Taxonomy
- Kingdom: Animalia
- Phylum: Arthropoda
- Class: Insecta
- Order: Lepidoptera
- Family: Crambidae
- Subfamily: Pyraustinae
- Genus: Loxostege
- Species: Loxostege anartalis (Grote, 1878)
Synonyms
- Pyrausta anartalis Grote, 1878
Description
Loxostege anartalis is a medium‑sized moth with a wingspan of approximately 20–26 mm. The forewings are generally gray‑brown to brownish‑black, marked with vague darker transverse lines and a subtle discal spot. Hindwings are lighter, often pale gray or whitish, and may display faint marginal shading.
Distribution
The species occurs in western North America. Recorded U.S. states include California, Oregon, Washington, Nevada, Arizona, and Idaho. In Canada, it has been documented in British Columbia and Alberta. Occurrences are primarily in arid to semi‑arid habitats, including desert margins, dry grasslands, and open shrubsteppe.
Life cycle and ecology
- Flight period: Adults have been observed on the wing from late spring through early autumn, with peak activity typically from June to September, depending on latitude and local climate.
- Larval host plants: Specific larval host records are limited. Available data suggest that larvae feed on herbaceous plants, commonly within the families Asteraceae and Poaceae, though definitive host plant associations remain insufficiently documented.
- Behavior: Adults are nocturnal and are attracted to light sources.
Conservation status
The species is not listed as threatened or endangered in North America and is generally considered common within its suitable habitat range.
References
- Moth Photographers Group (Mississippi State University) – Species page for Loxostege anartalis.
- BugGuide.net – Species information and photographic records.
- GlobIZ (Global Information System on Pyraloidea) – Taxonomic database.
Note: While the general biology and distribution of Loxostege anartalis are well documented, detailed aspects of its larval ecology and precise host‑plant relationships remain incompletely resolved in the published literature.
