What is "thompsonia"

Thompsonia is a genus of barnacles which has evolved into an endoparasite of other crustaceans, including crabs and snapping shrimp. It spreads through the host's body as a network of threads, and produces many egg capsules which emerge through joints in the host's shell.

Thompsonia may refer to either of these taxa:-

• Thompsonia, in the plant family Passifloraceae
• Thompsonia, a parasitic barnacle