Methods of the disclosed precision guided sterile insect technique (pgSIT) include methods for directing male sexing in a genetically modified insect and methods of producing a progeny of genetically modified sterile male insect egg. These methods include integrating at least one nucleic acid sequence into a genome of a first insect, the at least one nucleic acid sequence having at least one first guide polynucleotide targeting a female-essential genomic sequence that is required for female-specific viability, introducing an endonuclease into a second insect, and genetically crossing the first insect and the second insect thereby producing progeny expressing the endonuclease and the at least one nucleic acid sequence. For male sterility a second guide polynucleotide targets a male sterility genomic sequence that is required for male-specific sterility.
