Phyllotreta liebecki

Distinguished from P. robusta by the male fifth antennal segment, which is dilated apically but lacks the internal process present in P. robusta. The elytral pattern (sinuate yellow vitta broadly attaining margin at apex) is shared with P. robusta. Differs from P. striolata in the stouter fifth antennal segment of males. Differs from P. zimmermanni in having a less stout fifth antennal segment. Antennal coloration (segments 1–4 light brown, 5–11 dark brown) provides additional diagnostic characters.

Elongate oval body, 1.75–2.5 mm in length. Shining black with a sinuate yellow vitta on each elytron; the vittae broadly attain the margin at the apex. Head, pronotum, and elytra are closely punctate. First four antennal segments are light brown, segments 5–11 dark brown.

North America. Documented from Manitoba and Ontario, Canada.

• Phyllotreta robustaShares sinuate yellow elytral vitta pattern; distinguished by male fifth antennal segment having internal process versus dilated but lacking process in P. liebecki.
• Phyllotreta striolataSimilar antennal structure; distinguished by male fifth antennal segment being less stout in P. striolata than in P. liebecki.
• Phyllotreta zimmermanniSimilar antennal structure; distinguished by male fifth antennal segment being stouter in P. zimmermanni than in P. liebecki.

• flea beetle
• Chrysomelidae
• Alticini
• North America
• Canada
• small beetle
• jumping beetle

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• Wikipedia
• GBIF taxonomy match
• iNaturalist taxon
• Occasional Pests - AgriLife Extension Entomology
• Meloidae Holdings | Entomology Research Museum
• The Drugs (Neonicotinoids) Don’t Work 3 - Buglife Blog - Buglife