Gallinula galeata, Lichtenstein, 1818

Caballero-Viñas, Carmen, Sánchez-Nava, Petra & Salgado-Maldonado, Guillermo, 2019, Redescription and new records of Polymorphus trochus (Van Cleave, 1945) (Polymorphida: Polymorphidae), in Mexico, Zootaxa 4668 (2), pp. 296-300 : 297-300

Host: Gallinula galeata ( Gruiformes : Rallidae )

Site of infection: Ileum Locality: Laguna Chimaliapan (19º11’20’’N; 99º29’30’’W), State of Mexico, Mexico.

Collection date: February 2016 – April 2017.

Voucher: Helminthological Collection of the Instituto de Biologiìa, UNAM, Mexico City, Mexico (Cat. No. 10829)

Prevalence: 21.1/100 (21.1%).

Mean intensity (range): 4 (1–10).

Adult males (based on 4 individuals): Trunk 3.309 –4.194 (3.649) mm long by 0.803 –1.162 (1.001) mm wide. Neck 222–291 (266) long by 316–467 (380) wide. Proboscis 314–438 (391) long by 183–239 (221) wide. Length by width of hooks (from anterior to posterior) 28 x 8, 32 x 8, 36 x 9, 40 x 10, 39 x 10, 41 x 12, 38 x 12, 35 x 10, 33 x 8, 29 x 8, 30 x 7, 22 x 7; length by width of roots (from anterior to posterior) 11 x 4, 12 x 8, 13 x 8, 23 x 9, 17 x 8, 30 x 10, 32 x 3, 21 x 4, 11 x 4, 13 x 3, 10 x 4, 11 x 4. Proboscis receptacle 523–996 (810) long by 105–263 (216) wide. Lemnisci 670–1527 (1141) long by 62–187 (126) wide. Reproductive system 1.870 –3.338 (2.715) mm long, occupying 78%–82% (80%) of the trunk length. Anterior testis 441–569 (489) long by 299–378 (351) wide, posterior testis 503–588 (546) long by 331–412 (372) wide. Cement glands (4), 966–1439 (1,117) long by 58–108 (78) wide. Cement reservoir 325–1126 (744) long by 104–195 (149) wide. Everted bursa 178–342 (283) long by 286–316 (303) wide.

Adult females (based on 5 individuals; 3 were gravid but only one presented mature eggs): Trunk 4.320 –4.928 (4.707) mm long by 1.018 –1.342 (1.189) mm wide. Neck 476–598 (528) long by 531–578 (555) wide. Proboscis 516–594 (552) long by 391–427 (402) wide. Length by width of hooks (from anterior to posterior) 22 x 7, 31 x 9, 38 x 10, 40 x 11, 40 x 13, 41 x 15, 41 x 15, 41 x 13, 40 x 12, 40 x 12, 33 x 11, 29 x 11; length by width of roots (from anterior to posterior) 10 x 5, 13 x 6, 15 x 6, 21 x 7, 24 x 9, 24 x 8, 25 x 6, 22 x 5, 20 x 4, 17 x 5, 20 x 5, 15 x 4. Proboscis receptacle 1,084 –1,330 (1,203) long by 311–333 (323) wide. Lemnisci 1,094 –1,748 (1,312) long by 42–111 (77) ancho. Reproductive system 0.963 –1.284 (1.154) mm long, occupying 19%–28% (25%) of the trunk length. Uterine bell 241–361 (300) long by 81–187 (134) wide; uterus 282–2885 (1228) long. Vagina 339–755 (499) long. Eggs (based on one female) 71 long by 15 wide.