Cicindela waynei

Adults can be distinguished from other sand-dune tiger beetles by their restricted distribution in the Bruneau Dunes of Idaho. Males possess uniquely modified, enlarged white mandibles that are conspicuously different from females and from related species. The species shares the general 'flashy tiger beetle' coloration pattern with other C. maritima group members, though precise diagnostic color features require specialist examination. Similar sympatric or parapatric species include C. albissima (Coral Pink Sand Dunes, Utah), C. arenicola (St. Anthony Sand Dunes, Idaho), and C. theatina (Colorado), all of which occur in different dune systems.

Restricted to active sand dunes in Bruneau Dunes State Park, southwestern Idaho. The species requires open, unvegetated or sparsely vegetated dune surfaces for thermoregulation, foraging, and larval burrow construction. Habitat specificity to this single dune system represents one of the most restricted ranges among North American tiger beetles.

Endemic to Bruneau Dunes State Park in Owyhee County, southwestern Idaho, United States. The entire known range is confined to this single dune complex.

Adult activity extends at least into May, with mating documented during this month. This timing is later than previously speculated (Baker et al. 1997), suggesting first-instar larvae may occur across a longer seasonal window than originally assumed. The extended larval period has direct implications for conservation management.

Larvae construct burrows in sand dune substrates. First instar larvae are a stated management priority for conservation. The documented May mating date implies larval development occurs across an extended period, though specific details of egg deposition, larval instar duration, and pupation remain undocumented in the available sources.

Males exhibit mate guarding following copulation, a behavior frequently observed in tiger beetles. During mating, females attempt to dislodge males through vigorous movements; males use their enlarged, modified mandibles to maintain attachment. This represents the first documented mating observation for the species. Adults are diurnal, active predators typical of the genus.

Predator in sand dune ecosystems. As a habitat specialist with extremely restricted distribution, it serves as an indicator species for dune ecosystem integrity. Population trends reflect broader dune health, with documented decline despite protective measures.

Subject of conservation concern due to globally imperiled status. Populations have declined despite prohibitions on insect collecting, cattle grazing, and off-road vehicles within Bruneau Dunes State Park. Remaining threats include human trampling and pesticide drift from adjacent agricultural lands. The species has been proposed for federal Endangered Species listing consideration. It attracts specialist entomologists and photographers due to its rarity and distinctive male morphology.

• Cicindela albissimaCoral Pink Sand Dune tiger beetle of Utah; another C. maritima group member with highly restricted dune distribution, but occurs in different state and dune system
• Cicindela arenicolaSt. Anthony Sand Dune tiger beetle of Idaho; same state but different dune system (eastern Idaho), with non-overlapping range
• Cicindela theatinaColorado dune tiger beetle; C. maritima group member restricted to Colorado dunes
• Cicindela limbataSandy tiger beetle; broader distribution across sand habitats, not restricted to single dune complex

• endemic
• imperiled
• sand dune specialist
• Idaho endemic
• C. maritima group

• BugGuide
• Wikipedia
• GBIF taxonomy match
• iNaturalist taxon
• NCBI Taxonomy
• Bruneau Sand Dune tiger beetles caught in the act! | Beetles In The Bush
• Bruneau Sand Dune tiger beetles caught in the act! | Beetles In The Bush