Scolothrips quadrimaculatus Priesner 1933

Scolothrips quadrimaculatus Priesner 1933: 195

Described from the Canary Islands, the two original females are not in the Senckenberg Museum. The character states that are used to distinguish quadrimaculatus in the key to European species (zur Strassen, 2003) are derived from the original description, and are here not considered reliable. Moreover, the key to species provided by Priesner (1950) also seems to have been constructed without access to the type specimens. The collection data quoted by Priesner for quadrimaculatus and for lanzarotensis are identical. It seems that the type material of all of the species described from the Canary Islands in that 1933 paper are missing, and in the absence of original specimens the name quadrimaculatus is here considered a nomen dubium.