Isospora attilae, Rodrigues, Mariana Borges, Silva, Lidiane Maria Da, Lopes, Bruno Do Bomfim, Berto, Bruno Pereira, Luz, Hermes Ribeiro, Ferreira, Ildemar & Lopes, Carlos Wilson Gomes, 2015

Rodrigues, Mariana Borges, Silva, Lidiane Maria Da, Lopes, Bruno Do Bomfim, Berto, Bruno Pereira, Luz, Hermes Ribeiro, Ferreira, Ildemar & Lopes, Carlos Wilson Gomes, 2015, A new species of Isospora Schneider, 1881 (Apicomplexa: Eimeiriidae) from the grey-hooded attila Attila rufus Vieillot, 1819 (Passeriformes: Tyrannidae) on the Marambaia island, Brazil, Zootaxa 4034 (1), pp. 193-196 : 194-195

Isospora attilae n. sp.

Type host. Grey-hooded attila Attila rufus (Vieillot, 1819) (Aves: Passeriformes : Tyrannidae ).

Type locality. Marambaia Island (23°04'S, 43°53'W), Rio de Janeiro, Brazil.

Site of infection. Not investigated

Type-material. Oocysts in 70–100% ethanol, phototypes and line drawings are deposited and available (http:// r1.ufrrj.br/lcc) in the Parasitology Collection of the Laboratório de Coccídios e Coccidioses, at UFRRJ, located in Seropédica, Rio de Janeiro, Brazil. Photographs of the type-host specimens (symbiotypes) are deposited in the same collection. The repository number is P-57/2015.

Etymology. The specific epithet is derived from the generic name of the type host.

Description ( Figs 1 a–c; 2a–c). Oocyst shape (n = 17) sub-spherical to ellipsoidal; oocyst wall bilayered; wall thickness 1.3 (1.1–1.5); outer wall smooth, c. 2/3 of total thickness; L × W = 20.3 × 19.0 (18–22 × 18–21), L/W ratio = 1.07 (1.0–1.2); M, and OR absent, PG present, one or two. Sporocyst shape (n = 13) ellipsoidal; L × W = 13.5 × 7.9 (12– 15 × 7–9); L/W ratio = 1.73 (1.6–1.9); SB present, knob-like, 1.0 high × 2.0 wide; SSB present, rounded to trapezoidal, 2.5 high × 4.0 wide; PSB absent; SR present, composed of granules of different sizes; SZ vermiform with 1 posterior SRB and centrally located N.

Remarks. Isospora attilae differs from other Isospora species from the passerines of same family ( Table 1). Isospora mionectesi has oocysts and sporocysts larger than I. attilae . Isospora feroxis is very similar to I. attilae , however, it can be distinguished by SB flattened and ovoidal shape of sporocyst ( Berto et al., 2009a; Berto et. al. 2009b).

Coccidia Host Reference Oöcysts

Shape Measurements (µm) Shape index Wall (µm) Polar granule sub- spheroidal 18.7 × 18.0 1.1 c. 1.2 present (18–20 × 17–20) (1.0–1.1) usually 2

Isospora Mionectes Berto et al. ellipsoidal 28.3 × 21.2 1.3 bi-layered, present, 1 or

mionectesi rufiventris Cabanis , (2009b) (23-31 × 19-23) (1.2–1.4) c. 1.3 2 1846

Isospora ovoidal 11.7 × 8.5 present present diffuse

feroxis (11–13 × 8-10) flattened prominent,

Isospora Mionectes Berto et al. elongate 19.7 × 11.7 present present subspheric

mionectesi rufiventris Cabanis, (2009b) ellipsoidal (17-22 × 10-13) rounded prominent al,

1846 compact

Isospora Attila rufus current work ellipsoidal 13,5 × 7,9 present present rounded diffuse

attilae (Vieillot, 1819) (12-15 × 7-9) knob like to trapezoidal

Figures

FIGURE 1. Line drawings of Isospora attilae n. sp., a new coccidium species recovered from the grey-hooded attila, Attila rufus. (a) sporulated oocyst with its respective variations of (b – d) Stieda and substieda bodies. Scale-bar: 10 µm.