Long-Horned Bees and Sun-Flower Bees (Genera Melissodes and Svastra) Long-horned bees all belong to the Tribe Eucerini, and are the most diverse group in the Family Apidae. They include several closely related genera of bees with similar appearances, including: Eucera, Melissodes, Cemolobus, Svastra (sunflowers bees), Peponapis (squash bees), and Xenoglossa (squash bees). Svastra bees are often referred to as sunflower bees, since they heavily feed … Continue reading Long-Horned Bees