Prosthogonimus cuneatus (Rudolphi, 1809)

Syrota, Ya. Yu., Korol, E. M. & Kuzmin, Yu. I., 2020, New Records Of Helminths Of The Corncrake, Crex Crex (Aves, Rallidae) From Ukraine, Zoodiversity 54 (1), pp. 11-16 : 12-13

Prosthogonimus cuneatus (Rudolphi, 1809)

Two specimens, one adult and one immature, were collected from the bursa of Fabricius of one bird.

L o c a l i t y: Horodnia District (Chernihiv Region).

Description of an adult specimen. Body oval ( fig. 1 , C), 2,072 long, with maximum width 752 atlevel of ovary. Oral sucker subspherical, 191×212. Ventral sucker 351×360. Distance from anterior end of body to centre of ventral sucker 930. Pharynx well developed, oval 105×96. Oesophagus short, 120–190 long. Testes elongate-oval. Size of right testis 200×96, size of left testis 198×90. Cirrus sac 220×44. Ovary 220×300. Ventral sucker slightly overlapping ovary anteriorly. Loops of uteri extending from posterior edge of ventral sucker to posterior end of body. Vitellarium at lateral margins of body. Anterior border of vitellarium at level of posterior edge of ventral sucker, posterior border of vitellarium posterior to posterior edge of testes. Eggs oval, numerous, 23–25× 14–15 in size.

Description of an immature specimen. Body pear-shaped, 1,425 long, with maximum width 580 at level of testes. Size of oral sucker 168×160, size of ventral sucker 265×260. Pharynx 55×35. Distance from anterior end of body to centre of ventral sucker 660. Testes round. Right testis 148×150, left testis 150×153. Ventral sucker partly covering anterior part of ovary. Ovary 147×178. Vitellarium undeveloped.

Figures

Fig. 1. General view of the trematodes found in the corncrake in Ukraine: Brachylaima fuscata (A), Prosthogonimus ovatus (B), Prosthogonimus cuneatus (C). Scale bars 500 µm.