The phylogeny of Goussia and Choleoeimeria (Apicomplexa; Eimeriorina) and the evolution of excystation structures in coccidia

The phylogenetic relationships of Goussia janae and Choleoeimeria sp. were analyzed using the small subunit ribosomal RNA gene (SSU rDNA). This is a first attempt to study the molecular phylogeny of coccidian genera parasitizing strictly poikilotherm hosts. The biliary Eimeria-like coccidia of reptiles classified into the genus Choleoeimeria form a sister clade to the family Eimeriidae, which confirms the separate generic status of the genus Choleoeimeria. The position of Goussia is less robustly resolved, since it forms a trichotomy with the Eimeriidae and Sarcocystidae, or alternatively constitutes the earliest branch of the coccidian lineage. Morphological similarities, namely the extracytoplasmic location of the endogenous stages, and the presence of sutures in the sporocyst wall are discussed in the context of the traditional classification of eimeriids. In contrast to the morphology-based systematics, the monophyly of Goussia and Choleoeimeria is not supported by the SSU rDNA data.     

Eimeria ornata N. Sp. (Apicomplexa: Eimeriidae) from the Ornate Box Turtle, Terrapene ornata ornata (Reptilia: Testudines), in Texas

Eimeria ornata n. sp. is described from the feces of 6/16 (37.5%) ornate box turtles, Terrapene ornata ornata , in northcentral Texas. Endogenously sporulated oocysts are ellipsoid 17.9 × 15.7(16-21 × 14-18) μm, with a thin, single-layered wall; shape index 1.14 (1.0-1.3). A micropyle is absent but a polar granule was present in one third of the oocysts. An oocyst residuum was present, consisting of numerous small globules situated either in a distinct mass or scattered within the oocyst. The sporocysts are elongate, 11.1 × 5.4 (9-13 × 5-6) μm, with an indistinct Stieda body at 1 pole. A sporocyst residuum is present, consisting either as a compact mass or as scattered granules. The sporozoites are elongate, 9.5 × 2.0 (8-12 × 2) μm, in situ, with spherical anterior and posterior refractile bodies. The new species is distinguished from the similar Eimeria carri Ernst & Forrester, 1973, from eastern box turtles, T. Carolina , by slight differences in oocyst morphology and endogenous sporulation.     

The Identity of Simulium murmanum Enderlein, 1935 (Diptera: Simuliidae)

The identity of Simulium murmanum is re-established by designation of lectotype and paralectotype. The species is common and widespread in the northern Holarctic Region and has up to now been reported from the Nearctic Region as S. corbis and from the Palaearctic Region as S. relictum (and S. rostratum, auct., nec Lundstrüm).     

驯鹿艾美虫属一新种：（球虫目：艾美科）

本文寄生于驯鹿Ｒａｎｇｉｆｅｒ ｔａｒａｎｄｕｓ艾美虫属一新种－－敖鲁古雅艾美虫Ｅｉｍｅｒｉａ ａｏｌｕｇｕｙａｅｎｓｉｓ ｓｐ．ｎｏｖ．,新种的特种是具有卵囊残体和最小的量度,可与文献中记载寄生于驯鹿的五种艾美虫相区别。     

Additional Notes on the Coccidian Parasites of the Soft-shell Turtle,Trionyx spiniferus Le Sueur,in Iowa,with a Description of Eimeria vesicostieda sp. n.*

SYNOPSIS Oocysts of Eimeria dericksoni Roudabush, Eimeria mascoutini Wacha & Christiansen, and Eimeria vesicostieda sp. n. were isolated from the Spiny Soft-shell Turtle, Trionyx spiniferus LeSueur, in Iowa. The sporulated oocysts of E. dericksoni are redescribed to include, for the first time, the dimensions of the sporocysts (6.0–8.5 × 3.0–5.0 μm) and the structural appearance of the Stieda body (thinly convex); the oocysts of E. vesicostieda are newly described as being thickwalled, narrowly ovoid to narrowly ellipsoid, measuring 22.0–25.5 × 16.5–20.5 μm. and having a polar granule, a sporocyst residuum, and a vesicle-like Stieda body; the oocysts of E. mascoutini are documented photographically.