CREATE TABLE AS inside of a function

So now that I've got my loops working, on to my next newbie question. I've created my function and in it, I want to loop through the results of a select and for each value of my loop counter, I want to create a new table, but I can't figure out how to use a variable in the name of the new table, see below.

CREATE OR REPLACE FUNCTION rgio() RETURNS INTEGER as $$
DECLARE
lv RECORD;

BEGIN
FOR lv IN SELECT DISTINCT rg FROM ldevrg LOOP
CREATE TABLE rgio_$lv AS
SELECT ldev
FROM ldevrg
WHERE rg='$lv';
END LOOP;
RETURN 1;
END;
$$ LANGUAGE plpgsql;

Thanks,
Kevin