FIGURE 18 Antenna. Lateral view, A in Systematic position and composition of Merodon nigritarsis and M. avidus groups (Diptera, Syrphidae) with a description of four new hoverfLies species

FIGURE 18 Antenna. Lateral view, A) Merodon longisetus sp. n., male, B) Merodon longisetus sp. n., female, C) Merodon obstipus sp. n., male, D) Merodon obstipus sp. n., female, E) Merodon cohurnus sp. n., male. Scale: 0.5 mm. gl–basoflagellomere.