Tanysphyrus lemnae
(Paykull, G. de, 1792)
Duckweed Weevil
Tanysphyrus lemnae is a small weevil native to Europe with established in North America. The larvae are leaf-miners that develop within duckweed plants of the Lemna. The species is commonly known as the Duckweed Weevil due to this specialized relationship.
Pronunciation
How to pronounce Tanysphyrus lemnae: //ˈtæn.ɪsˌfaɪ.rəs ˈlɛmˌneɪ//
These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.
Identification
Distinguished from other small aquatic weevils by its association with duckweed (Lemna). The Tanysphyrus can be separated from related weevil genera by its elongated body form and specific antennal club structure, though -level identification requires examination of genitalia or expert verification.
Images
Habitat
Aquatic and semi-aquatic environments where duckweed (Lemna) grows, including ponds, slow-moving streams, and still water bodies with floating vegetation.
Distribution
Native to Europe; established in North America. Distribution records confirm presence in Belgium and broader European range, with North American documented.
Diet
Larvae are leaf-miners in duckweed ( Lemna). feeding habits are not well documented.
Host Associations
- Lemna - larval leaf-miner in duckweed plants
Life Cycle
Larval development occurs within duckweed leaves as leaf-miners. Specific details regarding placement, , and timing are not well documented.
Ecological Role
Specialized herbivore of duckweed; may influence local duckweed in aquatic .
Human Relevance
None documented; not considered a pest of economic importance.
Similar Taxa
- Other Tanysphyrus speciesCongeneric share similar and may occur in overlapping ranges; require genitalia examination for reliable separation.
- Other small aquatic weevils (Erirhinidae/Brachyceridae)Similar size and preferences; distinguished by specificity for Lemna and subtle morphological characters of the Tanysphyrus.