Tychiorhinus porrectus Wollaston

Stretched Saint Helena Weevil (Tychiorhinus porrectus)  

This species was described in 1877, it was endemic to the island of Saint Helena, where it apparently was restricted to the central ridge.  

T. V. Wollaston, the author of the species writes in 1877.:  

…, – the whole of my examples (only eleven, however, in numer) having been taken by myself at Cason’s. Although without doubt attached normally to the cabbage-trees (from whithin the loose rotting masses of which some of my individuals were obtained), it would appear nevertheless, like so many of the Cossonids in that particular locality, to have adapted itself to the pines, – beneath the old fallen trunks of which the majority of my specimens were captured.” [1]  

The Stretched Saint Helena Weevil appears to have managed to adapt itself to the changed circumstances caused by the human settlers on the island, at least for a while – it was not found during recent field searches and is now feared 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