Catalpa
...
Discolored, circular leaf spot...Neolasioptera sp.
Spots are about 5 mm in diameter and can be found from May to November...Some larvae drop to the ground to pupate, other pupate in the leaf. Adults were reared in spring from galls collected in November. Host: C. bignonioides...
”- Raymond J. Gagne: (1989) The plant-feeding gall midges of North America©