(336TEarc) Tetracanthella arctica (Cassagnau, 1959)

Tetracanthella arctica  is very similar to the common Tetracanthella wahlgreni. However, Tetracanthella arctica only has 2+2, 2+2, 3+3 macrosetae on the dorsal side of abdominal segments 1, 2 and 3 respectively whereas in Tetracanthella wahlgreni the setae are 2+2, 3+3, 3+3. Arne Fjellberg (personal communication to Steve Hopkin) identified specimens of Tetracanthella arctica collected by Juliane Filser in 1996 from moss on a vertical rock face at Sneem, Co. Kerry, Southwest Ireland. It is clear that Tetracanthella arctica could have been overlooked in the past although all the Tetracanthella wahlgreni checked by Steve Hopkin in the NHML collection had 3+3 macrosetae on abd2.

 

 

 
Facebook icon    Twitter icon    Instagram icon    LinkedIn icon © Roehampton University