Fuscumol
Guides
Arhopalus
burnt pine longhorn beetle (A. ferus), black pine sawyer (A. rusticus)
Arhopalus is a genus of longhorn beetles (Cerambycidae: Spondylidinae: Asemini) distributed across the Northern Hemisphere, with several species introduced to the Southern Hemisphere as invasive pests of conifers. The genus comprises approximately 20 described species, with A. rusticus and A. ferus being the most extensively studied due to their economic importance. Species develop in dead or fire-damaged conifer wood, with some exhibiting strong attraction to burnt pine volatiles. Several species produce male-emitted aggregation-sex pheromones containing fuscumol and geranylacetone. Invasive populations in New Zealand, Australia, South America, and South Africa require monitoring at ports and sawmills for timber export compliance.
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te-statemethodological-state-stateepistemological-state-stateontological-state-stateaxiological-state-statepraxeological-state-statelogical-state-staterational-state-statereasonable-state-statesensible-state-statepragmatic-state-statepractical-state-statetheoretical-state-stateconceptual-state-stateempirical-state-stateexperimental-state-stateobservational-state-stateexperiential-state-statephenomenological-state-statehermeneutical-state-statecritical-state-statereflexive-state-statereflective-state-staterepresentative-state-stateTetropium
spruce longhorn beetles
Tetropium is a genus of long-horned beetles (Cerambycidae) containing at least 20 described species, sometimes classified in its own monotypic tribe Tetropiini. Several species are significant forest pests, particularly of spruce (Picea) trees. The genus includes economically important species such as T. fuscum (brown spruce longhorn beetle), an invasive pest in Atlantic Canada, and T. castaneum. Adults are attracted to synthetic pheromones and host tree volatiles, making them amenable to detection and monitoring using baited traps.
Tetropium cinnamopterum
Eastern Larch Borer
Tetropium cinnamopterum is a native North American cerambycid beetle in the tribe Tetropiini. Adults are distinguished from the closely related T. parvulum by eye shape, scutellar structure, external genitalia, and pronotal puncture number; larvae are distinguished by urogomphi morphology. The species has been recorded from various conifer hosts, with larvae developing in conifer wood. It is transcontinental in Canada and occurs sympatrically with invasive T. fuscum in Atlantic Canada, where cross-attraction to the aggregation pheromone fuscumol may occur. Both sexes respond to (S)-fuscumol synergized by host monoterpenes and ethanol.
Tetropium fuscum
Brown Spruce Longhorn Beetle
Tetropium fuscum is a wood-boring cerambycid beetle native to Europe and Northern Asia, established as an invasive species in Atlantic Canada since at least 1990. The species is a documented pest of spruce trees (Picea spp.), with larvae developing in the phloem of host trees. Adult males produce an aggregation pheromone called fuscumol that attracts both sexes, particularly when combined with host tree volatiles. In its introduced Canadian range, it has been observed infesting stressed and moribund red spruce, with larval galleries sometimes girdling stems and causing tree mortality.