Trichuris silviae Panti-May & Robles

Site of infection: Caecum

Host species: Heteromys gaumeri

Localities: Hobonil ranch, Molas farm, Dzununcan farm, San Francisco cattle ranch, Santa Cruz cattle ranch, Vallazoo, Aak ecological park, Papam ranch, Kuncheil cattle ranch (Yucatan), Ich ha lol xaan ecological park, Zoh Laguna community (Campeche), Jolie Jungle eco-hotel, and David Gustavo community (Quintana Roo)

Specimens deposited: CNHE 11978‒11989

GenBank accession numbers: OR271656‒ OR271660

Comments: The specimens examined in this study had characteristics described by Panti-May & Robles (2016) of whipworms from H. gaumeri, i.e., males with spicular tube; spicule 1020–1762 long; proximal cloacal tube 850– 1925 long, united laterally to a distal cloacal tube 412– 855 long; cylindrical (or slightly campanulate at apical end; Figure 4A) and spiny spicular sheath; females with non-protrusive vulva and eggs 52–60 long by 28–32 wide.

Trichuris silviae has been reported from H. gaumeri in Merida, Tzucacab (Panti-May & Robles 2016) and Xkalakdzonot (Panti-May et al. 2018), Yucatan. These new records expand the geographical distribution of Tr. silviae to Campeche and Quintana Roo.