Anteriodorsal views of Rugitermes soldier heads from South America. Margins of left frontolateral ridges enhanced. A R. bicolor, PU946 B R. flavicinctus, TT88 C R. laticollis, EC1465 D R. magninotus, PU1087 E R. occidentalis, AG380 F R. niger, AG500 G R. nodulosus (modified from fig. 14, Krishna 1961) H R. rugosus PA1186. Accession numbers from UFTC (Scheffrahn 2019b). Scale bars: 1 mm.