A new rhabdiasid species from Craugastor occidentalis (Anura: Brachycephalidae) from Sierra de Manantlán, Jalisco, Mexico

Abstract

RHABDIAS MANANTLANENSIS N. SP., PARASITE OF THE LUNGS OF CRAUGASTOR OCCIDENTALIS IS ILLUSTRATED AND DESCRIBED. RHABDIAS MANANTLANENSIS DIFFERS FROM RELATED SPECIES IN THE GENUS BY THE COMBINATION OF THE FOLLOWING CHARACTERS: ELONGATED BODY, CUTICLE SLIGHTLY SWOLLEN (THIN AND SMOOTH), 6 WEAKLY DEVELOPED LIPS (4 SUBMEDIAN + 2 LATERAL), LOCALIZATION OF NERVE RING AT 193-244 (220) œM FROM ANTERIOR END, MUSCULAR CORPUS SLIGHTLY INFL ATED, ESOPHAGUS LENGTH/ BODY LENGTH RATIO 5.11”6.57 (5.79%), TAIL RELATIVELY SMALL, CONICAL AND WITH SHARP TERMINAL POINT, TAIL LENGTH/ BODY LENGTH RATIO 1.48-3.27 (2.48) %, SLIGHTLY PRE-EQUATORIAL VULVA (VULVA LENGTH / BODY LENGTH RATIO 41.66-51.59 [47.74] %), AND CUP-SHAPE BUCCAL CAPSULE (11-19 [13] X 19-27 [21]). THIS IS THE SEVENTEENTH SPECIES OF THE GENUS RHABDIAS DESCRIBED IN THE NEOTROPICAL REALM AND THE THIRD DESCRIBED IN THE SIERRA MADRE DEL SUR, MEXICO.