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Species Xanthogaleruca luteola - Elm Leaf Beetle

Fooled me in the field - Xanthogaleruca luteola Fooled me in the field - Xanthogaleruca luteola Elm leaf beetle - Xanthogaleruca luteola Unknown beetle - Xanthogaleruca luteola Xanthogaleruca luteola Elm Leaf Beetle - Xanthogaleruca luteola beetle ID - Xanthogaleruca luteola Elm Leaf Beetle Xanthogaleruca luteola - Xanthogaleruca luteola
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga (Water, Rove, Scarab, Long-horned, Leaf and Snout Beetles)
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 Xanthogaleruca
Species luteola (Elm Leaf Beetle)
Explanation of Names
Xanthogaleruca luteola (Müller 1766)
luteola = 'yellowish'
Size
6-8 mm
Range
Native to w. Palaearctic(1), adventive in our area (CA-FL-NS-BC)(2)(3)
Food
hosts: elms (Ulmus)(2)
Remarks
first detected in Baltimore, MD in the late 1830s(2)(3)
Considered a pest of elms(2)
See Also
Looks similar to some members of Trirhabda. In Xanthogaleruca antennomere 3 is longer than (or subequal to) antennomere 4, shorter in Trirhabda(4)
At the base of each elytron in the typical form of X. luteola there is a short, dark, medial spot or stripe(4) (may be obscured in forms with uniformly dark elytra)

In addition to the occipital spot present in both genera, X. luteola usually has a second "frontal" spot on the head just above the antennae, rarely present in Trirhabda
X. luteola is usually found near parks or towns where elm trees have been planted. Trirhabda spp. are native and usually occur in less disturbed areas.
Internet References