Sphenostethus taslei
(Buquet, 1841)
Sphenostethus taslei is a large longhorn beetle ( Cerambycidae) and the sole member of its . It belongs to the Prioninae, a group characterized by robust bodies and often large size. The has been documented in North America, with records from the United States. It is considered uncommon and has been captured in ethanol/red wine traps in xeric igneous prairie .
Pronunciation
How to pronounce Sphenostethus taslei: //ˌsfɛnoʊˈstɛθəs ˈtæzli//
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Identification
As the only in its , Sphenostethus taslei can be distinguished from other prionine longhorns by its unique combination of morphological features characteristic of the genus. Members of Prioninae typically have large, robust bodies, that may be serrate or in males, and prominent . Specific diagnostic features for S. taslei relative to other prionines would require examination of detailed morphological characters such as antennal structure, pronotal shape, and elytral .
Images
Habitat
Based on collection records, Sphenostethus taslei has been found in xeric igneous prairie and dry post oak woodland. One specimen was captured in a trap placed in xeric igneous prairie at Hughes Mountain Natural Area in Missouri.
Distribution
North America; documented from the United States. Specific state records include Missouri, where it has been captured at Hughes Mountain Natural Area and previously at Victoria Glades.
Behavior
Human Relevance
Of interest to entomologists and coleopterists due to its rarity and status as the sole member of its . The has been documented in scientific collecting efforts and trap studies comparing ethanol versus ethanol/red wine attractants.
Similar Taxa
- Other Prioninae generaSphenostethus taslei can be distinguished from other prionine longhorns by its unique generic-level morphological characters; however, detailed comparison requires examination of specific structural features such as antennal and pronotal armature.
More Details
Rarity and documentation
The is considered uncommon, with the observer noting having seen it only once before in a trap at Victoria Glades prior to the Hughes Mountain capture. The Sphenostethus is , making this species the sole representative of its genus.