Nasusbilharzia, Flores & Viozzi & Casalins & Loker & Brant, 2021

Flores, Verónica, Viozzi, Gustavo, Casalins, Laura, Loker, Eric Samuel & Brant, Sara Vanessa, 2021, A new schistosome (Digenea: Schistosomatidae) from the nasal tissue of South America black-necked swans, Cygnus melancoryphus (Anatidae) and the endemic pulmonate snail Chilina gibbosa, Zootaxa 4948 (3), pp. 404-418 : 406-409

Nasusbilharzia n. gen.

Type species: Nasusbilharzia melancorhypha n. sp.

Etymology: The prefix “ nasus” come from the Latin and refers to the site of infection: the nasal tissue. The suffix “bilharzia” is another name describing a schistosome.

Diagnosis: Plathyhelminthes; Trematoda; Digenea; Strigeidida ; Schistosomatoidea; Schistosomatidae ; Schistosmatinae. Long filamentous worms, somewhat flattened dorso-ventrally. Posterior end of body with blunt termination, not wider than any other part of the body. Oral sucker and ventral sucker present and well developed. Oral sucker terminal. Ventral sucker larger than oral sucker, retractable. Esophagus bifurcating at level of anterior border of ventral sucker. Gynaecophoric canal well-developed starting some distance posterior to ventral sucker. Testes numerous, starting in anterior third of body, posterior to gynaecophoric canal. Cirrus sac present, containing an armed cirrus. Genital pore at anterior end of gynaecophoric canal. Eggs elongated with an asymmetrical median bulge, with slender and curved process in one end.