New records of helminths of Sceloporuspyrocephalus Cope (Squamata, Phrynosomatidae) from Guerrero and Michoacan, Mexico, with the description of a new species of Thubunaea Seurat, 1914 (Nematoda, Physalopteridae) Author Oca, Edgar Uriel Garduno-Montes de Author Lopez-Caballero, Jorge D. Author Mata-Lopez, Rosario text ZooKeys 2017 716 43 62 http://dx.doi.org/10.3897/zookeys.716.13724 journal article http://dx.doi.org/10.3897/zookeys.716.13724 1313-2970-716-43 C4763F6310DD493889D26A45E9E5819E C4763F6310DD493889D26A45E9E5819E Mesocestoides sp. Specimens deposited. CNHE 9464, 9465. Other hosts. Sceloporus jarrovi Cope in Chihuahua, Morelos and San Luis Potosi ( Goldberg et al. 1996 ); S. grammicus Wiegmann in Mexico City ( Goldberg et al. 2003 ); S. torquatus Wiegmann in Queretaro ( Goldberg et al. 2003 ). Remarks. Four species of Mesocestoides are distributed in Mexico in carnivorous mammals: M. bassarisci MacCallum, 1921 in Bassariscus astutus Lichtenstein ( Procyonidae ) and M. lineatus (Goeze, 1782) in Mephitis macroura Lichtenstein ( Mephitidae ), both from Guerrero; M. variabilis Mueller, 1928 and M. vogae Etges, 1991 in Canis lupus familiaris Linnaeus ( Canidae ) from Mexico City ( Paredes-Leon et al. 2008 ). Unfortunately, the specimens found in S. pyrocephalus could not be identified to species level because they were at the tetratiridium larval stage. Molecular analyses are needed to determinate the species identity of the larvae found in reptilian hosts, which serve as intermediate hosts ( Santoro et al. 2012 ).