Taxonomy
- Kingdom: Animalia
- Phylum: Arthropoda
- Class: Insecta
- Order: Lepidoptera
- Family: Crambidae
- Genus: Udea
- Species: U. stationalis
Authority
Udea stationalis was first described by Hiroshi Yamanaka in 2000 (original description published in Tinea 15(2): 131–138).
Synonymy
No synonyms are recorded in major taxonomic databases (e.g., GlobIZ, the Global Lepidoptera Names Index).
Distribution and Habitat
The species is known from the Japanese islands, with confirmed records from Honshū and Kyūshū. Specimens have been collected in low‑elevation forested areas and near agricultural fields where host plants are present.
Morphology
Adults of U. stationalis have a wingspan of approximately 18–22 mm. The forewings are pale brown with distinct darker transverse lines and a characteristic discal spot; the hindwings are lighter with less pronounced markings. Detailed morphological descriptions, including genitalia examinations, are provided in the original description (Yamanaka 2000).
Biology and Ecology
The larval host plants of U. stationalis have not been conclusively identified; however, related Udea species commonly feed on herbaceous plants in the families Asteraceae and Brassicaceae. Adults are nocturnal and are attracted to light, a behavior typical of many Crambidae.
Conservation Status
The species has not been evaluated by the International Union for Conservation of Nature (IUCN). No specific threats have been reported, and it is not listed in regional conservation assessments.
References
- Yamanaka, H. (2000). "A new species of Udea (Lepidoptera, Pyralidae) from Japan." Tinea 15(2): 131–138.
- Nuss, M., et al. (2003–2023). Global Information System on Pyraloidea (GlobIZ). www.globiz.pyraloidea.org.
- Savela, M. (2023). "Udea Hübner, [1825]" – Lepidoptera and Some Other Life Forms. https://www.funet.fi/pub/sci/bio/life/insecta/lepidoptera/ditrysia/pyraloidea/crambidae/pyraustinae/udea/
Note: While the taxonomic placement and original description of Udea stationalis are well documented, detailed information on its life history, larval host plants, and population dynamics remains limited.