New Small Milkweed Bug (Lygaeus kalmii) Stock Photos. Ernie Hunter has just published a new set of Small Milkweed Bug (Lygaeus kalmii) stock images.These bugs are one of several to live on toxic milkweed.The Monarch Butterfly, Large Milkweed Bug and Milkweed Beetles all consume parts of the milkweed with no ill affects.They all share the same bright orange/red and black warning colours, telling predators to leave them alone. They don't taste good. Eggs are laid on milkweed in the spring. The nymphs look like the adults more as they develop through several instars. Identified by the "X" on their wings, created by the black and orange bands. Click here to see more works by Ernie Hunter.