Marmara auratella
Encyclopedia
Marmara auratella is a moth
Moth
A moth is an insect closely related to the butterfly, both being of the order Lepidoptera. Moths form the majority of this order; there are thought to be 150,000 to 250,000 different species of moth , with thousands of species yet to be described...

 of the Gracillariidae
Gracillariidae
Gracillariidae is an important family of insects in the order Lepidoptera and the principal family of leaf miners that includes several economic, horticultural or recently invasive pest species such as the horse-chestnut leaf miner, Cameraria ohridella....

 family. It is known from the United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 (Ohio and Maine).

The larva
Larva
A larva is a distinct juvenile form many animals undergo before metamorphosis into adults. Animals with indirect development such as insects, amphibians, or cnidarians typically have a larval phase of their life cycle...

e feed on Dahlia
Dahlia
Dahlia is a genus of bushy, tuberous, perennial plants native to Mexico, Central America, and Colombia. There are at least 36 species of dahlia, some like D. imperialis up to 10 metres tall. Dahlia hybrids are commonly grown as garden plants...

species and Rudbeckia laciniata
Rudbeckia laciniata
The Cutleaf, Cutleaf Coneflower, Goldenglow, Green-headed Coneflower, Tall Coneflower or, Thimbleweed is a large perennial forb, native to Eastern North America, most often found in flood plains and moist soils. This plant grows up to 3 meters tall, with slightly glaucous leaves, and composite...

. They mine the stem of their host plant. The mine has the form of a long serpentine mine on the stem.
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