Andrena maderensis, COCKERELL, 1922

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 : 679

1. Andrena maderensis , A. portosanctana , A. notata ( Fig. 33 )

For females, 16 of the 18 parameters could be used for the PCA. LPW and POD were eliminated because of insufficient correlation values (p> 0.05%). Andrena portosanctana and A. maderensis show a clearly separated clustering on the first axis, similarly influenced by most of all the parameters. The value of explained variance is very high (74%). The two females of A. notata are marginally separated from A. portosanctana . OCD and PBAL influence the separation on the second axis. In males, 14 parameters could be used. For males, too, the three species are clearly separated from each other. The value of the explained variance of the first axis is very high (70.1%). The influence of the parameters corresponds to that of the females.

Figures

Fig. 33: PCA of 16 morphometric parameters (females) and 14 parameters (males). Cyan dot = A. portosanctana; green dot: A. maderensis, orange dot: A. notata. Abbreviations of biplot parameters see Table 1.