Ungla siderocephala (Navás): Male abdomen and terminalia, (a) segments A6–terminus, lateral (b) terminalia, lateral (c) gonarcus, posterodorsal (d) gonarcus, dorsal (e) gonarcus, lateral. c.c. callus cerci d.ap. apodeme on ventral margin of T9+ectoproct gsac gonosaccus g.ap. gonarcal apodeme g.br. gonarcal bridge mu mediuncus pr unarticulated process on frontal margin of gonarcal apodeme sp spiracle S8+9 fused eighth and ninth sternites s.p. setose subanal plate T6 sixth tergite T9+e fused ninth tergite and ectoproct v.ap. apodeme on dorsal margin of S8+9 (all: Lima, Peru, USNM).