Emmelina monodactyla (also known as the T-moth or morning-glory plume moth) is a moth of the family Pterophoridae found in Africa, Asia, Europe and North America. It was first described by Carl Linnaeus in 1758.
The moths fly nearly year-round. They are pale russet in colour, with a wingspan of 18–27 millimeters. The colouration is extremely variable, ranging from off-white with indistinct markings to a strong rust brown. The markings may vary considerably in size. The second and third segments are elongate. The caterpillars are greenish-yellow with a broad green band on the back, and a narrow broken yellow line running down the center. Some specimens may also have a wine-red marking on the back. The colour of the pupae may range from green to reddish brown, sometimes with black markings.