Aethes spartinana
Barnes & McDunnough, 1916
Aethes spartinana is a small tortricid first described in 1916. It is associated with prairie cordgrass (Spartina pectinata) throughout its . The has a distinctive larval habit of boring into grass inflorescences to feed on internal florets. It is recorded from scattered localities across the north-central and northeastern United States, with additional Canadian records.
Pronunciation
How to pronounce Aethes spartinana: //ˈiː.θiːz ˌspɑːr.tɪˈnɑː.nə//
These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.
Identification
Small size (wingspan under 25 mm) and association with Spartina pectinata may aid field recognition. Specific diagnostic features separating it from congeneric are not documented in the provided sources. Genitalia dissection or molecular methods likely required for definitive identification.
Habitat
Prairie and wetland where the larval plant Spartina pectinata (prairie cordgrass) occurs. The host grows in moist soils, including wet prairies, marshes, and stream margins.
Distribution
North America: recorded from Illinois, Indiana, Iowa, Maine, Massachusetts, South Dakota (United States), and Manitoba (Canada).
Seasonality
recorded on wing in January and from July to September. The January record may represent anomalous activity or misidentification; the summer–autumn period appears more consistent.
Diet
Larvae feed on Spartina pectinata. They bore through the glumes and consume the florets inside the inflorescence. feeding habits are not recorded.
Host Associations
- Spartina pectinata - larval Prairie cordgrass; larvae bore into glumes and feed on internal florets
Life Cycle
Larval development occurs within Spartina pectinata inflorescences. Specific details on placement, site, and number of per year are not recorded.
Behavior
Larvae exhibit concealed feeding , boring into grass inflorescences rather than feeding externally on foliage.
Ecological Role
Herbivore specializing on Spartina pectinata; may contribute to seed in prairie cordgrass . Specific impacts on plant or function are not quantified.
Human Relevance
No documented economic importance. Potential interest for conservation of prairie and associated insects.
Similar Taxa
- Aethes speciesCongeneric are morphologically similar and require dissection or genitalia examination for reliable identification; many share small size and tortricid wing posture.
- Other Tortricidae associated with grassesMultiple tortricid feed on Poaceae; larval feeding inside glumes is relatively specialized but not unique to this species.
More Details
Nomenclature
Authorship properly cited as (Barnes & McDunnough, 1916). The epithet 'spartinana' directly references the Spartina.
Conservation status
Not formally assessed. The specialized association with prairie cordgrass suggests potential vulnerability to prairie loss and wetland drainage, though trends are unknown.