Eugregarines are understudied apicomplexan parasites of invertebrates inhabiting marine, freshwater, and terrestrial environments. Most currently known terrestrial eugregarines have been described parasitizing the gut from less than 1% of total insect diversity, with a high likelihood that the remaining insect species are infected. Eugregarine diversity in orthopterans (grasshoppers, locusts, katydids, and crickets) is still little known. We carried out a survey of the eugregarines parasitizing the Mexican lubber grasshopper, Taeniopoda centurio, an endemic species to the northwest of Mexico. We described two new eugregarine species from the gut of the host: Amoebogregarina taeniopoda n. sp. and Quadruspinospora mexicana n. sp. Both species are morphologically dissimilar in their life‐cycle stages. Our SSU rDNA phylogenetic analysis showed that both species are phylogenetically distant to each other, even though they parasitize the same host. Amoebogregarina taeniopoda n. sp. clustered within the clade Gregarinoidea, being closely related to Amoebogregarina nigra from the grasshopper Melanoplus differentialis. Quadruspinospora mexicana n. sp. clustered within the clade Actinocephaloidea and grouped with Prismatospora evansi, a parasite from dragonfly naiads. Amoebogregarina taeniopoda n. sp. and Q. mexicana n. sp. represent the first record of eugregarines found to infect a species of the family Romaleidae.

中文翻译：

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在墨西哥寄生于 Lubber Grasshopper Taeniopoda centurio (Drury, 1770) (Insecta: Orthoptera: Romaleidae) 的两种新 Gregarine 物种 (Apicomplexa: Eugregarinorida) 的形态学和系统发育位置

Eugregarines 是栖息在海洋、淡水和陆地环境中的无脊椎动物的顶端复合体寄生虫。大多数目前已知的陆生 eugregarines 被描述为寄生于肠道，占昆虫总多样性的不到 1%，其余昆虫物种很可能被感染。直翅目昆虫（蚱蜢、蝗虫、蟋蟀和蟋蟀）中的 Eugregarine 多样性仍然鲜为人知。我们对寄生于墨西哥西北部特有物种 Taeniopoda centurio 的 eugregarines 进行了调查。我们从宿主的肠道中描述了两种新的 eugregarine 物种：Amoebogregarina taeniopoda n。sp. 和 Quadruspinospora mexicana n. sp. 这两个物种在它们的生命周期阶段在形态上是不同的。我们的 SSU rDNA 系统发育分析表明，这两个物种在系统发育上彼此相距甚远，即使它们寄生在同一宿主上。Amoebogregarina taeniopoda n. sp. 聚集在 Gregarinoidea 分支内，与来自蚱蜢 Melanoplus Differentis 的 Amoebogregarina nigra 密切相关。Quadruspinospora mexicana n. sp. 聚集在 Actinocephaloidea 分支内，并与 Prismatospora evansi 分组，这是一种来自蜻蜓幼虫的寄生虫。Amoebogregarina taeniopoda n. sp. 和 Q. 墨西哥 n. sp. 代表了发现感染 Romaleidae 家族的 eugregarines 的第一个记录。与来自蚱蜢 Melanoplus Differentis 的 Amoebogregarina nigra 密切相关。Quadruspinospora mexicana n. sp. 聚集在 Actinocephaloidea 分支内，并与 Prismatospora evansi 分组，这是一种来自蜻蜓幼虫的寄生虫。Amoebogregarina taeniopoda n. sp. 和 Q. 墨西哥 n. sp. 代表了发现感染 Romaleidae 家族的 eugregarines 的第一个记录。与来自蚱蜢 Melanoplus 的 Amoebogregarina nigra 密切相关。Quadruspinospora mexicana n. sp. 聚集在 Actinocephaloidea 分支内，并与 Prismatospora evansi 分组，这是一种来自蜻蜓幼虫的寄生虫。Amoebogregarina taeniopoda n. sp. 和 Q. 墨西哥 n. sp. 代表了发现感染 Romaleidae 家族的 eugregarines 的第一个记录。