FIGURES 44–45. Habitus and male genitalia of holotypes. 44. Hydrochus longissimus n. sp. 45. Hydrochus casuarius n. sp.Published as part of Perkins, Philip D., 2021, Taxonomy of water beetles in the genus Hydrochus Leach, 1817, from Bolivia, Brazil and Paraguay (Coleoptera: Hydrochidae), pp. 1-93 in Zootaxa 4994 (1) on page 75, DOI: 10.11646/zootaxa.4994.1.1, http://zenodo.org/record/504326
FIGURE 2. Dorsal habitus of Hydrochus species.Published as part of Perkins, Philip D., 2019, Taxonom...
FIGURES 6A–C. (A) Male genitalia of H. ducalis Knisch, with parameres spread, showing shape of aedea...
FIGURE 5. Hydrochus bisinuatus n. sp., habitus and male genitalia of holotype.Published as part of P...
FIGURES 48–49. Habitus and male genitalia of holotypes. 48. Hydrochus sculptissimus n. sp. 49. Hydro...
FIGURES 12–13. Habitus and male genitalia of holotypes. 12. Hydrochus potenspiculatus n. sp. 13. Hyd...
FIGURES 10–11. Habitus and male genitalia of holotypes. 10. Hydrochus usualis n. sp. 11. Hydrochus m...
FIGURES 19–20. Habitus and male genitalia of holotypes. 19. Hydrochus elineae Makhan, non-type. 20. ...
FIGURES 11–12. Habitus and male genitalia of holotypes. 11. Hydrochus perpunctatus n. sp. 12. Hydroc...
FIGURE 1. Dorsal habitus of Hydrochus species.Published as part of Perkins, Philip D., 2019, Taxonom...
FIGURES 21–22. Habitus and male genitalia. 21. Hydrochus beeneni Makhan, non-type Panama. 22. Hydroc...
FIGURES 4A–B. Male genitalia characters of (A) H. pseudosecretus Oliva (ventral); (B) H. sagittarius...
FIGURE 9. Hydrochus lescheni n. sp., habitus and male genitalia of holotype.Published as part of Per...
FIGURES 9–10. Habitus and male genitalia. 9. Hydrochus brianbrowni Makhan. 10. Hydrochus nayaritensi...
FIGURE 27. Hydrochus kellymilleri n. sp., habitus and male genitalia of holotype.Published as part o...
FIGURE 32. Hydrochus collaris n. sp., habitus and male genitalia of holotype.Published as part of Pe...
FIGURE 2. Dorsal habitus of Hydrochus species.Published as part of Perkins, Philip D., 2019, Taxonom...
FIGURES 6A–C. (A) Male genitalia of H. ducalis Knisch, with parameres spread, showing shape of aedea...
FIGURE 5. Hydrochus bisinuatus n. sp., habitus and male genitalia of holotype.Published as part of P...
FIGURES 48–49. Habitus and male genitalia of holotypes. 48. Hydrochus sculptissimus n. sp. 49. Hydro...
FIGURES 12–13. Habitus and male genitalia of holotypes. 12. Hydrochus potenspiculatus n. sp. 13. Hyd...
FIGURES 10–11. Habitus and male genitalia of holotypes. 10. Hydrochus usualis n. sp. 11. Hydrochus m...
FIGURES 19–20. Habitus and male genitalia of holotypes. 19. Hydrochus elineae Makhan, non-type. 20. ...
FIGURES 11–12. Habitus and male genitalia of holotypes. 11. Hydrochus perpunctatus n. sp. 12. Hydroc...
FIGURE 1. Dorsal habitus of Hydrochus species.Published as part of Perkins, Philip D., 2019, Taxonom...
FIGURES 21–22. Habitus and male genitalia. 21. Hydrochus beeneni Makhan, non-type Panama. 22. Hydroc...
FIGURES 4A–B. Male genitalia characters of (A) H. pseudosecretus Oliva (ventral); (B) H. sagittarius...
FIGURE 9. Hydrochus lescheni n. sp., habitus and male genitalia of holotype.Published as part of Per...
FIGURES 9–10. Habitus and male genitalia. 9. Hydrochus brianbrowni Makhan. 10. Hydrochus nayaritensi...
FIGURE 27. Hydrochus kellymilleri n. sp., habitus and male genitalia of holotype.Published as part o...
FIGURE 32. Hydrochus collaris n. sp., habitus and male genitalia of holotype.Published as part of Pe...
FIGURE 2. Dorsal habitus of Hydrochus species.Published as part of Perkins, Philip D., 2019, Taxonom...
FIGURES 6A–C. (A) Male genitalia of H. ducalis Knisch, with parameres spread, showing shape of aedea...
FIGURE 5. Hydrochus bisinuatus n. sp., habitus and male genitalia of holotype.Published as part of P...