Crepidodera aereola

The species can be recognized by its minute size (1–1.6 mm), metallic bronze coloration, and association with Hibiscus host plants. It may be confused with Chaetocnema species, particularly C. quadricollis, which shares similar size, host plant preferences, and general gestalt. Definitive identification requires examination of morphological characters; the species was historically noted for having 'exactly the same aspect of a small Crepidodera' as described by Schwarz (1878).

Adults are extremely small, with males measuring just over 1 mm and females approximately 1.6 mm in length. The body has been described as having the general appearance of a small Crepidodera, with metallic coloration suggested by the species epithet 'aereola' (bronze-colored). Like all members of the tribe Alticini, it possesses enlarged hind femora adapted for jumping.

Associated with stands of rosemallow (Hibiscus lasiocarpus) and related Hibiscus species in riparian and wetland habitats. Observations have been made in state parks and natural areas where host plants grow, including along river corridors in east-central Missouri.

Documented from North America, with specific records from Missouri, Florida (type locality), and other localities across the eastern and central United States. GBIF records confirm presence across North America.

Adults have been observed in mid-August in Missouri. Activity likely coincides with host plant availability during summer months.

Adults feed on foliage of Hibiscus species, including rosemallow (Hibiscus lasiocarpus). Feeding occurs gregariously on upper leaf surfaces, causing leaves to shrivel and turn brown when damage is severe.

• Hibiscus lasiocarpus - food plantrosemallow
• Hibiscus moscheutos - food plantswamp rose-mallow; historical association from New Jersey records
• Hibiscus spp. - food plantgeneral host genus association

Adults feed gregariously on upper leaf surfaces. When disturbed, they jump using their enlarged hind legs, a characteristic behavior of flea beetles (Alticini). Adults have been observed in copulatory pairs, though whether this represents active mating or mate guarding has not been confirmed.

Herbivore specializing on Hibiscus species. Feeding damage can cause leaf shriveling and browning, potentially affecting host plant fitness.

Has been noted as an occasional pest of rosemallow, with historical recommendations for chemical control (Bordeaux mixture or arsenate of lead) dating to 1919. Currently of minor economic significance.

• Chaetocnema quadricollisShares extremely small size (1–1.6 mm), host plant association with Hibiscus species, and similar general appearance ('gestalt'). Historically confused due to these shared traits; C. quadricollis was originally described as having 'exactly the same aspect of a small Crepidodera'. Distinguished by morphological characters requiring expert examination.
• Chaetocnema decipiensSynonymized with C. quadricollis; previously used name for Missouri populations that were later confirmed as C. quadricollis.

• flea beetle
• Chrysomelidae
• Alticini
• Hibiscus
• rosemallow
• North America
• tiny beetle
• leaf beetle
• herbivore

• BugGuide
• Wikipedia
• GBIF taxonomy match
• iNaturalist taxon
• Life at 8X—hibiscus flea beetle | Beetles In The Bush