Here in Tampa (9b) I have no lawn in my yard but my Queen's Wreath (Petrea volubilis) is in full bloom on a large pergola feature in the front yard and its flowers are being worked by butterflies, wasps, beetles, and bees (both honeybees and bumblebees).
Of my five dwarf mango trees only 'Ice Cream' has so far produced several panicles of buds but I don't see any bees, etc. working them yet. Once those buds open there are certainly enough incects working the nearby Petrea that they will find the mango flowers.
OK — HTH
Paul M.
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