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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.
Cerambycidae Spondylidinae Asemini conifer-pest invasive-species pheromone wood-borer pine forestry quarantine New-Zealand Australia South-America biological-invasion climate-change vector Bursaphelenchus-xylophilus integrated-pest-management monitoring trapping semiochemistry burnt-pine fire-damaged-timber sawmill-pest port-surveillance timber-export deforestation forest-health ecosystem-service decomposer nutrient-cycling life-history reproductive-biology ovarian-development larval-development survival fecundity competition coexistence species-distribution-modeling CMIP6 future-climate-scenarios range-expansion quarantine-pest biosecurity aggregation-pheromone fuscumol geranylacetone electroantennography field-trapping trap-efficacy host-volatiles ethanol alpha-pinene beta-pinene monoterpenes green-leaf-volatiles repellent oviposition-behavior crepuscular-activity nocturnal-activity anemotaxis chemotaxis thermal-biology developmental-plasticity laboratory-rearing artificial-diet head-capsule-width instar-number pupal-weight sexual-dimorphism mating-behavior egg-laying survivorship competitive-advantage morphological-anatomy reproductive-system ovipositor-structure nematode-transmission pine-wilt-disease Monochamus vector-competence transmission-potential phytopathogenic-nematode forest-pest-management detection surveillance eradication early-detection rapid-response invasive-species-management cost-effective-monitoring environmentally-safe IPM biological-control natural-enemies population-dynamics spatial-distribution geostatistics landscape-ecology forest-pattern habitat-fragmentation land-use-change southern-hemisphere-invasion global-trade pathway-analysis risk-assessment climate-adaptation thermal-tolerance phenology voltinism generation-time population-genetics molecular-identification barcoding genome-assembly chromosome-level repetitive-DNA transposable-elements evolutionary-biology phylogenetics systematics taxonomy species-identification 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Monochamus notatus
northeastern pine sawyer, notable sawyer
Monochamus notatus is a large longhorned beetle (Cerambycidae) native to North America, occurring in Canada and the United States east of the Rocky Mountains. Adults are active from late spring through summer and are attracted to dead and dying conifers, particularly pines. The species is notable for its pronounced sexual dimorphism: males possess antennae up to twice their body length and elongated forelegs with expanded tarsi, while females have shorter antennae and unmodified legs. Like other Monochamus species, it responds to the aggregation pheromone monochamol and male-produced 2-(undecyloxy)-ethanol for mate location.
longhorned-beetle pine-sawyer forest-insect wood-borer pheromone-communication sexual-dimorphism conifer-associate North-America Cerambycidae Monochamus
Monochamus obtusus
Monochamus obtusus is a longhorned beetle (family Cerambycidae) described by Thomas Lincoln Casey Jr. in 1891. It belongs to a genus of sawyer beetles that develop as wood-borers in coniferous trees. The species is known from western North America, with records from British Columbia, Canada and the western United States. Two subspecies have been recognized: M. o. obtusus (the nominate form) and M. o. fulvomaculatus described by Linsley & Chemsak in 1983. Like other Monochamus species, it likely plays a role in forest nutrient cycling through its association with dead and dying conifer wood.
Cerambycidae longhorned-beetle sawyer-beetle wood-borer conifer-forest western-North-America Monochamus

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