Anenterotrema cf. hastati Cacique, Cruces & Chero

Moguel-Chin, Wilson I., Digiani, María Celina, Macswiney, M. Cristina, Ortega, Jorge, Ospina-Garcés, Sandra M., García-Prieto, Luis, Canché-Pool, Elsy B., Robles, María Del Rosario, Ávila-López, Mariana B., Chan-Casanova, Anyela Jackelin & Panti-May, Jesús Alonso, 2025, Intestinal helminths of bats in the States of Nayarit and Veracruz, Mexico, with redescription of Bidigiticauda vivipara Chitwood, Zootaxa 5566 (2), pp. 329-346 : 332-333

Anenterotrema cf. hastati Cacique, Cruces & Chero

Site of infection: Small intestine

Host species: Bauerus dubiaquercus

Locality: Ejido Adolfo Ruiz Cortines (18°31’53.8” N, 95°08’01.7” W, 1061 MASL), Tuxtlas, Veracruz Prevalence and intensity: 50% (1/2) and 151

Specimen deposited: CNHE 12134

Comments: Based on five trematodes. Body pyriform, minute, 225 (165–330) long and 123 (105–151) wide ( Figure 2A ). Tegument unarmed. Oral sucker spherical, subterminal, 50 (50–51) long by 52 (50–56) wide. Ventral sucker in middle third of body, 55 (50–60) long by 69 (62–74) wide. Pharynx, oesophagus, and intestinal caeca not observed. Gonads in anterior half of hindbody. Testes postero-lateral to ventral sucker; right testis 42 long by 70 wide, left testis 55 long by 62 wide. Ovary median, post-testicular, 32 long by 53 wide. Vitellaria in hindbody, concentrated in lateral region, occupying almost entire left testis. Eggs 27 (25–30) long by 13 (11–15) wide.

The closest species in morphology is A. hastati described from Phyllostomus hastatus (Pallas) in Peru. However, we were unable to observe the characteristic unicellular glands located anterolateral to cirrus sac due to the poor condition of preservation of our specimens. The remaining species, Anenterotrema liliputianum (Travassos) , Anenterotrema auritum (Stunkard) , Anenterotrema eduardocaballeroi (Freitas) , Anenterotrema freitasi (Caballero) , Anenterotrema mesolecitha (Marshall & Miller) , Anenterotrema iannaconei (Achatz, Cardenaz-Callirgos & Tkach), Anenterotrema megacetabulum (Fernandes, Santos, Melo, Achatz, Greiman, Bonilla & Tkach) , Anenterotrema paramegacetabulum (Cacique, Cruces & Chero) , Anenterotrema kawsayense (Cacique, Cruces & Chero) , Anenterotrema stunkardi (Caballero & Grocott) , and Anenterotrema peruense (Cacique, Cruces & Chero) , differ in shape and size of oral sucker, body length, and position of gonads ( Cacique et al. 2023). This is the first record of A. cf. hastati in Mexico.

Figures

FIGURE 2. Helminths of bats from Nayarit and Veracruz, Mexico. A) Adult of Anenterotrema cf. hastati, ventral view. B) Adult of Urotrema scabridum, ventral view. C) Scolex of Vampirolepis macroti, apical view. D) Scolex of Vampirolepis sp. (1), apical view. E) Scolex of Vampirolepis sp. (2), lateral view. F) Male posterior extremity of Capillariidae gen. sp., ventral view. G) Esophagus-intestine junction and vulva of female Capillariidae gen. sp., lateral view. Scale bars: A, C, D, E = 100 μm; B = 1000 μm; F = 10 μm; G = 65 μm.