Black-walnut
Guides
Acrobasis indigenella
Leaf Crumpler
Acrobasis indigenella, the leaf crumpler, is a small snout moth (Pyralidae: Phycitinae) described by Zeller in 1848. It is known from eastern North America, with records extending into central Canada and the north-central United States. The species has a bivoltine life cycle in Illinois and the southeastern United States, with larvae that feed on leaves of Juglandaceae, particularly black walnut, hickories, and pecan. First-generation larvae are notable for skeletonizing leaves and webbing them together into shelters for feeding.
Coleophora juglandella
Coleophora juglandella is a small moth species in the family Coleophoridae, first described by McDunnough in 1946. The species is known only from Canada, specifically Ontario. Its larvae are specialized feeders on black walnut (Juglans nigra) and construct distinctive spatulate leaf cases.
Enchenopa on-juglans-nigra
Enchenopa on-juglans-nigra is a treehopper species in the family Membracidae, named for its association with black walnut (Juglans nigra). Like other members of the genus Enchenopa, it possesses a pronounced pronotal projection that extends over the body. The species was described based on specimens collected from black walnut, distinguishing it from related Enchenopa species that occur on different host plants. It belongs to a complex of morphologically similar species that have been differentiated primarily by host plant associations and subtle morphological differences.