Cymatodera wolcotti

Distinguished from other Cymatodera species by the elongated sixth visible ventrite that extends beyond the tergite margins, creating a distinctive concave surface with asymmetrical anterior and posterior angles. Male genitalia provide definitive identification: the slender aedeagus with subtriangular, slightly curved sides and sharp apex, combined with the phallic plate bearing two rows of diminutive tooth-like projections. These features are diagnostic at the species level within the genus.

Bilaterally symmetric beetles measuring 9–14 mm in length. The sixth visible ventrite is notably longer and wider than typical, extending conspicuously past the margins of the sixth tergite. This ventrite creates a concave surface with an oblique anterior bearing a sharp angle at the front and a less pronounced curve posteriorly. Posterior corners vary from folded inward to extended backward. Male genitalia feature a slender aedeagus with subtriangular sides that curve slightly, terminating in a sharp apex. The phallic plate bears two rows of small tooth-like projections that decrease in size distally. The phallobasic apodeme is robust distally.

Adults have been collected from specific host plants including Prunus persica (peach), Quercus nigra (water oak), and Pinus elliottii (slash pine) cones bearing fusiform rust cankers. These associations suggest arboreal and subcortical microhabitats. The broader family Cleridae occupies diverse habitats globally, though this does not necessarily extend to this species.

North America. Specific records include the United States, with documented occurrences in Arizona and association with southeastern U.S. tree species (water oak, slash pine).

Adults have been observed feeding on lignicolous insects and pollen around flowers. Like other Cleridae, the species is presumed predaceous, though direct observation of predation by this species is not documented.

• Prunus persica - adult occurrencepeach trees
• Quercus nigra - adult occurrencewater oaks
• Pinus elliottii - adult occurrencefusiform rust cankers on slash pine cones

Follows holometabolous development. The general Cleridae life cycle ranges from 35 days to 3 years, with temperature strongly influencing larval development rate—faster in warmer climates, slower in colder ones. Females lay 36–72 eggs per batch after copulation. Larvae are red or yellow with flat, hairy bodies. These details are generalized from family-level studies and may not precisely reflect this species' biology.

Adults are active on flowers and beneath tree bark. Some Cleridae adults are attracted to ultraviolet light, and at least one Cymatodera species (possibly C. wolcotti or a congener) has been collected at blacklight stations in Arizona.

As a member of Cleridae, likely functions as a predator of other insects in arboreal and subcortical habitats. The association with fusiform rust cankers on pine suggests possible involvement in canker-inhabiting food webs.

Named in honor of Albert Burke Wolcott (1869–1950), American entomologist and arachnologist. No documented economic importance or pest status.

• Other Cymatodera speciesRequires examination of male genitalia and sixth ventrite morphology for definitive separation; external features alone are insufficient.
• Other Cleridae generaGenus-level identification relies on ventral abdominal structure and antennal characteristics.

• checkered beetle
• Cleridae
• North America
• arboreal
• predator

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• GBIF taxonomy match
• Sphecidae | Beetles In The Bush