Port-introduction
Guides
Cephennium
Cephennium is a genus of minute rove beetles in the family Staphylinidae, subfamily Scydmaeninae, first described by Müller and Kunze in 1822. The genus is predominantly western European in distribution but has been recorded across Europe, Northern America, the Middle East, and as far east as Kyrgyzstan. Recent taxonomic work has revealed substantial undescribed diversity, particularly in Turkey where 25 named species are now recognized. The genus has been introduced to North America via port cities, with C. gallicum documented from Halifax, Nova Scotia.
Cephennium gallicum
Cephennium gallicum is a minute rove beetle in the subfamily Scydmaeninae, native to Europe and first recorded in North America in 2004 from Point Pleasant Park, Halifax, Nova Scotia. The species is believed to have been introduced via shipping activity at the port of Halifax. It represents one of several documented cases of Palearctic Coleoptera establishing populations in North American port cities.
Phloeocharis subtilissima
Phloeocharis subtilissima is a small rove beetle (Staphylinidae: Phloeocharinae) native to the Palearctic region. It was first documented in North America in 2004 from Point Pleasant Park, Halifax, Nova Scotia, representing an introduction via maritime shipping. The species belongs to a subfamily associated with decaying plant matter and fungal habitats.
Trichonephila clavata
Jorō spider, Joro Spider, Parachute spider
Trichonephila clavata, commonly known as the Jorō spider, is a large orb-weaving spider native to East Asia that has become established as an invasive species in the southeastern United States since approximately 2010. First confirmed in Georgia in 2014, it has expanded rapidly across multiple states through a combination of ballooning dispersal and human-mediated transport. The species is notable for its substantial size, striking coloration, and extensive golden webs, but poses minimal risk to humans due to small fangs and docile behavior. Its physiological adaptations—including higher metabolic rate, faster heart rate, and greater cold tolerance than its congener Trichonephila clavipes—suggest potential for continued northward range expansion.
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