Figure 9 from: Hamer MT, Marquis AD, Guénard B (2021) Strumigenys perplexa (Smith, 1876) (Formicidae, Myrmicinae) a new exotic ant to Europe with establishment in Guernsey, Channel Islands. Journal of Hymenoptera Research 83: 101-124. https://doi.org/10.3897/jhr.83.66829

Figure 9 Separating Strumigneys perplexa and S. silvestriiAStrumigenys perplexa with ventral petiole spongiform strip indicated (ANTWEB1013915, Benoit Guénard) BS. perplexa showing all scape hairs curved toward apex (ANTWEB1013915, Benoit Guénard) CS. silvestrii indicating lack of ventral petiole spongiform tissue (FMNHINS0000078527, Gracen Brilmyer) DS. silvestrii with 2 or more hairs directed toward scape base (FMNHINS0000078527, Gracen Brilmyer). Pictures available from www.antweb.org.