Lainson R, Shaw J J
Wellcome Parasitology Unit, Instituto Evandro Chagas, Fundação Nacional de Saúde, Belém, Pará, Brazil.
J Protozool. 1991 Jan-Feb;38(1):28-30. doi: 10.1111/j.1550-7408.1991.tb04792.x.
Feces from a juvenile specimen of the anteater Tamandua tetradactyla from Ponta de Pedras, Marajó, Pará, northern Brazil, contained three different coccidial oocysts: Eimeria tamanduae Lainson, 1968; E. corticulata Lainson & Shaw, 1990; and a third species previously unrecorded and described here as Eimeria marajoensis n. sp. Oocysts of the latter parasite are spherical to subspherical, 13.9 +/- 1.5 x 13.4 +/- 1.4 (11.1-16.5 x 11.1-16.5) microns, shape index (length/width) 1.0 (1.0-1.2). The oocyst wall is a single, colorless layer about 0.6-1.0 microns thick with no striations or micropyle. There is no oocyst residuum, but a single, round, oval or irregularly shaped polar granule of about 0.75-2.5 microns is consistently present. The sporocysts are broadly ellipsoidal, 7.1 +/- 0.7 +/- 5.3 +/- 0.6 (6.0-8.8 x 4.0-5.7) microns, shape index 1.3 (1.2-1.5), with a delicate wall bearing minute stieda body. No sub-stieda body was visible. The sporocyst residuum consists of some 10-20 rounded granules, lying between the two slightly curved sporozoites which measure approximately 6.5 x 2.0 microns. Sporocyst refractile bodies were not discernable.
来自巴西北部帕拉州马拉若岛蓬塔德佩德拉斯的一只食蚁兽（四趾食蚁兽）幼体的粪便中含有三种不同的球虫卵囊：1968年发现的塔曼杜埃艾美耳球虫；1990年发现的皮层艾美耳球虫；以及第三种此前未记录且在此处描述为马拉若艾美耳球虫新种的球虫。后一种寄生虫的卵囊呈球形至亚球形，大小为13.9±1.5×13.4±1.4（11.1 - 16.5×11.1 - 16.5）微米，形状指数（长/宽）为1.0（1.0 - 1.2）。卵囊壁为单层无色，厚约0.6 - 1.0微米，无条纹或微孔。没有卵囊残体，但始终存在一个约0.75 - 2.5微米的单个圆形、椭圆形或不规则形的极粒。孢子囊宽椭圆形，大小为7.1±0.7×5.3±0.6（6.0 - 8.8×4.0 - 5.7）微米，形状指数为1.3（1.2 - 1.5），壁薄，有微小的斯氏体。未见副斯氏体。孢子囊残体由约10 - 20个圆形颗粒组成，位于两个略微弯曲的子孢子之间，子孢子大小约为6.5×2.0微米。未观察到孢子囊折光体。
