Hexarthrum
Wollaston, T.V., 1869
Species Guides
1- Hexarthrum ulkei(eastern wood weevil)
Hexarthrum is a of true weevils (Curculionidae) established by Wollaston in 1869. The genus contains approximately 10 described distributed across Asia, Africa, and North America. One species, Hexarthrum ulkei (eastern wood weevil), is known from North America. Most species appear to be associated with woody plants, though specific ecological details remain poorly documented for the majority of species.
Pronunciation
How to pronounce Hexarthrum: /hɛksˈaɹθɹəm/
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Distribution
The has a disjunct distribution spanning three continents. Asian include H. chinensis, H. duplicatum, H. smreczynskii, H. wushanensis, H. yunnanensis, and H. chaoi from China; H. brevipennis from an unspecified Asian locality; and H. usambaricum from the Usambara Mountains of Tanzania. The North American representative is H. ulkei (eastern wood weevil), described from the eastern United States in 1873. GBIF records indicate presence in Colombia, though this may represent an introduced or identification error.
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Taxonomic history
The was erected by Thomas Vernon Wollaston in 1869. have been described by multiple authors including Horn (1873), Voss (1934, 1955), Folwaczny (1966, 1968), Brown (1966), and Zhang & Osella (1995), indicating ongoing taxonomic work particularly in the 1960s and 1990s.
Data limitations
Despite being established over 150 years ago, Hexarthrum remains poorly studied. iNaturalist records are sparse (16 observations -wide), and primary literature focuses mainly on taxonomic description rather than . The abstract-only source for H. ulkei records could not yield extractable ecological data.