Lissorhoptrus lacustris

Kuschel, 1951

marsh weevil

Lissorhoptrus lacustris is a of marsh weevil in the Brachyceridae, originally described by Kuschel in 1951. It is found in North America, though specific details about its and remain poorly documented in the available literature. The Lissorhoptrus is notable for containing the rice water weevil (L. oryzophilus), a major agricultural pest, but L. lacustris appears to be a non-pest species associated with marsh .

Pronunciation

How to pronounce Lissorhoptrus lacustris: /ˌlis.oʊˈrɒp.trəs ləˈkʌs.trɪs/

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Identification

Lissorhoptrus lacustris can be distinguished from the closely related and economically significant L. oryzophilus (rice water weevil) by its association with natural marsh rather than agricultural rice systems. Specific morphological diagnostic features are not documented in the available sources. Members of the Lissorhoptrus are small weevils with the characteristic rostrum (elongated snout) typical of Curculionoidea, though Brachyceridae often exhibit reduced rostral features compared to true Curculionidae.

Habitat

Marsh . The specific epithet "lacustris" (meaning "of lakes") suggests association with lacustrine or freshwater marsh environments.

Distribution

North America. Specific range details beyond continental distribution are not documented.

Human Relevance

No direct human relevance has been documented. Unlike the congeneric L. oryzophilus (rice water weevil), which is the most destructive early-season insect pest of rice in the United States causing yield losses up to 25 percent, L. lacustris appears to be a non-pest restricted to natural marsh .

Similar Taxa

Lissorhoptrus oryzophilusThe rice water weevil is the most economically important congeneric , distinguished by its association with cultivated rice (Oryza sativa) rather than natural marshes, and by its parthenogenetic in invaded ranges.

More Details

Taxonomic note

The placement of Lissorhoptrus has been subject to revision. While Wikipedia lists the under Brachyceridae, iNaturalist lists it under Curculionidae. Catalogue of Life and GBIF both accept Brachyceridae. This reflects ongoing taxonomic debate about the circumscription of Brachyceridae versus Curculionidae.

Data scarcity

Lissorhoptrus lacustris is extremely poorly represented in entomological literature and databases. As of the available sources, iNaturalist reports only 1 observation, and no peer-reviewed studies focusing on this were found in the provided context.