During the summer of 1975, an unknown larval pyralid was found living under the loose outer back of domestic grape (Vitis vinifera L.) in southwestern Michigan. Subsequent rearing enabled it to be identified as Macrotheca unipuncta Dyar. Following is a description of the larval and pupal stages of the insect, and a discussion of its bionomics.
"Life History and Description of the Immature Stages of Macrotheca Unipuncta (Lepidoptera: Pyralidae),"
The Great Lakes Entomologist, vol 10
Available at: https://scholar.valpo.edu/tgle/vol10/iss4/6