Family Syrphidae (Flower Flies or Hover Flies)
Guide from @edanko: https://sites.google.com/view/flyguide
"Hoverflies are important pollinators of flowering plants in many ecosystems worldwide. Syrphid flies are frequent flower visitors to a wide range of wild plants, as well as agricultural crops, and are often considered the second-most important group of pollinators after wild bees. However, relatively little research into fly pollinators has been conducted compared with bee species. Bees are thought to be able to carry a greater volume of pollen on their bodies, but flies may be able to compensate for this by making a greater number of flower visits.
Like many pollinator groups, syrphid flies range from species that take a generalist approach to foraging by visiting a wide range of plant species through those that specialize in a narrow range of plants. Although hoverflies are often considered mainly nonselective pollinators, some hoverflies species are highly selective and carry pollen from one plant species. Cheilosia albitarsis is thought to only visit Ranunculus repens.
Specific flower preferences differ among species, but syrphid fly species have repeatedly been shown to prefer white- and yellow-coloured flowers.
Larvae of many hoverfly species prey upon pest insects, including aphids and leafhoppers.
With a few exceptions hoverflies are distinguished from other flies by having a spurious vein, located parallel to their fourth longitudinal wing vein." - Wikipedia
on indian plum. first of season.
not much (any?) pollen on legs.
my gut feeling was bumblebee, but it seemed smaller than most i see
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