Chrysobothris cuprascens

LeConte, 1860

A small to medium-sized metallic wood-boring beetle in the Buprestidae, characterized by coppery or brassy metallic coloration. First described by LeConte in 1860, this occurs in North America and has been documented in pinyon-juniper woodland . have been observed on recently fallen branches of Pinus edulis (Colorado pinyon pine), where they run rapidly along the wood surface. Like other members of the Chrysobothris, the larvae are wood-borers that develop in dead or dying coniferous .

Pronunciation

How to pronounce Chrysobothris cuprascens: /ˌkɹɪsoʊˈbɒθrɪs ˌkjuːpɹəˈsɛnz/

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Identification

Distinguished from similar Chrysobothris by its coppery-bronze metallic coloration. Typically smaller than members of the 'sculptured group' within the . exhibit the characteristic rapid, zigzag running typical of Chrysobothris when disturbed. Specific diagnostic features for field identification from congeneric species are not well documented in available sources.

Habitat

Pinyon-juniper woodland; specifically associated with Pinus edulis (Colorado pinyon pine). have been found on recently wind-thrown or fallen branches of dying or dead pines.

Distribution

North America. Documented from Arizona (Coconino County, Kaibab National Forest) based on field observations. GBIF records indicate presence in North America generally.

Seasonality

have been observed in late June to early July. Activity likely coincides with the availability of suitable material in appropriate stages.

Host Associations

  • Pinus edulis - larval Wood-boring larvae develop in dead or dying branches and trunks; found on recently fallen branches

Behavior

run rapidly along the surface of dead pine branches when disturbed, exhibiting characteristic escape with visible metallic green abdominal tergites. Often found in association with other wood-boring beetles and their (e.g., Enoclerus clerid beetles).

Ecological Role

Wood-borer in dead and dying coniferous trees, contributing to nutrient cycling in pinyon-juniper woodland . Serves as prey for predatory beetles such as Enoclerus .

Similar Taxa

  • Chrysobothris dentipesSimilar size and preference; both occur on Pinus ponderosa and related conifers in western North America. C. dentipes typically exhibits more sculptured elytral surface.
  • Chrysobothris spp. 'sculptured group'Larger with more pronounced elytral sculpturing; often sympatric in pinyon-juniper woodlands but distinguishable by size and surface texture.
  • Chrysobothris caddoAnother small Chrysobothris occurring in similar western , but associated with Celtis (hackberry) rather than conifers.

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Sources and further reading