Occidentalia
Dyar & Heinrich, 1927
Species Guides
1Occidentalia is a in the Crambidae, established by Harrison Gray Dyar Jr. and Carl Heinrich in 1927. The genus contains a single , Occidentalia comptulatalis, described by George Duryea Hulst in 1886. It is distributed across northern North America, with active in mid-summer and larvae specializing on Scirpus (bulrush) species.
Pronunciation
How to pronounce Occidentalia: //ˌɒk.sɪ.dɛnˈteɪ.li.ə//
These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.
Identification
As a , Occidentalia is distinguished from other Crambidae genera by the unique combination of traits exhibited by its sole , O. comptulatalis. The species has a wingspan of 23–26 mm. Specific diagnostic features separating it from related crambid genera are not documented in available sources.
Habitat
Associated with wetland environments supporting plants Scirpus acutus, Scirpus americanus, and Scirpus validus (bulrushes). These plants typically inhabit marshes, lake margins, and slow-moving water edges.
Distribution
Recorded from Alberta, Indiana, Maine, Manitoba, Minnesota, New York, Ontario, Quebec, Saskatchewan, and Vermont.
Seasonality
are active from mid-July to August in one per year.
Diet
Larvae feed on Scirpus acutus, Scirpus americanus, and Scirpus validus. feeding habits are not documented.
Host Associations
- Scirpus acutus - larval food plant
- Scirpus americanus - larval food plant
- Scirpus validus - larval food plant
Life Cycle
One per year. Larval development occurs on plants, with in mid-summer. Detailed stages are not documented.
Ecological Role
Larvae function as herbivores on emergent wetland vegetation. Specific ecological impacts or interactions are not documented.
Similar Taxa
- Other Crambidae generaOccidentalia is and distinguished at the level by the unique of O. comptulatalis; specific similar requiring differentiation are not identified in available sources.
More Details
Taxonomic history
The was described by Harrison Gray Dyar Jr. and Carl Heinrich in 1927, with the type originally described by Hulst in 1886 under a different genus (as Loxostege comptulatalis) before being transferred to Occidentalia.
Observations
The has 388 observations recorded on iNaturalist, indicating moderate detection frequency during its period.