Andrena acuta acuta

Kratochwil, Anselm, Schwabe, Angelika & I, Canary, 2020, Flower-visiting behaviour and habitats of the taxa of the Andrena wollastoni group (Hymenoptera, Anthophila, Micrandrena) on the Canary Islands compared to the Madeira Archipelago *, Linzer biologische Beiträge 52 (1), pp. 309-326 : 315-316

Andrena acuta acuta

This subspecies occurs in the Anaga region, in the area of the formerly separated Anaga Island. A. a. acuta was detected in the subhumid vegetation complex Ixantho viscosae- Lauro azoricae sigmion (IIB) and in the barrancos on the northeastern slope of the Anaga mountains, as well as on the northwestern slope (IIA: Mayteno canariensis-Junipero phoeniceae sigmion). According to the data, the main period of activity is March and April, and the main altitudes reach from about 100 to 900 m a.s.l. Actually, the area in the laurel forest zone has only a few occurrences of pollen and nectar resources for A. a. acuta . The classical site, e.g., of the holotype and one of the paratypes (Cruz del Carmen), has been modified by soil sealing and building of touristic infrastructures.

The analysis of flower visits (10♀♀, 3♂♂) is based on data from HOHMANN et al. (1993) (n = 9) and our own data (n = 4):

F e m a l e s: Asteraceae (n = 2): Calendula arvensis , N (n = 1); Calendula spec. (n = 1). Boraginaceae (n = 1): Echium plantagineum , N (n =1). Brassicaceae (n = 6): Hirschfeldia incana , N? (n = 6). Fabaceae (n = 1): Spartium junceum , I, after MUER et al. (2016) (n = 1).

M a l e s: Asteraceae (n = 1): Calendula arvensis , N (n = 1). Brassicaceae (n = 1): Descurainia millefolia , EndC (n = 1). Fabaceae (n = 1): Spartium junceum , I, after MUER et al. (2016) (n = 1).