Gronocarus autumnalis

Adults can be distinguished from other Gronocarus species by their size (9.7–16 mm) and geographic restriction to the Florida panhandle west of the Choctawhatchee River and adjacent coastal Alabama and Mississippi. The common name 'lobed spiny burrowing beetle' suggests diagnostic body projections not shared with congeners, though specific distinguishing characters require additional sources.

Adults are 9.7–16 mm (0.38–0.63 in) in length. The specific epithet 'autumnalis' suggests autumnal activity. The common name 'lobed spiny burrowing beetle' indicates distinctive body ornamentation and fossorial (burrowing) adaptations, though detailed morphological descriptions are not available in the provided sources.

The species occurs in sandy coastal environments of the northern Gulf Coast. The common name indicates burrowing behavior, suggesting preference for friable, sandy substrates suitable for excavation.

Restricted to the southeastern United States: west of the Choctawhatchee River in the Florida panhandle, and coastal areas of Alabama and Mississippi.

Adults are active in autumn, as indicated by the specific epithet 'autumnalis'.

Burrowing behavior is indicated by the common name. Specific behavioral details are not documented in available sources.

• Other Gronocarus speciesGronocarus autumnalis is distinguished by its restricted Gulf Coast distribution and inferred morphological features (lobed, spiny body) referenced in its common name.

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