Lernaea cyprinacea

Lernaea cyprinacea from Blackstripe Topminnow (Fundulus notatus) from Yashau Creek in McCurtain County, Oklahoma: A) L. cyprinacea attached to pectoral fin of host (arrow), B) Female parasite attached to anal fin (arrow), C) Close-up of paired egg sacs (arrows), D) Individual L. cyprinacea removed from host showing pregenital prominence (arrow). Scale bars = 1.0 mm.

Photos by Dr. Chris T. McAllister