Neotropical Monogenoidea. 42. Pavanelliella scaphiocotylus sp. nov. (Dactylogyridae) from the Nasal Cavity of the Guatemalan Chulin, Rhamdia guatemalensis (Siluriformes: Heptapteridae), from a Cenote on the Yucatán Peninsula, Mexico
2003; Volume: 70; Issue: 2 Linguagem: Inglês
10.1654/1525-2647(2003)070[0136
ISSN1938-2952
AutoresDelane C. Kritsky, Edgar F. Mendoza‐Franco,
Tópico(s)Ichthyology and Marine Biology
ResumoThe generic diagnosis of Pavanelliella (Monogenoidea: Dactylogyridae) is emended to include species with rounded, cephalic margins and well-developed haptors set off from the trunk by a peduncle. Pavanelliella scaphiocotylus sp. nov. is described from the nasal cavity of the Guatemalan chulin, Rhamdia guatemalensis (Heptapteridae), from Ixin-há Cenote, Yucatán, Mexico. The new species differs from its congener, Pavanelliella pavanellii, in possessing a well-developed haptor and peduncle, a coiled male copulatory organ comprising 5–6 counterclockwise rings, and a vaginal canal with 4–5 loops.
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