Antenna. A Merodon hirsutus, outer side, lateral view, male B Merodon hirsutus, inner side, lateral view, male C Merodon hirsutus, dorsal view, male D Merodon hirsutus, outer side, lateral view, female E Merodon kawamurae, outer side, lateral view, male F Merodon kawamurae, inner side, lateral view, male G Merodon kawamurae, dorsal view, male H Merodon kawamurae, outer side, lateral view, female I Merodon medium sp. nov., outer side, lateral view, male J Merodon medium sp. nov., outer side, lateral view, female. Scale bar: 1 mm.