Cyclustera ibisae ( Schmidt & Bush, 1972 ) Bona , 1975

Ortega-Olivares, Mirza P., Hernández-Mena, David I., León, Gerardo Pérez-Ponce De & García-Varela, Martín, 2011, Helminths of the white ibis, Eudocimus albus (Aves: Therskiornithidae) in Mexico., Zootaxa 3088, pp. 15-26 : 19

Cyclustera ibisae ( Schmidt & Bush, 1972) Bona, 1975

( Figs. 5, 6 )

Localities. SINALOA: Laguna el Caimanero. TAMAULIPAS: Punta Piedra, Laguna Madre. VERACRUZ: Humedal los Chivos, Laguna Tempoal, Laguna la Rivera.

Specimens deposited. CNHE 7712, 7713, 7714.

Remarks. The tapeworms recovered in this study were identified as Cyclustera ibisae by considering the morphology of the rostellar hooks ( Ortega-Olivares et al. 2008). This species was previously found in the white ibis, Eudocimus albus in Florida ( Schmidt & Bush 1972). Later, C. ibisae was recorded from the intestine of Ardea alba (Linnaeus) (≈ Casmerodius albus ), Pelecanus occidentalis (Linnaeus) , Phalacrocorax auritus (Lesson) , and P. brasilianus (Humboldt) from Cuba (see Rysavy & Macko 1973; Bona 1975). Cyclustera ibisae is distinguished from other congeneric species by possessing the rostellar hooks arranged in 2 circles of 10 hooks each, with handle and guard distinctively striated lengthwise (see Scholz et al. 2002) ( Fig. 6 ). Adults of this species have been reported in numerous groups of fish-eating birds distributed in Southeastern U.S.A. (Florida, Georgia), Cuba and Southeastern Mexico (Yucatan Peninsula) ( Schmidt & Bush 1972; Rysavy & Macko 1973; Sepúlveda et al. 1994; Kinsella et al. 1996; Kinsella & Forrester 1999; Scholz et al. 2002; Ortega-Olivares et al. 2008). The presence of C. ibisae in the white ibis in 3 localities of the Gulf of Mexico and 1 locality of the Pacific Ocean slope, extend the distribution range of this tapeworm.

Figures

FIGURES 5 – 6. 5. Cyclustera ibisae Schmidt & Bush, 1972. 6. Hooks of the rostellum (Distal hooks and proximal hooks). Scale bars. FIGURE. 5 = 1 mm. FIGURE. 6 = 50 µm.