Eastern forktail (Ischnura verticalis) is a small, narrow-winged damselfly. It occurs east of the Rocky Mountains from Quebec and Georgia in the east to Manitoba and New Mexico in the west. It is very common in the northeast and Midwest, present but uncommon in the southern tier of states. It is abundant in Minnesota, where it has been reported in 81 of the state’s 87 counties.
Eastern forktail has three color variations. Adult males are mostly black with green eye spots and pale blue shoulder stripes, sides of the thorax, and tip of the abdomen. Adult females are entirely pale powdery blue with larger blue eyespots and few other noticeable markings. Immature females are black with orange markings.
Eastern forktail may be the most common damselfly in our area, as it is reported to be in and around Chicago.