FIGURE 5. Hydrochus ducalis Knisch, habitus and male genitalia of paralectotype.Published as part of Perkins, Philip D., 2019, Type designations for Neotropical water beetles in the genus Hydrochus Leach 1817 (Coleoptera: Hydrochidae), pp. 149-167 in Zootaxa 4701 (2) on page 156, DOI: 10.11646/zootaxa.4701.2.2, http://zenodo.org/record/355792
FIGURE 25. Hydrochus argutissimus n. sp., habitus and male genitalia.Published as part of Perkins, P...
FIGURES 19–20. Habitus and male genitalia of holotypes. 19. Hydrochus elineae Makhan, non-type. 20. ...
FIGURE 27. Hydrochus kellymilleri n. sp., habitus and male genitalia of holotype.Published as part o...
FIGURE 4. Hydrochus ducalis Knisch, habitus and male genitalia of lectotype.Published as part of Per...
FIGURE 6. Hydrochus metallipes Knisch, habitus and male genitalia of lectotype.Published as part of ...
FIGURE 5. Hydrochus bisinuatus n. sp., habitus and male genitalia of holotype.Published as part of P...
FIGURE 1. Dorsal habitus of Hydrochus species.Published as part of Perkins, Philip D., 2019, Taxonom...
FIGURE 2. Dorsal habitus of Hydrochus species.Published as part of Perkins, Philip D., 2019, Taxonom...
FIGURE 30. Hydrochus purpureus Knisch, habitus and male genitalia of non-type.Published as part of P...
FIGURE 6. Hydrochus maximus n. sp., habitus and male genitalia of holotype.Published as part of Perk...
FIGURES 44–45. Habitus and male genitalia of holotypes. 44. Hydrochus longissimus n. sp. 45. Hydroch...
FIGURE 9. Hydrochus lescheni n. sp., habitus and male genitalia of holotype.Published as part of Per...
FIGURE 17. Hydrochus basilaris n. sp., habitus and male genitalia of holotype.Published as part of P...
FIGURES 12A–E. Labels of lectotypes. (A) Hydrochus ducalis Knisch; (B) Hydrochus drakei Knisch; (C) ...
FIGURE 14. Hydrochus variabilis Knisch, habitus and male genitalia.Published as part of Perkins, Phi...
FIGURE 25. Hydrochus argutissimus n. sp., habitus and male genitalia.Published as part of Perkins, P...
FIGURES 19–20. Habitus and male genitalia of holotypes. 19. Hydrochus elineae Makhan, non-type. 20. ...
FIGURE 27. Hydrochus kellymilleri n. sp., habitus and male genitalia of holotype.Published as part o...
FIGURE 4. Hydrochus ducalis Knisch, habitus and male genitalia of lectotype.Published as part of Per...
FIGURE 6. Hydrochus metallipes Knisch, habitus and male genitalia of lectotype.Published as part of ...
FIGURE 5. Hydrochus bisinuatus n. sp., habitus and male genitalia of holotype.Published as part of P...
FIGURE 1. Dorsal habitus of Hydrochus species.Published as part of Perkins, Philip D., 2019, Taxonom...
FIGURE 2. Dorsal habitus of Hydrochus species.Published as part of Perkins, Philip D., 2019, Taxonom...
FIGURE 30. Hydrochus purpureus Knisch, habitus and male genitalia of non-type.Published as part of P...
FIGURE 6. Hydrochus maximus n. sp., habitus and male genitalia of holotype.Published as part of Perk...
FIGURES 44–45. Habitus and male genitalia of holotypes. 44. Hydrochus longissimus n. sp. 45. Hydroch...
FIGURE 9. Hydrochus lescheni n. sp., habitus and male genitalia of holotype.Published as part of Per...
FIGURE 17. Hydrochus basilaris n. sp., habitus and male genitalia of holotype.Published as part of P...
FIGURES 12A–E. Labels of lectotypes. (A) Hydrochus ducalis Knisch; (B) Hydrochus drakei Knisch; (C) ...
FIGURE 14. Hydrochus variabilis Knisch, habitus and male genitalia.Published as part of Perkins, Phi...
FIGURE 25. Hydrochus argutissimus n. sp., habitus and male genitalia.Published as part of Perkins, P...
FIGURES 19–20. Habitus and male genitalia of holotypes. 19. Hydrochus elineae Makhan, non-type. 20. ...
FIGURE 27. Hydrochus kellymilleri n. sp., habitus and male genitalia of holotype.Published as part o...