Male genitalia. A Merodon defectus sp. nov., epandrium, lateral view B Merodon defectus sp. nov., epandrium, ventral view C Merodon serrulatus, epandrium, ventral view D Merodon defectus sp. nov., hypandrium, lateral view E Merodon hirsutus, epandrium, lateral view F Merodon hirsutus, epandrium, ventral view G Merodon hirsutus, hypandrium, lateral view, H Merodon opacus sp. nov., epandrium, lateral view I Merodon opacus sp. nov., epandrium, ventral view J Merodon opacus sp. nov., hypandrium, lateral view. Abbreviations: al–anterior surstyle lobe, bp–basolateral protrusion, c–cercus, l–lingula, pl–posterior surstyle lobe. Scale bar: 0.2 mm.