Andrena, Fabricius, 1775

Kratochwil, Anselm & I, Canary, 2020, Revision of the Andrena wollastoni group (Hymenoptera, Anthophila, Andrenidae) from the Madeira Archipelago and the Canary Islands: upgrading of three former subspecies and a description of three new subspecies, Linzer biologische Beiträge 52 (1), pp. 161-244 : 231-233

Andrena a. acuta differentiated from A. a. tenoensis, A. a. wildpreti, A. g. gomerensis , and A. g. palmae

- Andrena a. acuta – A. a. tenoensis: The subspecies are separated in the space spanned by shape PC1 and shape PC2 when using 18 morphometric parameters (CL, FL1, FL2, FVL, FVW, HL, HW, LPW, MSW, MTW, POD, PBAL, PSL, and WL) ( Fig. 35d ). The two best ratios plotted are BL/FL1 and LPW/POD using the same 18 morphometric parameters. The cluster of PC1/PC2 and the clusters of the best ratios are separated.

- Andrena a. acuta – A. a. wildpreti: The subspecies are separated in the space spanned by shape PC1 and shape PC2 when using 18 morphometric parameters (CL, FL1, FL2, FVL, FVW, HL, HW, LPW, MSW, MTW, POD, PBAL, PSL, and WL) ( Fig. 35e ). The two best ratios plotted are FVL/PBAL and FVL/MTW using nine morphometric parameters (BL, FL3, FVL, HW, MSW, MTW, PBAL, PSL, and WL). The cluster of PC1/PC2 is partly separated, the clusters of the best ratios are well separated.

- Andrena a. acuta – A. g. gomerensis: The subspecies are separated in the space spanned by shape PC1 and shape PC2 when using 11 morphometric parameters (BL, CL, FL2, FL3, FVL, HW, LPW, MSW, PBAL, POD, and WL) ( Fig. 35f ). The two best ratios plotted are FVL/WL and FL3/POD using the same 11 morphometric parameters. The clusters of PC1/PC2 and of the best ratios are well separated.

- Andrena a. acuta – A. g. palmae: The subspecies are separated in the space spanned by shape PC1 and shape PC2 when using 17 morphometric parameters (BL, CL, FL1, FL2, FL3, FVL, FVW, HL, HW, LPW, MSW, MTW, OCD, OOD, PBAL, PSL, and

WL) ( Fig. 36a ). The two best ratios plotted are FVL/OCD and FVL/OOD using the same 17 morphometric parameters. The clusters of PC1/PC2 and of the best ratios are well separated.

Figures

Fig. 35: Shape PC1 plotted against shape PC2 and the two best plotted ratios of morphometric features: (a) A. lineolata – A. tiaretta, (b) A. lineolata – A. wollastoni, (c) A. tiaretta – A. wollastoni, (d) A. a. acuta – A. a.tenoensis, (e) A. a. acuta – A. wildpreti, and (f) A. a. acuta – A. g. gomerensis.

Fig. 36: Shape PC1 plotted against shape PC2 and the two best plotted ratios of morphometric features: (a) Andrena a. acuta – A. g. palmae, (b) A. a. tenoensis – A. a. wildpreti, (c) A. a. tenoensis – A. g. gomerensis, (d) A. a. tenoensis – A. g. palmae, (e) A. g. gomerensis – A. a. wildpreti, (f) A. g. palmae – A. a. wildpreti.