Each of its four species lay eggs on the leaves of the Celtis occidentalis tree.

For the tree, see Celtis occidentalis, more commonly known as the common hackberry.

The larvae feed on Celtis occidentalis.

One of the most common trees to form these odd growths is hackberry (Celtis occidentalis).

Celtis occidentalis (N)

Celtis occidentalis (northern hackberry)

Celtis occidentalis, commonly known as the Common hackberry, is a medium-size deciduous tree native to North America.

The bark of this tree, hackberry (Celtis occidentalis), is gray, with corky warts and ridges breaking up a smooth background.

Riparian areas were dominated by eastern cottonwood, hackberry (Celtis occidentalis), and silver maple (Acer saccharinum).

It is less tolerant than elm, boxelder (Acer negundo), sweetgum, hackberry (Celtis occidentalis), and ash, but is more tolerant than eastern cottonwood and black willow.

The larvae feed on Prunus (including Prunus serotina), Malus, Syringa vulgaris, Amelanchier nantuckensis and Celtis occidentalis.

Often confused with the related species Celtis pallida, the spiny hackberry or desert hackberry, Celtis occidentalis, the common hackberry, and Celtis laevigata, the sugarberry or southern hackberry.