Loxostege ephippialis
Zetterstedt, 1839
Loxostege ephippialis is a small in the Crambidae, first described by Johan Wilhelm Zetterstedt in 1839. It exhibits a Holarctic distribution, occurring across northern Europe and North America. The is known to be a significant for the mason wasp Euodynerus annulatus, which provisions its nests with paralyzed caterpillars of this moth. are active during early summer in both European and North American .
Pronunciation
How to pronounce Loxostege ephippialis: /lɒkˈsɒstɛdʒ ɛˌfɪpiˈælɪs/
These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.
Identification
The bluish-gray ground color of the wings distinguishes this from many other Loxostege species, which often exhibit more brownish or yellowish tones. The specific epithet 'ephippialis' (saddle-shaped) may refer to wing pattern elements, though detailed pattern description is not available in sources. Final identification requires examination of genitalia or comparison with closely related species in the .
Habitat
Specific preferences are not documented, but the occurs in regions including and montane areas of northern Europe and western North America. Its association with alfalfa and other herbaceous vegetation is implied by its role as a for that hunt in agricultural and open field settings.
Distribution
Norway, Sweden, Finland, Russia; North America from Labrador west to Northwest Territories and Rocky Mountains, south to Wyoming and Colorado
Seasonality
are on wing from June to mid-July in both North America and Europe
Diet
Larval feeding habits are not directly documented, but related in the Loxostege are known to feed on herbaceous plants including alfalfa and other legumes. The species is referred to as part of the 'Alfalfa Webworm' complex in some contexts.
Life Cycle
Complete with , larva, pupa, and stages. Specific details of development duration and stage are not documented.
Ecological Role
Significant prey for . Recorded as a major for Euodynerus annulatus, a mason wasp that provisions nests with paralyzed caterpillars. This interaction makes the an important component of in open where both species co-occur.
Human Relevance
Implicated as a potential agricultural pest through its association with the 'Alfalfa Webworm' complex, though specific economic impact of this versus related Loxostege species is not separately quantified. The species serves as a research subject in studies of - relationships.
Similar Taxa
- Other Loxostege speciesMany congeneric share similar size and general ; L. ephippialis is distinguished by its bluish-gray coloration and Holarctic distribution pattern
- Alfalfa Webworm (Loxostege cereralis)Closely related and ecologically similar; caterpillars of both are hunted by the same and may co-occur in agricultural settings
More Details
Taxonomic history
Originally described as Botys ephippialis by Zetterstedt in 1839, later transferred to Loxostege
Host-parasitoid relationship
Rau and Rau (1918) documented caterpillars of Loxostege as major for Euodynerus annulatus, specifically noting their abundance along the Colorado Front Range where this study was conducted