Andrena fratella, WARNCKE, 1968

Arncke, 2021, Taxonomic re-evaluation of Andrena cyanomicans PÉREZ, 1895, A. fratella WARNCKE, 1968, A. maderensis WARNCKE, 1969, A. mirna WARNCKE, 1969, A. notata WARNCKE, 1968, and A. portosanctana WARNCKE, 1969 (Hymenoptera, Anthophila), Linzer biologische Beiträge 53 (2), pp. 631-698 : 683

4. Andrena fratella , A. mirna ( Fig. 36 )

For females, only 14 of the 18 parameters could be used for the PCA. FL3, OCD, POD, and PSL were eliminated because of insufficient correlation values (p> 0.05%). Andrena fratella and A. mirna show a clearly separated clustering. The value of explained variance is high (46.6%/19.7%). In males, only six parameters could be used (CLP, HL, HW, MSW, MTW, WL). The three species are clearly separated from each other for males. The value of the explained variance of the first axis is high (64.1%).

Figures

Fig. 36: PCA of 14 morphometric parameters (females) and six parameters (males). Brown dot = A. fratella; red dot: A mirna. Abbreviations of biplot parameters see Table 1.