The first step is to determine the logical relationship between the stem and the question.

"Cuckoo" is also called "Zigui", which belongs to the same relationship, while "Cuckoo" belongs to birds and is completely different from "mammal".

The second step is to identify the options.

Item A: "Coffee beans" and "cocoa beans" belong to a parallel relationship and are excluded;

Item B: "Pine tree" and "cypress tree" belong to a parallel relationship and are excluded;

Item C: "Cockroach" is also called "Xiao Qiang", and they belong to the same relationship, while "Cockroach" and "Flat Animal" belong to the same relationship, which accords with the logical relationship of the topic.

Item D: "Folium Artemisiae Argyi" and "Artemisia argyi" belong to the same relationship, but "Folium Artemisiae Argyi" belongs to "angiosperms", and they belong to the species relationship in the inclusion relationship, so they are excluded.

Therefore, choose the c option.