Photedes
Lederer, 1857
Species Guides
5- Photedes defecta(narrow-winged borer)
- Photedes enervata(many-lined cordgrass moth)
- Photedes includens(Included Cordgrass Borer Moth)
- Photedes inops(spartina borer moth)
- Photedes panatela(Northern Cordgrass Borer Moth)
Photedes is a of owlet moths in the Noctuidae, established by Lederer in 1857. The genus contains approximately 17 described distributed primarily across the Palearctic region, with some representation in North America. At least one species, Photedes minima (Small Dotted Buff), has been subject to genomic study, revealing a count of 31 (30 plus Z chromosome). Species in this genus are generally small to medium-sized associated with moist .
Pronunciation
How to pronounce Photedes: //fəˈtiːdiːz//
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Identification
-level identification within Photedes typically requires examination of genitalia and subtle wing pattern differences. Photedes minima shows : males are plain buff with faint dark dots, while females are smaller with more distinct markings and a darker area. Forewings range from pale ochreous to light brown; hindwings yellow-orange to greyish. Wingspan approximately 20–26 mm for P. minima. Distinguishing Photedes from related noctuid such as Xylena and Conistra may require dissection and reference to specialized keys.
Images
Habitat
Moist environments including marshes, damp woodlands, and wet meadows. availability is tied to the presence of larval plants, particularly grasses in wet or seasonally wet soils.
Distribution
Palearctic distribution extending from the Iberian Peninsula to western Russia; widespread across Britain and Ireland. Records also from Scandinavia (Denmark, Norway, Sweden) and North America (Vermont, United States).
Seasonality
active late June to August in a single (for P. minima). One per year.
Diet
Larvae feed on grass stems. Photedes minima has been observed feeding specifically on Deschampsia cespitosa (tufted hair-grass).
Host Associations
- Deschampsia cespitosa - larval tufted hair-grass; explicitly documented for P. minima
Life Cycle
One per year. laid near plants after mating. Larvae feed on grass stems, then enter over winter. occurs in an underground cocoon. emerge in summer.
Behavior
Strong reliance on moist environments, behaviorally tied to availability of larval plants in wet .
Similar Taxa
More Details
Genomic resources
Photedes minima sequenced: 694.66 Mb total assembly length, 99.95% scaffolded into 31 chromosomal pseudomolecules (30 + Z ), mitochondrial genome 15.38 kb. Specimen from Wytham Woods, Oxfordshire, UK.