HARVESTER, HARVESTING SYSTEM, HARVESTING METHOD, HARVESTING PROGRAM AND RECORDING MEDIUM

A harvester includes an inner side map creating section 422b creating inner side map data indicative of a polygonal shape of an unworked area located inside an outer circumference area, the outer circumference area being created in an outer circumference of a field with a circumference reaping work traveling, an initial reference line calculating section 411 calculating from the inner side map data an initial reference line which lies parallel with one side of the unworked area, a subsequent reference line calculating section 412 calculating a subsequent reference line subsequent to the initial reference line, an automated traveling control section 512 executing the automated traveling based on a traveling route comprised of the initial reference line and the subsequent reference line, and a manual traveling control section 511 executing, based on a manual operation signal, a turning transition traveling for transition from automated traveling using the foregoing traveling route to automated traveling using subsequent traveling route.