The Florida Ivory Millipede, Chicobolus spinigerus (Diplopoda: Spirobolidae): A Natural Intermediate Host of Macracanthorhynchus ingens (Acanthocephala: Oligacanthorhynchidae)

Abstract Eleven (55%) of 20 Chicobolus spinigerus (Florida Ivory Millipede) collected from Miami-Dade County, FL, were infected with 1–57 cystacanths of Macracanthorhynchus ingens, a common acanthocephalan of North American Procyon lotor (Raccoon), representing a new host record. The distribution of cystacanths among the millipedes exhibited the highly overdispersed negative binomial distribution that is characteristic of parasite populations.