FIGURE 4 in Diurnal hawk moth pollination of Melampyrum koreanum (Orobanchaceae) and the origin of this endemic Korean species

FIGURE 4. Diurnal hawk moth pollination on the M. koreanum Flowers. A) A hawk moth with long proboscis approaching to the flower of M. koreanum. B) A hawk moth close contact to the nectary on the floral tube. C) The head of hawk moth touch to the stigma and anthers which are located on the inside of upper lips of flower. White pollen grains are deposited over the head areas of the hawk moth at this stage of pollination. D) The hawk moth visiting another flower with a lot of white pollen grains over his (her) head area including antenna and proboscis.