The myco prefix in biology refers to anything related to fungi, for example the study of fungi is mycology. Nid, nidae, id, or idae refers, in zoology, to the class or family to which a species belongs. In this case myconid can mean of the fungi class.
Usage
See Special:Whatlinkshere/Etymology:Myco for a list of articles using this term.
This is an etymology page: a page detailing the origins of terminology used in the series in regards to real world culture and history.