S. KOREAN WHOLESALE PRICES UP 0.4 PCT IN MAY South Korea's wholesale price index, base 1980, rose 0.4 pct to 127.0 in May after a 1.1 pct rise in April and was 1.5 pct higher than in May 1986, the Bank of Korea said. The May consumer price index, which has the same base, rose 1.4 pct to 149.1 after a 0.3 pct gain in April, for a year-on-year rise of 3.5 pct. Wholesale prices rose 2.0 pct in the first five months of 1986, while consumer prices rose by 3.2 pct. Bank officials said the rises were due to a strong yen which made imports of Japanese parts, raw and intermediary materials more expensive.