2 literature references for Phlegra sapphirina (Thorell, 1875):

Author: Simon E.
Year: 1876
Title: Les Arachnides de France. Tome 3.
Source: 127
Author: Thorell T.
Year: 1875c
Title: Descriptions of several European and North African spiders
Source: Konglige Svenska Vetenskaps-Akademiens Handlingar, Stockholm: 194