Centrorhynchus guira Lunaschi & Drago, 2010

Smales, Lesley R., 2013, Acanthocephala including the descriptions of new species of Centrorhynchus (Centrorhynchidae) and the redescription of Lueheia inscripta (Westrumb, 1821) (Plagiorhynchidae) from birds from Paraguay South America, Revue suisse de Zoologie 120 (2), pp. 175-202 : 181

Centrorhynchus guira Lunaschi & Drago, 2010 Figs 5-12

MATERIAL EXAMINED: MHNG-INVE-38439; one male, pieces of a male and two females from Crotophaga ani Linnaeus, 1758 , small intestine; Paraguay, Santa Maria , 28.10.1982 .

COMMENTS: The proboscis armature of the specimens from C. ani , 32 longitudinal rows of 7-8 + 3-5 + 6-7, a total of 16-19 hooks per row, was consistent with that of C. guira . The armature of C. guira was described as 32 rows of 8-9 + 4 + 6, 18-19 hooks, although study of the photomicrograph, fig. 1b suggests that there are 5 transitional hooks in some rows ( Lunaschi & Drago, 2010). The morphology and morphometrics of the specimens from C. ani , with the exception of the neck length, were also consistent with those of C. guira (see Table 3). The relevant photomicrograph, fig. 1a, given by Lunaschi & Drago (2010), is not clear although careful scrutiny suggests the neck length is more likely to be about 205-255, a measurement consistent with that of the specimens from C. ani , than the 30-68 given in the text. Examination of the male specimens in this study suggest that the genital pore is terminal as stated in Lunaschi & Drago (2010). In the photomicrograph fig. 1e ( Lunaschi & Drago, 2010), however, the genital pore appears subterminal. In females the posterior end of the trunk is swollen and the genital pore is subterminal. Figures 5-12 are given here for C. guira to show the trunk shape and the relative proportions and positions of the internal organs because they were not illustrated in the original description.

The geographical range of C. guira has been extended from Argentina to Paraguay and the host range from Guira guira (Gmelin, 1788) to Cryptopgaga ani , both belonging to the cuckoo family, Cuculidae .