Aphid (likely black bean aphid)

Colonies occur on tender stems, flower spikes, and undersides of leaves, especially on ornamentals and broad-leaved plants. They are common in gardens, fields, and greenhouses.

Pierces phloem tissue with a stylet and drinks plant sap. Feeding can cause curling, yellowing, wilting, sticky honeydew, and sooty mold.

Usually feeds in dense colonies and reproduces rapidly by live birth during favorable seasons; winged forms disperse when crowded or the plant declines. Ants may protect colonies to collect honeydew.

Can weaken plants and transmit plant viruses, though this species is not dangerous to humans. It provides food for lady beetles, lacewings, hoverfly larvae, and parasitoid wasps.