Trichuris muris (Schrank)

(= Trichocephalus muris Schrank; = Mastigodes muris (Schrank) Zeder,; = Trichocephalus nodosus Rudolphi)

Site of infection: Caecum

Host: Mus musculus

Locality: Paraíso

Prevalence and mean intensity (range): 15.1% (24/159) and 3 (1–9)

Specimens deposited: MLP-He 7427 and CNHE 10703

Comments: The characteristics observed in the specimens of the present material agreed with those described by Hall (1916) and Feliu et al. (2000), i.e. males with spicular tube; spicule 721–776 long; proximal cloacal tube (158–221) wider than the distal cloacal tube (75–104); cylindrical spicular sheath or with distal spherical bulge and spiny; females with non-protrusive vulva; and eggs 57–63 long by 30–32 wide.

In México, T. muris has been recorded from M. musculus in Hidalgo (Pulido-Flores et al. 2005) and Tabasco (Cigarroa-Toledo et al. 2017), R. rattus in México City (García-Prieto et al. 2012), R. norvegicus in México City (Zerecero 1943) and Tabasco (Cigarroa-Toledo et al. 2017), and H. irroratus in Morelos (Eslava-Araujo 2005).

In Yucatán, this species has been previously reported from M. musculus in three localities in Mérida and Opichén (Panti-May et al. 2015, 2017).