UPDATE 1-Soccer-Benzema fires Lyon into French Cup last eight

(Recasts after Lyon v Sochaux)

By Julien Pretot

PARIS, March 18 (Reuters) - Karim Benzema's last-gasp goal earned Olympique Lyon a French Cup quarter-final place after a 2-1 home win over holders Sochaux on Tuesday.

The France striker, who also opened the scoring 10 minutes into the second half, struck the winner a minute into added time when he poked home Kader Keita's cross from the right.

Benzema's goal came just two minutes after Kandia Traore had got Sochaux back in the match with an equaliser.

Earlier on Tuesday, two goals by Loris Arnaud gave Paris St Germain a 2-1 win over Ligue 2 Bastia in their last 16 match.

Lyon, who have not lifted the trophy since beating Nantes 2-1 in the 1973 final, have won all four meetings with Sochaux this season after prevailing twice in Ligue 1 and once in the season opening Trophy of Champions.

Lyon went ahead when Benzema collected a defence-splitting Cris pass before beating goalkeeper Teddy Richert from close range but a handling error by Lyon keeper Gregory Coupet from Traore's effort gifted Sochaux an 89th-minute equaliser.

However, a lapse in concentration by Sochaux's defence allowed Lyon to score a deserved second goal as extra time loomed.