Jon Gosselin has officially filed the legal papers in Pennsylvania to challenge Kate Gosselin for primary custody of their eight children, TMZ is reporting.

In the court papers, Jon alleges that Kate abuses the custody scheduling laid out through the arbitration process and claims she is not being completely honest about her income.

Gosselin's lawyer, Anthony F. List, argued this week that due to her involvement with 'Dancing With the Stars,' Kate has morphed into an "absentee mom." List adds that her commitments to the show keep her from spending "quality time" with their twins and sextuplets.