Two new species of Parapharyngodon (Oxyuroidea: Pharyngodonidae) from the enigmatic Bipes canaliculatus and Bipes tridactylus (Squamata: Bipedidae)

Abstract

TWO SPECIES OF PARAPHARYNGODON COLLECTED FROM BIPES CANALICULATUS AND BIPES TRIDACTYLUS ARE HEREIN DESCRIBED. PARAPHARYNGODON LAMOTHEI N. SP. WAS COLLECTED FROM THE 4-TOED WORM LIZARD BIPES CANALICULATUS FROM SOUTHERN MEXICO. IT IS UNIQUE IN POSSESSING 6 LIPS, A GUBERNACULUM, A FRINGED CLOACAL LIP, AND A SINGLE MEDIAL PAPILLA IN ADDITION TO 3 PAIRED PAPILLAE. PARAPHARYNGODON MAESTRO N. SP., WAS COLLECTED FROM THE 3-TOED WORM LIZARD BIPES TRIDACTYLUS, AND IT IS CHARACTERIZED BY HAVING 3 BILOBED LIPS, A SIMPLE CLOACA, A RELATIVELY LONG SPICULE, AND BY POSSESSING 3 PAIRS OF CAUDAL PAPILLAE. THESE ARE THE THIRD AND FOURTH SPECIES OF THE GENUS RECORDED IN MEXICO.