fxSi13 [synthetic guide site1::3'(delta)HygR::unc-54 3' UTR::Lox2272 (III:10158855)]. fxSi13 is a CRISPR-engineered site in the N2 background for future transgene insertion via CRISPR utilizing a synthetic guide site (GTCCAGCGGCAGATCGGCGGAGG) with a split hygromycin resistance selection marker; fxSi13 also introduced a small deletion of genomic sequence at the insertion site (III:10158856-10158894).