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Species Fenusella nana - Early Birch Leaf Edgeminer

Early Birch Leaf Edgeminer - Fenusella nana - female European Birch Leafminer - Fenusella nana Birch mining sawfly larva - Fenusella nana Sawfly - Fenusella nana Sawfly - Fenusella nana sawfly - Fenusella nana sawfly - Fenusella nana Mine in Betula - Fenusella nana
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Hymenoptera (Ants, Bees, Wasps and Sawflies)
No Taxon ("Symphyta" - Sawflies, Horntails, and Wood Wasps)
Family Tenthredinidae (Common Sawflies)
Subfamily Heterarthrinae
Tribe Fenusini
Genus Fenusella
Species nana (Early Birch Leaf Edgeminer)
Synonyms and other taxonomic changes
Scolioneura laeta Enslin, Messa nana (Klug 1816)
Explanation of Names
Fenusella nana (Klug 1818)
Greek nanos (νανος) 'dwarf'
avg. BL: ♀ 4.5 mm, ♂ (unknown in NA) 4-4.5 mm(1)
native to, and widespread across n. Eurasia, adventive in NA (ne. US)(1)(2)(3), introduced from Europe
The adult lays eggs in the spring
hosts: birches(1), esp. white birch
Life Cycle
one generation per year; pupates in the soil and remains there until the next year
The mine made by the larva starts at the end of a vein at a leaf's edge and it is plugged by frass [mine(4)]
earliest NA record: ME 1966(1)
Internet References
Species pages: Ellis (2007) (Europe)(5) | Edmunds (2007) (UK)(4) | Pitkin et al. (2007-) (UK)(6)