BE1900D FLC HAS COLLISION WITH ANOTHER ACFT WHILE TAXIING AT PIT.

Narrative

I AND THE FO WERE ASSIGNED TO FLY ABCD. AFTER BOARDING THE PAX AND STARTING THE ENGS; WE CALLED FOR TAXI AND SIGNALED TO THE RAMP AGENT THAT WE WERE READY TO TAXI. THERE WAS A FUEL TRUCK PARKED TO OUR R; FUELING OUR ACFT. INITIALLY; THE RAMPER INDICATED A TURN TO THE R TOWARD THE TRUCK. MY FO INFORMED ME THAT WE DID NOT HAVE ENOUGH ROOM TO TURN BTWN THE TRUCK AND OUR ACFT. I VISUALLY INQUIRED TO THE RAMPER IF WE HAD ENOUGH ROOM TO TURN TO THE L BTWN OTHER ACFT PARKED TO THE L. THE RAMPER GAVE A CURT SHRUG AND SIGNALED WITH HER L WAND FOR US TO TURN IN THAT DIRECTION. I TOOK THIS TO INDICATE THAT WE DID. 1/3 OF THE WAY THROUGH THE L TURN; IT BECAME CLR THAT THE TURN COULD NOT BE MADE. I INITIATED THE STOP. THE RAMPER WHOM I WAS WATCHING NEVER INDICATED TO HALT THE TURN. DURING THE TURN; THE RAMPER CONTINUALLY STEPPED TO OUR R. I HAD TO SHIFT MY VIEW IN THAT DIRECTION TO KEEP HER IN SIGHT. AFTER APPROX 20 SECONDS; SHE GAVE THE SIGNAL TO REVERSE THE TURN TO THE R WHILE CONTINUING TO MOVE IN THAT DIRECTION. I TRACKED BOTH THE RAMP AGENT'S MOVEMENTS AND OUR DISTANCE BTWN A SAAB 340 PARKED DIRECTLY IN FRONT OF US; TO ENSURE CLRNC IN THOSE DIRECTIONS. I EXPECTED THE RAMPER TO HAVE ADEQUATE VISUAL REF OF ALL AREAS THAT I COULD NOT MONITOR WHILE WATCHING HER; WELL R OF ACFT CTRLINE. ONCE AGAIN; SHE NEVER GAVE US THE SIGNAL TO STOP THE ACFT. AS THE ACFT CONTINUED TO TURN R; THE RAMP AGENT CONTINUED TO MOVE R. WE FELT A THUMP WHEN THE L WINGTIP STRUCK THE R WINGTIP OF AN ACFT PARKED. THE RAMPER COMPLETELY LEFT THE AREA AND BEGAN TALKING WITH ANOTHER RAMP AGENT COMPLETELY DISREGARDING HER DUTIES TO PROVIDE SAFE SEPARATION BTWN ACFT. THE STROBE LIGHT ON OUR ACFT'S L WINGTIP WAS DAMAGED; AS WAS THE STROBE LIGHT AND WINGTIP OF THE OTHER ACFT.