Rhagodera
Mannerheim, 1843
cylindrical bark beetles
Species Guides
3- Rhagodera interrupta
- Rhagodera texana
- Rhagodera tuberculata(cylindrical bark beetle)
Rhagodera is a of cylindrical bark beetles in the Zopheridae, established by Mannerheim in 1843. The genus comprises at least four described distributed in North America. Members of this genus are classified within the tribe Rhagoderini and Colydiinae. These beetles are associated with bark , though specific ecological details remain poorly documented.
Pronunciation
How to pronounce Rhagodera: //ræɡəˈdɪərə//
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Identification
Rhagodera can be distinguished from other colydiine by cylindrical body form and association with the tribe Rhagoderini. The four described are separated by specific sculptural features: R. costata has costate (ribbed) , R. tuberculata bears , R. interrupta has interrupted sculptural patterns, and R. texana is restricted to Texas. Definitive identification to species level requires examination of elytral and geographic provenance.
Habitat
Associated with bark of trees and woody substrates, consistent with the 'cylindrical bark beetle' applied to the group. Specific microhabitat preferences within bark (e.g., under bark, in galleries, in decaying wood) are not documented in available sources.
Distribution
North America. -level distributions: R. costata and R. tuberculata have broader ranges; R. texana is restricted to Texas; R. interrupta occurs in limited areas as described from type localities.
Similar Taxa
- Other Colydiinae generaRhagodera is distinguished by tribal placement in Rhagoderini and specific cylindrical body form; many other colydiines share bark-associated habits but differ in tribal affiliation and detailed .
- BitomaAnother of cylindrical bark beetles in Zopheridae, but placed in different tribe (Colydiini) and generally with different elytral sculpturing patterns.
More Details
Taxonomic History
The was established by Mannerheim in 1843 with R. tuberculata as the type . Two additional species were described by Stephan in 1989, indicating continued taxonomic work on this relatively small genus.
Observation Rarity
Only 18 observations recorded in iNaturalist as of data compilation, suggesting either genuine rarity, cryptic habits, or under-collection due to specialized bark-dwelling lifestyle.