Gyrodactylus pictae Cable

Rubio-Godoy, Miguel, Paladini, Giuseppe & García-Vásquez, Adriana, 2010, Gyrodactylus jarocho sp. nov. and Gyrodactylus xalapensis sp. nov. (Platyhelminthes: Monogenea) from Mexican poeciliids (Teleostei: Cyprinodontiformes), with comments on the known gyrodactylid fauna infecting poeciliid fish, Zootaxa 2509, pp. 1-29 : 22

Gyrodactylus pictae Cable , van Oosterhout, Barson & Harris, 2005

( Figure 18 ; Tables 4 and 7)

Type host: Micropoecilia (= Poecilia ) picta Regan (“swamp guppy”).

Site of infection: Skin and fins.

Type locality: Lower Marianne River, Northern drainage of the Northern Mountain Range, Trinidad.

Type material examined: One paratype ( BMNH 2004.7.27.2–5).

Comments: The marginal hook sickles of G. p i c t a e have a straight shaft which makes two noticeable deflections in angle towards the point. The point is level with the sickle base giving the sickle a wide aperture which is more open than that of both G. j a ro c h o sp. nov. and G. xalapensis sp. nov. ( Figures 19, 20 ). Although the sickle is of a similar length to that of G. j a ro c h o sp. nov., the sickle base of G. pictae is approximately two thirds the depth of that of G. j a ro c h o sp. nov. The heel of G. pictae is rectangular, the toe drops below the lower level of the heel and the toe bridge is twice the length of that seen in G. j a ro c h o sp. nov. but similar in length to that of G. xalapensis sp. nov. ( Figures 19, 20 ).

Figures

FIGURES 15 – 29. A size invariant comparison of the marginal hook sickles of two new species of Gyrodactylus with the nine species previously recorded infecting poeciliids. 15. Gyrodactylus milleri Harris & Cable, 2000 (re-examination of the small, common form of marginal hook); 16. Overlay of G. milleri with G. j aroc h o sp. nov. (broken line); 17. Overlay of G. milleri with G. xalapensis sp. nov. (broken line); 18. Gyrodactylus pictae Cable, van Oosterhout, Barson & Harris, 2005 (re-examination); 19. Overlay of G. pictae with G. ja ro c ho sp. nov. (broken line); 20. Overlay of G. pictae with G. xalapensis sp. nov. (broken line); 21. Gyrodactylus poeciliae Harris & Cable, 2000 (re-examination); 22. Overlay of G. poeciliae with G. jaroc h o sp. nov. (broken line); 23. Overlay of G. poeciliae with G. xalapensis sp. nov. (broken line); 24. Gyrodactylus rasini Lucký, 1973 (re-examination); 25. Overlay of G. r a s i n i with G. j a ro c ho sp. nov. (broken line); 26. Overlay of G. rasini with G. xalapensis sp. nov. (broken line); 27. Scanning electron micrograph of Gyrodactylus turnbulli Harris, 1986 from Andrew P. Shinn’s collection (re-examination); 28. Overlay of G. turnbulli with G. j a ro c ho sp. nov. (broken line); 29. Overlay of G. turnbulli with G. xalapensis sp. nov. (broken line). Scale bars = 3 µm.