Spondylidinae
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-stateAsemini
Asemini is a tribe of longhorn beetles in the subfamily Spondylidinae. The tribe includes at least 10 genera, with some genera (notably Nothorhina and Tetropium) sometimes placed in separate monotypic tribes by different authorities. Members are primarily associated with coniferous and broadleaf trees.
Atimiini
Atimiini is a small tribe of longhorn beetles (Cerambycidae) within the subfamily Spondylidinae. The tribe contains two genera: Atimia, with seven described species distributed across North America, and Paratimia, represented by a single species. These beetles are characterized by their association with coniferous habitats.
Megasemum asperum
Megasemum asperum is a longhorn beetle (Cerambycidae) species described by John Lawrence LeConte in 1854. It belongs to the tribe Asemini within the subfamily Spondylidinae. The species is native to western North America, with records from Canada (Alberta, British Columbia) and the United States. Like other members of its tribe, it likely develops in coniferous wood, though specific biological details remain poorly documented.
Scaphinus
Scaphinus is a monotypic genus of long-horned beetles (Cerambycidae) established by LeConte in 1851. The genus contains a single described species, Scaphinus muticus. It belongs to the subfamily Spondylidinae and tribe Spondylidini. The genus is represented by limited observational records.
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.
Tetropium undescribed
An undescribed species in the longhorned beetle genus Tetropium, collected during nocturnal fieldwork in ponderosa pine forest in southwestern Utah. The specimen was found on the trunk of a large, recently-dead ponderosa pine alongside other woodboring beetles including Arhopalus species and Trogossitidae. This represents one of numerous undescribed cerambycid species awaiting formal taxonomic description.