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each nectar. It is unlikely that pollen was deposited on the body, but some may have
rubbed off onto the proboscis; no voucher was collected.
Two syrphid fly species were seen collecting pollen at Oribi Gorge and another syrphid
species did the same at Umtamvuna. The apinid bee Allodape pernix was regularly
seen robbing nectar at the base of the corolla of P. petiolaris at Umtamvuna, with about
25% of corollas pierced in this way. These bees crawled onto the lower lip and around
the outside to the base of the flower. The small halictinid bee Lasioglossum sp. crawled
into the corolla tube to access nectar at Oribi Gorge. A few individuals of a pierid
butterfly species were seen probing for nectar at Umtamvuna, but these made no
contact with the style or anthers of the flowers.
Insect vouchers
Amegilla caelestina (Apidae)
Potgieter 13 UNR, 15-2-95
Potgieter 47 PMB Gdn, 7-4-94
Potgieter 84 OG, 10-1-97
Potgieter 115 OG, 20-4-97
Potgieter 174
A. mimadvena (Apidae)
OG, 2-4-98
Potgieter 14 UNR, 14-3-96
Potgieter 15 UNR, 16-3-96
Potgieter 61 OG, 12-5-96
Potgieter 112 OG, 20-4-97
Xylocopa hottentotta (Apidae)
Potgieter 16 UNR, 15-2-96
Potgieter 26 UNR, 11-5-96
Amegilla bothai (Apidae)
Potgieter 81 OG, 10-1-97
Potgieter 82
Amegilla caelestina
NV
OG, 10-1-97
Stenobasipteron wiedemanni
NV
Asarkina sp. (Syrphidae)
Potgieter 60 UNR, 11-5-96
Appendix/ 149
P. petiolaris