Cerceris halone

Cerceris halone can be distinguished from the similar Cerceris fumipennis by its prey type: C. halone specializes on weevils (Curculionidae), while C. fumipennis specializes almost exclusively on jewel beetles (Buprestidae). The presence of weevils rather than buprestids near nest entrances indicates C. halone. C. halone has also been observed to exhibit faster, more powerful flight than C. fumipennis, making it more difficult to capture. Burrow entrances may appear slightly larger than those of C. fumipennis, though this is not a consistent distinguishing character. Both species create nearly identical burrow architecture: perfectly circular, pencil-sized entrances surrounded by symmetrical mounds of fine-textured diggings.

Nests in sand, typically in areas with well-packed sandy soil. Based on related species, likely found in lightly vegetated, sunny areas such as ball fields, dirt roads, playgrounds, and campsites near forested areas where prey beetles occur.

Central America and North America. GBIF records indicate presence in Middle America and North America.

Specialist predator of Curculionidae beetles (weevils). Captures adult weevils, paralyzes them with its sting, and provisions underground nests with them as food for larval offspring.

• Curculionidae - preyKnown predator of weevils; captures and paralyzes adult beetles to provision nests

Solitary ground-nesting wasp with typical crabronid life cycle. Females excavate underground burrows in sandy soil, capture and paralyze prey beetles with their sting, drag them into the nest, lay eggs on the paralyzed prey, and seal the cell with soil. Larvae develop by consuming the paralyzed beetles, pupate, and emerge as adults the following season. Multiple beetles may be provisioned in a single nest cell.

Hunts weevil beetles, paralyzing them with venom but not killing them. Carries prey upside down and head forward under the thorax during flight, resulting in slower, more straight-line flight compared to unburdened flight. Drops prey when threatened and does not retrieve it, instead seeking new prey. Aggregate nester, with multiple females nesting in loose colonies of 5–500 nests in suitable sandy habitat.

Predator controlling weevil beetle populations. As a prey specialist, may influence local weevil community structure through selective predation pressure.

Potential biosurveillance value for detecting weevil pest species, analogous to the use of C. fumipennis for detecting emerald ash borer. Could serve as a biological indicator for the presence of specific weevil species in an area.

• Cerceris fumipennisNearly identical burrow architecture and nesting behavior, but specializes on Buprestidae (jewel beetles) rather than Curculionidae; distinguishable by prey type at nest entrances and faster flight in C. halone
• Cerceris bicornisAnother weevil specialist in the same genus with similar ecology; may be distinguished by subtle morphological differences and geographic distribution

• predatory wasp
• solitary wasp
• ground-nesting
• prey specialist
• weevil predator
• biosurveillance potential

• BugGuide
• Wikipedia
• GBIF taxonomy match
• iNaturalist taxon
• Catalogue of Life
• Working with Cerceris fumipennis—Part 2 | Beetles In The Bush
• Working with Cerceris fumipennis—Part 1 | Beetles In The Bush
• Hymenoptera | Beetles In The Bush | Page 6
• Wasp, Geographic Data Improve Surveillance for Emerald Ash Borer
• Predatory Wasps and Citizen Scientists are Taking on the Emerald Ash Borer
• ID Challenge #19 | Beetles In The Bush