Mixed-forest
Guides
Arctia parthenos
St. Lawrence tiger moth
Arctia parthenos, commonly known as the St. Lawrence tiger moth, is a medium-sized moth in the family Erebidae. It was first described by Thaddeus William Harris in 1850. The species inhabits boreal North America across a broad latitudinal range from Alaska to Labrador, with southern extensions into the Rocky and Appalachian Mountains. Adults are active from late May to early August with one generation per year. The larvae feed on woody plants including willow, alder, and birch.
Euchlaena obtusaria
Obtuse Euchlaena Moth
Euchlaena obtusaria is a geometrid moth found across North America in mixed wood forests. Adults have a wingspan of 27–48 mm and are active from spring through late summer. Larvae feed on Rosa and Impatiens species. The species was first described by Jacob Hübner in 1813.
Pityogenes bidentatus
Pityogenes bidentatus is a European bark beetle that colonizes Scots pine (Pinus sylvestris). The species exhibits sophisticated olfactory-mediated behaviors for host location, including attraction to aggregation pheromone components (grandisol and cis-verbenol) and active avoidance of nonhost volatiles. Its behavioral response to monoterpene odors is context-dependent: avoidance occurs during flight but not during walking, likely representing distinct sensory mechanisms for long-range host discrimination versus short-range gallery establishment.
bark-beetleScolytinaePinus-sylvestrisaggregation-pheromoneolfactory-behaviorhost-selectionmonoterpene-avoidancecontext-dependent-plasticitynonhost-avoidancenorthern-Europegrandisolcis-verbenol1-octene-3-olβ-caryophylleneflight-behaviorwalking-behaviorelectroantennographypopulation-genetics-modelnematode-associationBursaphelenchus-pinophilusnematangiaCzech-Republicmixed-forestconifer-forestScots-pineNorway-sprucenonhost-volatileschemical-ecologyinsect-plant-interactionsherbivore-host-rangesensory-ecologybehavioral-plasticitypheromone-ecologyforest-entomologyinvasive-potential-(North-America-records)