Mediorhynchus mattei
Mediorhynchus mattei is a species of acanthocephalan, a parasitic worm, found in the digestive tract of a bird, the northern red-billed hornbill Tockus erythrorhynchus. Male worms are 2-3 cm in length, females are 3-11 cm in length. It was described in 1982; its name honours French zoologist Xavier Mattei.