Eronyxa

Associated with incense cedar (Calocedrus decurrens) in California, where larvae prey on scale insects living on this host tree.

California, USA. The genus has broader distribution with 62 iNaturalist observations, though specific range details beyond California are not documented in available sources.

Predatory. Larvae of Eronyxa expansus have been observed feeding on the incense cedar scale (Xylococculus macrocarpae).

• Xylococculus macrocarpae - preyincense cedar scale
• Calocedrus decurrens - associated habitatincense cedar, host tree of prey scale insect

Predatory behavior documented in larval stage; larvae are common predators of scale insects on incense cedar.

Biological control agent; acts as a predator of scale insect pests, potentially regulating populations of Xylococculus macrocarpae on incense cedar.

May provide incidental biological control of scale insects on incense cedar, a commercially and ecologically important conifer species in California.

• predator
• scale insect predator
• biological control
• California endemic fauna
• conifer associated

• BugGuide
• GBIF taxonomy match
• iNaturalist taxon
• NCBI Taxonomy
• Life history of the incense cedar scale,Xylococculus macrocarpae(Homoptera: Margarodidae), on incense cedar in California with a description of the larvae of one of its common predators,Eronyxa expansusVan Dyke (Coleoptera: Trogositidae)