Liberal MP Julia Banks has ridiculed calls for her to detail the allegations of bullying and intimidation she made in the days after Malcolm Turnbull's ousting as prime minister.

In a speech to Parliament, the backbencher broke the silence she has maintained since making her bombshell claims and announced she was quitting the marginal seat of Chisholm in Victoria - a long-held Labor seat - which she won in 2016.

Liberal MPs Julia Banks and Julie Bishop during Question Time on Wednesday. Credit:Alex Ellinghausen

Ms Banks did not repeat her claim of bullying and intimidation but instead hit out at "a culture of appalling behaviour" and said the term was an "umbrella descriptor for: bullying, intimidation, harassment, sexual or otherwise, or a lack of integrity."

"In my political journey, a culture of political behaviour has been widespread, pervasive and undermining - like white ants," she told the House of Representatives.