于一种被黄腰林莺排出但我们目前不将其描述为假定新种的等孢子虫的信息。这两种等孢子虫是首次从黄腰林莺中报道的球虫，更重要的是，是首次在美国林莺科成员中发现的已知球虫。
