Type host: Chaerephon pumila (Cretzschmar, 1830) (Syn. Nyctinomus pumilis; Syn, Tadarida pumila), Lesser mastiff bat.

Other hosts: Tadarida lobata (Thomas, 1891)? (see Remarks).

Type locality: AFRICA: Uganda, Entebbe.

Geographic distribution: AFRICA: Uganda.

Description of oocyst: Oocyst shape: subspheroidal to broadly ellipsoidal; number of walls: 1; wall thickness: "quite thick," although the line drawing shows it to be a thin, 1-layered structure; wall characteristics: not given; L x W: 23-25 x 18-22; L/W ratio: not given; M: absent; OR: present; OR characteristics: a large sphere of coarse granules taking up about 1/2 of the space within the oocyst (line drawing); PG: absent. Distinctive features of oocyst: large sphere of coarse granules that displace sporocysts to one end of oocyst.

Description of sporocysts and sporozoites: Sporocyst shape: slightly ovoidal; L x W: 7-9 x 6-7; L/W ratio: not given; SB: absent; SSB: absent; PSB: absent; SR: present; SR characteristics: a few small granules between SP (line drawing); SP: elongate, with 1 RB located at rounded end (line drawing). Distinctive features of sporocyst: SB, SSB, PSB all absent.

Prevalence: 3/11 (27%).

Sporulation: Exogenous. Oocysts sporulated in 4 d in 0.5% chromic acid solution at 18-20 C.

Prepatent and patent periods: Unknown.

Site of infection: Unknown. Oocysts recovered from feces.

Materials deposited: None.

Remarks: Lavier (1927) described this species from 3/11 (27%) C. pumila (=N. pumilus) from Entebbe, Uganda. Pellérdy (1974) listed "Tadarida limbata" [sic] (probably T. lobata) as a host, but gave no mention why he did so. Cerná and Rysavy (1976) measured 27 sporulated oocysts from Taphozous nudiventris Cretzschmar, 1830 (Emaballonuridae), which they suggested were E. dukei. Their oocysts were 21-25 x 18-23 with a thin, membranous wall without a M, but with an "enormously large residual body (10-13 in diameter);" the sporocysts were ovoidal, 7-9 x 4-5 with an indistinct SB and an SR of "individual residual granules only." Their oocysts sporulated in ~20 hrs at 30 C. They suggested that the oocysts they observed may be those of E. dukei and "that this coccidian from African bats may utilize a wide range of hosts." Unfortunately, we know so little about the coccidia from bats that we do not know if some Eimeria species of bats can transfer between host genera (which is possible) or between host families (which is unlikely). Levine and Ivens (1981) included E. dukei in their brief summary of coccidia from bats, but made no mention of the observations of Cerná and Rysavy (1976).

References: Cerná and Rysavy (1976); Lavier (1927); Levine and Ivens (1981); Pellédy (1974).