Jeffrey-pine

Guides

• Dendroctonus jeffreyi

  Jeffrey pine beetle

  Dendroctonus jeffreyi is a bark beetle in the family Curculionidae, subfamily Scolytinae, endemic to western North America. The species is monophagous on Jeffrey pine (Pinus jeffreyi), feeding on phloem and causing significant tree mortality during outbreak conditions. Adults bore into bark to create egg chambers, with larvae developing in galleries under the bark. The beetle possesses specialized mycangia for transporting the symbiotic fungus Ophiostoma clavigerum, which contributes to tree mortality. Populations show genetic structure across their range, with southern California populations most differentiated.

  bark-beetleforest-pestJeffrey-pinemonophagousmycangial-funguspheromonephloem-feederwestern-North-AmericaScolytinaetree-mortalityoutbreak-dynamicssemiochemicalsvectorsymbiosis

• Dioryctria westerlandi

  Westerland's Coneworm Moth

  Dioryctria westerlandi is a small coneworm moth species described in 2002 from California. Adults are pale with strongly contrasting dark transverse bands and reddish patches on the wings. The species is active in late summer and fall, with adults flying from July through October. Larvae are suspected to feed on Jeffrey pine (Pinus jeffreyi).

  coneworm-mothPyralidaePhycitinaewestern-North-AmericaJeffrey-pineconifer-feederrecently-described-species2002-description