Microrhopala rubrolineata signaticollis

The genus Microrhopala can be distinguished from related hispine genera by its small clubbed antennae (the source of its name, from Greek micr 'small' and rhopal 'club'). Species-level identification within Microrhopala requires examination of elytral coloration and pattern, antennal segmentation, and elytral margin structure. For M. rubrolineata signaticollis specifically, consult Clark (1983) for diagnostic features separating it from other M. rubrolineata subspecies and congeners.

Recorded from North America and Middle America according to GBIF distribution records. The broader species M. rubrolineata occurs across these regions, with the subspecies signaticollis representing a geographically defined population.

• Microrhopala vittataSimilar size, habitat preference, and host association with Asteraceae; distinguished by dull reddish elytral stripes, eight-segmented antennae, and smooth (not serrate or toothed) elytral margins per Clark (1983)
• Microrhopala rubrolineata (nominate subspecies)Conspecific at species level; subspecies separation requires examination of type specimens and geographic origin

• Chrysomelidae
• Cassidinae
• hispine
• leaf beetle
• North America
• Middle America
• herbivore
• Asteraceae specialist
• subspecies

• BugGuide
• GBIF taxonomy match
• iNaturalist taxon
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