Weirs, R.W.Ophardt, D.2016-03-212018-09-062016-03-212018-09-061980retrieved from: http://nysipm.cornell.edu/factsheets/treefruit/pests/stlm/stlm.pdfhttps://hdl.handle.net/1813/43130NYS IPM Type: Fruits IPM Fact SheetSpotted lentiform leafminer (STLM) was first used to name P. blancardella but has been ascribed to and describes the injury to apple leaves caused by all five species. P. blancardella, of European origin, and the two native species, P. crataegella and P. malimalifoliella, are found in the eastern United States and Canada. P. blancardella has a more northerly range while the native species are more common further south. P. sorbi and P. mespilella are European species that have been introduced into Oregon and California, respectively.en-USAgricultural IPMFruitsTree FruitApplesfact sheet