Stem miner etc. (Lepidoptera: Gracillariidae) in Arnoglossum
| Record no.: | 0076, 0079 |
|---|---|
| Feeding guild: | Stem miner, petiole miner |
| Taxonomy: | Lepidoptera: Gracillariidae: Marmara sp. |
| Stages observed: | trace, larva, pupa, adult |
| Hosts in Arnoglossum: | A. plantagineum (prairie indian-plantain); A. ?reniforme (indian-plantain) |
I located an old, abandoned mine on a senescent stem of A. ?reniforme in November 2017, and active mines on leaf petioles and stems of A. plantagineum in early July 2018. The A. plantagineum mines were of the typical Marmara form, long, winding, and linear with a central frass line. In mid- to late July, a mature larva exited one of the A. plantagineum mines and spun a cocoon festooned with bubbles on the side of the rearing container. The adult emerged by mid-August.
Page created: February 10, 2026. Last update: none