G. it. Ent., 9 (48): 155-158
December 31, 1998
Biologia di Xylocopa (Xylocopa) violacea (Linneo, 1758)
(Hymenoptera: Apidae):
interessanti osservazioni e segnalazioni in Costa Smeralda
e zone limitrofi (Sassari, Sardegna)
di
SALVATORE VICIDOMINI
Abstract - Biology of Xylocopa (Xylocopa) violacea (Linnaeus, 1758) (Hymenoptera: Apidae): interesting observations and records in the Emerald Coast and neighbouring areas (Sassari, Sardinia) - The foraging behaviour on four flower species is described for Xylocopa violacea (L.) (Apidae) in the Emerald Coast (Sassari, Sardinia). Only females forage on Gazania splendens and G. longiscapa (Asteraceae) in August, they collect pollen by "buzzing-pollination". Aptenia cordifolia (Aizoaceae) is visited mainly by females, but on Polygala vulgaris (Polygalaceae) both sexes have been observed. From the specimens sampled it can be pointed out that X. violacea is present in all the Emerald Coast, and 10 locality records are new.
