Ophiomyia osmorhizae

Identification requires examination of adult genitalia and larval mine characteristics. The specific association with Osmorhiza host plants provides a field clue. Adults are small, grayish flies typical of the family Agromyzidae, with reduced wing venation and a rounded head. Definitive identification relies on the original species description by Eiseman & Lonsdale (2019).

Associated with habitats supporting host plants in the genus Osmorhiza, which typically occur in moist, shaded woodlands and forest edges.

Known from observations in eastern North America; precise range boundaries remain undocumented due to recent description and limited survey effort.

Larval feeding creates leaf mines in foliage of Osmorhiza species; adult feeding habits unknown.

• Osmorhiza - obligate larval hostGenus of woodland herbs in family Apiaceae; specific host species not definitively established

Larval development occurs within leaf tissue, forming internal mines. Pupation likely occurs within the mine or in soil, following the general pattern of Ophiomyia species, though specific details for this species are undocumented.

As a leaf miner, larvae may influence leaf longevity and photosynthetic capacity of host plants. The specialized host relationship suggests potential role in population regulation of Osmorhiza species.

• Ophiomyia mauraAlso in genus Ophiomyia and may occur on Apiaceae; requires genitalia examination for separation
• Phytomyza speciesOther agromyzid leaf miners on Apiaceae; differ in mine morphology and adult characters

• leaf miner
• Apiaceae
• woodland
• recently described

• BugGuide
• GBIF taxonomy match
• iNaturalist taxon
• Catalogue of Life