Photo 12A. Leaf mine initiated by first-stage larvae; usually the first visible evidence indicating hatch of eggs.

Photo 12A.
Leaf mine initiated by first-stage larvae; usually the first visible evidence indicating hatch of eggs.

 
Photo 12B. Two larval mines from a single group of eggs; occurs only occasionally.

Photo 12B.
Two larval mines from
a single group of eggs;
occurs only occasionally.

 
Photo 12C. Mined leaf typical of late-stage larvae.

Photo 12C.
Mined leaf typical
of late-stage larvae.