Schematic representation of the various types of propodeal sculpture and areolation in New World species of Synaldis A propodeum with median longitudinal carina and transverse carinae incomplete, short B propodeum with median longitudinal carina complete and transverse carinae incomplete C propodeum mainly smooth, with median longitudinal carina and transverse carinae complete D propodeum mainly rugose, with median longitudinal carina and transverse carinae complete (areola absent) E propodeum with areola and transverse carinae complete (median longitudinal carina absent) F propodeum with areola and transverse carinae complete, median longitudinal carina incomplete, basal (not extending inside the areola) G propodeum with areola and transverse carinae complete, median longitudinal carina incomplete apically, reaching mid-areola H propodeum with areola, median longitudinal carina and transverse carinae complete. Abbreviations: lc – lateral carina, mlc – median longitudinal carina, ps – propodeal spiracle, tc – transverse carina.