Heterarthrus
Wollaston, T.V., 1873
Species Guides
1- Heterarthrus nemoratus(Late Birch Leaf Edgeminer Sawfly)
Heterarthrus is a of in the Tenthredinidae. occur in Eurasia and North America. The genus includes leafmining species that feed on trees in the family Betulaceae. Heterarthrus vagans, a Palaearctic species, has been introduced to southwestern British Columbia, Canada, where it mines leaves of native red alder.
Pronunciation
How to pronounce Heterarthrus: //ˌhɛtəˈrɑrθrəs//
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Habitat
Associated with trees in the Betulaceae, particularly alder (Alnus). In North America, Heterarthrus vagans occurs in the Fraser River valley and adjacent lowland areas of southwestern British Columbia.
Distribution
Eurasia and North America. In North America, established of introduced Heterarthrus vagans are known from southwestern British Columbia, Canada, specifically the Fraser River valley west of Hope and north along Howe Sound to near Squamish.
Diet
Leaves of alder (Alnus rubra) for Heterarthrus vagans; other likely associated with Betulaceae.
Host Associations
- Alnus rubra - larval food plantred alder; for introduced Heterarthrus vagans in North America
Life Cycle
Heterarthrus vagans completes at least two per year in its introduced North American range.
Behavior
Larvae are leafminers, feeding internally within leaf tissue.
Ecological Role
Leafminer on alder and related trees; introduced may impact native alder foliage in North America.
Human Relevance
Heterarthrus vagans is an introduced in North America with potential to affect native red alder stands. No significant economic or medical importance documented.
Similar Taxa
- Other HeterarthrinaeOther in the subtribe Heterarthrinae also mine leaves of Betulaceae; a modified key to on Betulaceae has been published to aid recognition of Heterarthrus vagans.