Imprecise excision of the P{PZ} element deleting the 5' region of the element and genomic sequences.
Hemizygotes with Df(2L)tkv2 die at the first larval stage. Most homozygous embryos do not have any strong cuticle phenotype except for head defects, although some have Filzkorper defects and show lateral extension of the ventral denticle belt.