Lasiomma
Stein, 1916
Lasiomma is a of flies in the Anthomyiidae, established by Stein in 1916. Several are known to be significant pests of cones and seeds of European larch (Larix decidua), causing damage in the natural range of this tree in the French Alps and Italian Piedmont. The genus has been recorded from multiple European countries including France, Denmark, Norway, and Sweden.
Pronunciation
How to pronounce Lasiomma: /ˈlæsiˌɒmə/
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Identification
Identification keys for separating Lasiomma exist for both males and females, particularly for the three species associated with European larch cones: L. laricicola, L. melania, and L. infrequens.
Images
Habitat
Associated with cones of European larch (Larix decidua) in its natural distribution range; also recorded from brownfield sites and other open based on distribution records.
Distribution
Recorded from France, Denmark, Norway, and Sweden. within the show particular association with the natural range of European larch in the French Alps and Italian Piedmont.
Host Associations
- Larix decidua - pest of cones and seedsEuropean larch; damage occurs in natural range in French Alps and Italian Piedmont. L. laricicola also recorded from southern Massif Central. No Lasiomma observed in Japanese larch (Larix leptolepis) cones.
Behavior
Larvae develop within cones of European larch, causing significant damage to seeds. Attack rates are high within the natural range of the tree but artificial larch stands outside this area appear largely uncolonized, with limited exceptions.
Human Relevance
Economic pest of European larch seed production in forestry and seed orchard contexts.
Similar Taxa
- Other Anthomyiidae generaLasiomma require specific keys for identification; cone-feeding habit on Larix decidua is a distinguishing ecological trait for certain species in this .
More Details
Species diversity
At least three are documented from European larch cones: L. laricicola, L. melania (new to France), and L. infrequens (new to France). The contains additional species not associated with larch.