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Species Galerucella nymphaeae - Water-lily Beetle

Smallish Beetle - Galerucella nymphaeae Galerucella nymphaeae chrysomelid - Galerucella nymphaeae Water-lily Beetle? - Galerucella nymphaeae Galerucella sp. beetle - Galerucella nymphaeae Dusky striped orange beetle - Galerucella nymphaeae Water-lily Beetle Pupa - Galerucella nymphaeae Water-lily Beetle - Galerucella nymphaeae
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga
No Taxon (Series Cucujiformia)
Superfamily Chrysomeloidea (Longhorn and Leaf Beetles)
Family Chrysomelidae (Leaf Beetles)
Subfamily Galerucinae (Skeletonizing Leaf Beetles and Flea Beetles)
Tribe Galerucini
No Taxon (Section Atysites)
Genus Galerucella (Water-lily Beetle)
Species nymphaeae (Water-lily Beetle)
Explanation of Names
Galerucella nymphaeae (Linnaeus, 1758)
e. NA to AK, largely absent in sw. US (TX-FL-NF-AK) - Map (1)(2), Holarctic
principal foodplants are water-lilies (Nuphar spp.) and smartweeds (Polygonum spp.); other hosts include Water Chestnut (Trapa natans) and Water Shield (Brasenia schreberi); beetles have been raised in the lab on Purple Loosestrife (Lythrum salicaria)
Life Cycle
"Of the above-mentioned plants, Brasenia, Nuphar, and Polygonum are normal hosts. Populations feeding on Myrica may eventually be proven to belong to a separate species. In fact, beetles historically recognized as G. nymphaeae may well represent several sibling species, with true G. nymphaeae not occurring in North America at all. Whatever the case, beetles are apparently sometimes so numerous that they leave their normal hosts and may temporarily feed on other plants. Even so, some of the recorded associations were probably purely incidental." (3)
Works Cited
1.Catalog of Leaf Beetles of America North of Mexico
Ed Riley, Shawn Clark, and Terry Seeno. 2003. Coleopterists Society.
2.Global Biodiversity Information Facility (GBIF)
3.Host plants of leaf beetle species occurring in the United States and Canada
Clark et al. 2004. Coleopterists Society, Special Publication no. 2, 476 pp.