This is a pair of banana stalk flies (Telostylinus lineolatus) mating on a …wait minute, that’s not a banana stalk. In fact it’s the spadix of an Anthurium schlechtendalii or Pheasant’s tail.
I had to hunt around a bit to identify the insect, but found useful information at whatsthatbug.com. One thing I liked was where it stated, “With enormous eyes, this tiny, tropical, stilt-legged fly maintains a confident distance from human approach, by swiftly running around the blind-side of whatever surface it is on.” This made me laugh because that was EXACTLY what this pair did when I tried to photograph them.