14bp deletion within Treh, resulting in a frameshift that causes a premature stop codon affecting all predicted isoforms.
lethal - all die during first instar larval stage
TrehIV-9 is rescued by TrehTag:HA
Two copies of TrehT:Ivir\HA1 are needed to rescue lethality in TrehIV-9/TrehIV-9 mutants.