Two somewhat similar but not closely related insects, the Large Milkweed Bug (left insect in the composite photo) and the Red Milkweed Beetle. Large Milkweed Bugs are true bugs (order Hemiptera), while Red Milkweed Beetles belong to the order Coleoptera, the largest order of insects. Both species are obligate milkweed consumers, a distinction they share with the caterpillar of the Monarch butterfly. And like the Monarch, they are toxic to predators. Both of these insects can be found at Montrose during the summer by examining clusters of Common Milkweed. Photographed in July 2019.