mind controlling parasite

The microscopic larvae are ingested by their insect hosts and develop inside them into worms that can be three to four times longer than the host. [url=http://en.wikipedia.org/wiki/Spinochordodes_tellinii]Your text to link here...[/url] I remembered reading about this somewhere; perhaps some friendly biologist can suggest other candidates. There does seem to be commonality in themes referring to parasitical behaviour in the Prometheus bestiary. Whaddya reckon?