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Title: FIRST FOOD PLANT RECORD FOR LAGIDEUS KONOW (HYMENOPTERA: PERGIDAE), A NEW SPECIES FEEDING ON FUCHSIA AND LUDWIGIA (ONAGRACEAE) IN ARGENTINA

Author
item Smith, David R

Submitted to: Journal of Hymenoptera Research
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 1/6/2004
Publication Date: 3/13/2004
Citation: Smith, D.R. 2004. First food plant record for lagideus konow (Hymenoptera: Pergidae), a new species feeding on Fuchsia and Ludwigia (Onagraceae) in Argentina. Journal of Hymenoptera Research. 13:120-124

Interpretive Summary: The caterpillarlike larvae of sawflies feed on a wide variety of plants and are economically important in agricultural crops, forests, and ornamentals. Some may be potentially beneficial as biological control agents of invasive plants. Sawfly larvae were discovered feeding on water primrose in Argentina. The sawfly is a species new to science, and this is the first food plant record for this group of sawflies. Adults and larvae of the new species are described and illustrated. This will be useful to scientists interested in plant-feeding insects, to biological control workers who may be involved in control of water primrose, and to APHIS for identification of exotic interceptions.

Technical Abstract: Lagideus badoi Smith, n. sp. (Pergidae: Syzygoniinae), from Argentina and Uruguay is described and illustrated. Adults were reared from larvae feeding on Fuchsia sp. and Ludwigia peploides (Kunth) Raven (Onagraceae) in Buenos Aires, Argentina. This is the first food plant record for a species of Lagideus. The larva, possessing two long apical filaments, is similar to the larva of Syzygonia cyanocephala Klug of Brazil and resembles larvae of the Australian genus Philomastix Froggatt (Pergidae: Philomastiginae).