Chrysendeton nigrescens is a moth in the Crambidae family. It is found on North America, where it has been recorded from Alabama, Florida and Georgia. The habitat consists of pitcher plant bogs. The length of the forewings is 3.7-4.1 mm for males and 4.3-5.2 mm for females. The forewings are fuscous. The central wing area borders a white dorsal margin, which is overlaid with fuscous scales. The apical quarter of the forewings has a brown wedge, bordered distally by a white wedge. This is followed by an orange wedge. There is a silvery mark on a fuscous field on the tornal area. The hindwings are white, overlaid with fuscous scales. Adults have been recorded on wing from May to June and from August to September.