Trichocorixa orinocoensis Sailer, 1948

FIGURES 9–13. Corixidae. 9A–B. Trichocorixa. A. Head, frontal view. B. Female forewing (adapted from Moreira et al. 2018). 9C–D. Trichocorixa orinocoensis. C. Male foreleg. D. Apex of male abdomen, dorsal view (adapted from Hungerford 1948). 10A–C. Heterocorixa. A. Head, frontal view. B. Female forewing (adapted from Moreira et al. 2018). C. Metaxyphus (adapted from Nieser 1975). 11A–C. Heterocorixa boliviensis. A. Male foreleg. B. Apex of male abdomen, dorsal view. C. Left paramere (adapted from Hungerford 1948). 12A–C. Heterocorixa chapadiensis. A. Male foreleg (adapted from Nieser 1975). B. Apex of male abdomen, dorsal view. 13C. Left paramere (adapted from Hungerford 1948). 13A–B. Heterocorixa hesperia hesperia. A. Apex of male abdomen, dorsal view (adapted from Hungerford 1948). B. Metaxyphus (adapted from Nieser 1975). Abbreviations: CLA, apex of clavus; LBM, labium; NDF, nodal furrow; SUT, hypo-ocular suture.