Carolinensis peromysci (Durette-Desset)

(= Boreostrongylus peromysci Durette-Desset)

Site of infection: Small intestine

Host: Peromyscus yucatanicus

Locality: Paraíso

Prevalence and mean intensity (range): 20% (1/5) and 1 (1)

Specimens deposited: MLP-He 7440

Comments: The infected mouse harbored only one female specimen. The morphological and metrical characteristics observed in our material agreed with the original description of females given by Durette-Desset (1974) for the parasites found in Podomys floridanus (Chapman) and Peromyscus gossypinus (Le Conte), i.e. synlophe with 16 ridges at midbody and morphology of the posterior end, including the presence of a wide cuticular fold partially covering the posterior end and leaving free the tail sensu stricto; conical tail, without a mucron, and tail length about half length of the vulva-posterior end distance.

Four species of Carolinensis have been reported in México: Carolinensis carolinensis (Dikmans) from Peromyscus maniculatus (Wagner) in Hidalgo (Pulido-Flores et al. 2005), Carolinensis huehuetlana Falcón-Ordaz & Sanabria Espinoza, from P. difficilis in Hidalgo (Falcon-Ordaz & Sanabria Espinoza 1996) and Peromyscus mexicanus (de Saussure) in Hidalgo (Falcón-Ordaz et al. 2013), Carolinensis perezponcedeleoni Jiménez from Nyctomys sumichrasti (de Saussure) in Veracruz (Jiménez 2012), and Carolinensis petteri (Denke) from P. mexicanus in Veracruz (Denke 1977). This is the first report of C. peromysci in México and of Carolinensis in P. yucatanicus .