Chalcotrogus oblongior Wollaston

Longish Chalcotrogus Weevil (Chalcotrogus oblongior)  

This species was described in 1877, it was endemic to the island of Saint Helena in the southern Atlantic Ocean.  

Thomas Vernon Wollaston, the author of the species writes.:  

Of this species I have seen hitherto but two examples, which were taken by myself on the high central ridge. Unfortunately they are both of them females; so that I am not able to decide whether the rostrum is at all apically-dilated (at the insertion of the antennae) in the males. ” [1]


The Longish Chalcotrogus Weevil was already very scarce when it was discovered and described, it was not found again during searches in 2005/06 and thus is believed to be extinct. [2]



[1] T. Vernon Wollaston: Coleoptera Sanctae-Helenae. London: John Van Voorst, Paternoster Row 1877 
[2] Howard Mendel; Philip Ashmole; Myrtle Ashmole: Invertebrates of the Central Peaks and Peak Dale, St. Helena. Report for the St Helena National Trust, Jamestown 2008


edited: 02.12.2018