A BE350 ENTERED RWY 25L ON TXWY G AFTER MISSING THE HOLD SHORT LINE. A NEW TXWY AC AND CONFUSION AT THE IRREGULAR INTXN OF WG; G; AND RWY 25R MAY HAVE BEEN A FACTOR.

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AFTER LNDG ON RWY 24R; I WAS GIVEN A LONG TAXI TO THE FBO ON THE OPPOSITE SIDE OF THE ARPT; WITH 3 HOLDS FOR TFC. EVENTUALLY; I WAS CLRED TO CROSS RWY 25R AT TXWY G; HOLD SHORT OF RWY 25L. AFTER XING TXWY AC (CTR TXWY BTWN RWYS 25L AND 25R); I BEGAN LOOKING FOR THE HOLD SHORT MARKINGS AT RWY 25L. I STOPPED WHEN I REALIZED THE WHITE RWY EDGE LINE WAS ABOUT 100 FT AHEAD; AND THE HOLD SHORT LINE WAS NOW BEHIND ME; AT THE S BOUNDARY OF THE CTR TXWY. I HAD ANTICIPATED SEEING THE HOLD SHORT MARKINGS CLOSER TO THE RWY; AND WAS NOT EXPECTING IT SO CLOSE TO THE S 'WEDGE' OF THE TXWY (ON SCALED AERIAL PHOTOS; AND THE HOLD SHORT MARKINGS APPEAR TO BE APPROX 220 FT FROM THE RWY EDGE). AT THAT MOMENT THE TWR CTLR CALLED AND ADVISED I WAS PAST THE HOLD LINE; AND INSTRUCTED AN ARRIVING LEAR TO GO AROUND. AT THE TIME OF THE GAR; THE LEAR WAS ABOUT OVER THE RWY THRESHOLD; ABOUT 3000 FT E OF TXWY G. ALTHOUGH I HAVE LANDED AT LAX MANY TIMES IN THE PAST; THIS WAS THE FIRST TIME I HAD ARRIVED SINCE TXWY AC HAS BEEN IN SVC; AND I WAS UNFAMILIAR WITH ITS PROX TO THE PARALLEL RWYS. I SUSPECT MY FOCUS ON NAVING THE IRREGULAR SHAPE OF THE INTXN OF HIGH SPD TXWY WG; TXWY G; AND RWY 25R MAY HAVE DISTR ME FROM SEEING THE RWY 25L HOLD SHORT MARKINGS AT THE S EDGE OF TXWY AC. I'M NOT SURE WHAT COULD PREVENT A RECURRENCE. IN FACT; THERE IS A NOTE ON THE ARPT DIAGRAM READING 'CAUTION: BE ALERT TO RWY XING CLRNCS.' I PRESUMED THIS WAS MEANT FOR VERY LARGE ACFT. NOW I KNOW ITS INCLUSION APPLIES TO EVERYONE!