Eupithecia sheppardata
McDunnough, 1938
Alder Looper
Eupithecia sheppardata is a small geometrid in the Geometridae, first described by James Halliday McDunnough in 1938. It belongs to the large Eupithecia, commonly known as 'pugs,' characterized by narrow wings and a distinctive resting posture. The has been documented as a visitor to apple flowers, contributing to pollination services. It occurs in northeastern North America.
Pronunciation
How to pronounce Eupithecia sheppardata: /juːˈpɪ.θiːs.jə ˌʃɛp.ərˈdɑː.tə/
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Identification
Members of Eupithecia are readily recognized by their narrow wings and unique resting posture. Positive identification to level typically requires examination of genitalia characters. Distinguished from other geometrid moths by the 'pug' ; species-level determination within Eupithecia requires expert analysis.
Habitat
Associated with alder ( 'Alder Looper' suggests plant relationship). Occurs in mixed forest environments. Specific microhabitat requirements not well documented.
Distribution
North America: documented from New Brunswick, Ontario, Quebec, Maine, New York, Vermont, Alberta, and Saskatchewan.
Host Associations
- Alder - larval Implied by 'Alder Looper'
Behavior
. have been observed visiting apple flowers at night, indicating potential pollination . Attracted to lights.
Ecological Role
Documented as a of apple flowers. Contributes to nighttime pollination services in agricultural and natural . Larval stage likely functions as a foliage feeder on alder.
Human Relevance
Recognized as one of several contributing to apple pollination, demonstrating that moths provide valuable services in fruit production.
Similar Taxa
- Other Eupithecia speciesAll share narrow wings and 'pug' resting posture; -level identification requires genitalia examination
- Other GeometridaeEupithecia distinguished by characteristic narrow-winged and resting posture
More Details
Pollination significance
A 2021 study in the Journal of Economic Entomology documented Eupithecia visiting apple flowers at night, contributing to pollination services comparable to daytime in seed set quality.