Eleodes obscura sulcipennis

This subspecies can be distinguished from other Eleodes obscura subspecies by the presence of pronounced longitudinal sulci (grooves) on the elytra, as indicated by the subspecific epithet 'sulcipennis'. Adults are medium-sized darkling beetles with the typical elongate body form characteristic of the genus Eleodes.

Coniferous woodlands dominated by Pinus ponderosa (Ponderosa pine) and Juniperus osteosperma (Utah juniper) in montane regions. Observed at elevations around 6000 feet in southwestern Utah.

Documented from southwestern Utah (Kane County, Ponderosa Grove Campground area). The broader species Eleodes obscura occurs across western North America; this subspecies' precise range boundaries remain poorly documented.

Adults have been observed in early September, suggesting late-season activity in montane habitats.

• Pinus ponderosa - adult habitatAdults observed on trunk at night
• Juniperus osteosperma - adult habitatAdults observed on trunk at night

Adults are nocturnal and climb on the trunks of large coniferous trees at night. They have been observed active on tree trunks during post-dusk hours in early September.

• Coelocnemis sulcataSympatric tenebrionid species found on same tree trunks at night; distinguished by different genus-level morphology and presumably different elytral sculpturing patterns.
• Eleodes pimelioidesSympatric congener found in same general region; distinguished by different body form and habitat use (ground-dwelling in pine duff versus trunk-climbing).

• nocturnal
• arboreal
• montane
• conifer-associated
• western North America

• BugGuide
• GBIF taxonomy match
• iNaturalist taxon
• NCBI Taxonomy
• Oecanthidae | Beetles In The Bush