Otobius megnini (Dugès, 1884)

ND: ND, ND (Chavarría 1941); ND, ears of animals (Bishopp & Trembley 1945). ND, ears of domestic animals and man (Hoffmann 1961). AGUASCALIENTES: Jesús María, ears of mules (Hoffmann 1962). BAJA CALIFORNIA: La Acequia, ears of cattle (Hoffmann 1962) (CNAC001982); Los Pozos, ears of cattle (Hoffmann 1962) (CNAC001981). CIUDAD DE MÉXICO: ND, cows, horses (Macías-Valadez 1923); Colonia Santo Tomás, ears of cattle (Hoffmann 1962); Iztacalco, ears of cattle (Hoffmann 1962); Azcapotzalco, ears of a cat (Hoffmann 1962); Xochimilco, ears of cattle (Hoffmann 1962); Los Morales, ears of dogs (Hoffmann 1962); Castillo de Chapultepec, ears of dogs (Hoffmann 1962); Tacuba, ears of dogs (Hoffmann 1962); ND, on stables (Carrillo et al. 1966). CHIHUAHUA: ND, cows, horses (Macías-Valadez 1923); Chihuahua, ears of cattle (Hoffmann 1962); Rosales, Camargo, ears of cattle (Hoffmann 1962); Bocoyna, ears of cattle (Hoffmann 1962). COAHUILA: cows, horses (Macías-Valadez 1923); La Flor de Jimulco (Región Lagunera), sheep (Ortiz Mariotte, 1945); Torreón (Región Lagunera), cows (Ortiz Mariotte 1945); Jalisco (Región Lagunera), dog (Ortiz Mariotte 1945); Región Lagunera, ND (Silva-Goytia & Elizondo 1952); Mariano Escobedo, ears of cattle (Hoffmann 1962). COLIMA: Manzanillo, ears of cattle (Hoffmann 1962). DURANGO: Región Lagunera, ND, ND (Silva-Goytia & Elizondo 1952); San Pedro del Gallo, ears of cattle (Hoffmann 1962); Gómez Palacio, ears of a dog (González-Alvarez et al. 2018). ESTADO DE MÉXICO: Texcoco, walls of a cowshed (Gibson & Carrillo 1959). Valle de México, ears of cattle (Hoffmann 1962) (CNAC001984); Santa Clara, ears of cattle (Hoffmann 1962); Pueblo Nuevo, ears of cattle (Hoffmann 1962); Tulpetlac, ears of cattle (Hoffmann 1962); Santa María, ears of cattle (Hoffmann 1962); Temascalapa, ears of cattle (Hoffmann 1962); Acambay, ears of cattle (Hoffmann 1962); Texcoco, ears of cattle (Hoffmann 1962); San Mateo Atenco, ears of cattle (Hoffmann 1962); Chimalhuacán, ears of cattle (Hoffmann 1962) (CNAC001978); Carrillo et al. 1966). GUANAJUATO: ND, horses, donkeys, oxen, man (Dugès 1884; Nuttall et al. 1908) (described in both references as Argas megnini); Apaseo, ears of cattle (Hoffmann 1962); Celaya, ears of cattle (Hoffmann 1962). GUERRERO: Huitzuco, ears of cattle (Hoffmann 1962); Amealco, ears of cattle (Hoffmann 1962). HIDALGO: Zimapán, ears of cattle (Hoffmann 1962); Singuilucan, ears of cattle (Hoffmann 1962); Tepeji del Río, ears of cattle (Hoffmann 1962); Chapantongo, ears of cattle (Hoffmann 1962) (CNAC001983); Carrillo et al. 1966). JALISCO: Amatitlán, ears of cattle (Hoffmann 1962); San Juan de los Lagos, ears of cattle (Hoffmann 1962); Ahualulco, ears of cattle (Hoffmann 1962); Nazareno, ears of donkeys (Hoffmann 1962). MI- CHOACÁN: Morelia, cows (Bustamante et al. 1947); Ario de Rosales, cows (Bustamante et al. 1947); Pátzcuaro, cows (Bustamante et al. 1947); Zamora, cows (Bustamante et al. 1947); Coalcomán, cows (Bustamante et al. 1947); Uruapan, cows (Bustamante et al. 1947); Pajacuarán, ears of cattle (Hoffmann 1962); Jacona, ears of cattle (Hoffmann 1962). MORELOS: Ecatepec, ears of cattle (Hoffmann 1962). NUEVO LEÓN: Ojo de Agua, on the ground (Cooley & Kohls 1944); ND, horses (Zarate-Ramos et al. 2014). OAXACA: Tacachi, Huajuapan, deer (Hoffmann 1962) (CNAC001980). PUEBLA: ND, ND (Hoffmann 1930); Puebla, ears of cattle (Gibson & Carrillo 1959); Amalucan, ears of goats (Hoffmann 1962); Tlahuapan, ears of sheep and cattle (Hoffmann 1962). QUINTANA ROO: Nuevo Tabasco, Bacalar, ears of Tapirus bairdii (Pérez & González 2018) . SINALOA: Las Cañas, ears of cattle (Hoffmann 1962); El Fuerte, ears of dogs (Hoffmann 1962). SONORA: ND, ND, cattle (Cooley & Kohls 1944); Tonichi, ears of dogs (Hoffmann 1962); Bacoachi, ears of dogs (Hoffmann 1962); Los Molinos, Altar, ears of dogs (Hoffmann 1962); Río Sonora, Hermosillo, ears of cattle (Hoffmann 1962) (CNAC001989). TLAXCALA: Contla, ears of cattle (Hoffmann 1962).

Notes: Hoffmann (1930) believed this species to occur in Puebla, in arid and semi-arid areas of central Mexico, and along the Pacific Coast, parasitizing humans, cattle, horses, donkeys, sheep, cats, dogs, deer and other mammals. Chavarría (1941) and Hoffmann & López-Campos (2000) mentioned that Ot. megnini is common and distributed throughout Mexico, where it is associated with humans and occurs in the ears of domestic animals.