1. Subgenus Streptocephalus (Parastreptocephalus) Brendonck, Hamer & Thiéry, 1992
   1. Species Streptocephalus (Parastreptocephalus) archeri (Sars, 1896)
   2. Species Streptocephalus (Parastreptocephalus) kaokoensis Barnard, 1929 (sensu Hamer et al., 1994)
   3. Species Streptocephalus (Parastreptocephalus) lamellifer Thiele, 1900 (sensu Hamer et al., 1994)
   4. Species Streptocephalus (Parastreptocephalus) siamensis Sanoamuang & Saengphan, 2006
   5. Species Streptocephalus (Parastreptocephalus) sudanicus Daday, 1910 (sensu Hamer et al., 1994)
   6. Species Streptocephalus (Parastreptocephalus) zuluensis Brendonk & Hamer, 1992
   7. Species Streptocephalus (Parastreptocephalus) queenslandicus Herbert & Timms, 2000 accepted as Streptocephalus (Parastreptocephalus) archeri (Sars, 1896)
2. Subgenus Streptocephalus (Streptocephalus) Baird, 1852 (sensu Brendonck & Belk, 1997)
   1. Species Streptocephalus (Streptocephalus) annanarivensis Thiele, 1907
   2. Species Streptocephalus (Streptocephalus) antillensis Mattox, 1950 (sensu Maeda-Martínez et al., 1995)
   3. Species Streptocephalus (Streptocephalus) bidentatus Hamer & Appleton, 1993
   4. Species Streptocephalus (Streptocephalus) bimaris Gurney, 1909
   5. Species Streptocephalus (Streptocephalus) bourquinii Hamer & Appleton, 1993
   6. Species Streptocephalus (Streptocephalus) bouvieri Daday, 1908 (sensu Hamer et al., 1994)
   7. Species Streptocephalus (Streptocephalus) cafer (Lovén, 1847) (sensu Hamer et al., 1994)
   8. Species Streptocephalus (Streptocephalus) caljoni Beladjal, Mertens & Dumont, 1996
   9. Species Streptocephalus (Streptocephalus) cirratus Daday, 1908 (sensu Hamer et al., 1994)
   10. Species Streptocephalus (Streptocephalus) cladophorus Barnard, 1924 (sensu Hamer et al., 1994)
   11. Species Streptocephalus (Streptocephalus) coloradensis Dodds, 1915 (sensu Rogers, 2014)
   12. Species Streptocephalus (Streptocephalus) coomansi Brendonk & Belk, 1993
   13. Species Streptocephalus (Streptocephalus) dendrophorus Hamer & Appleton, 1993
   14. Species Streptocephalus (Streptocephalus) dendyi Barnard, 1929 (sensu Hamer et al., 1994)
   15. Species Streptocephalus (Streptocephalus) dichotomius Baird, 1860 (sensu Velu & Munuswamy, 2005)
   16. Species Streptocephalus (Streptocephalus) distinctus Thiele, 1907 (sensu Hamer et al., 1994a)
   17. Species Streptocephalus (Streptocephalus) dorothae Mackin, 1942 (sensu Maeda-Martínez et al., 1995)
   18. Species Streptocephalus (Streptocephalus) dregei Sars, 1899 (sensu Hamer et al., 1994)
   19. Species Streptocephalus (Streptocephalus) echinus Bond, 1934 (sensu Velu & Munuswamy, 2005)
   20. Species Streptocephalus (Streptocephalus) gracilis Sars, 1898 (sensu Hamer et al., 1994)
   21. Species Streptocephalus (Streptocephalus) guzmani Maeda-Martínez, Belk, Obregon-Barbóza & Dumont, 1995
   22. Species Streptocephalus (Streptocephalus) henridumontis Maeda-Martínez, Obregon-Barbóza, Prieto-Salazar & García-Velazco, 2005
   23. Species Streptocephalus (Streptocephalus) indistinctus Barnard, 1924 (sensu Hamer et al., 1994)
   24. Species Streptocephalus (Streptocephalus) kargesi Spicer, 1985 (sensu Maeda-Martínez et al., 1995)
   25. Species Streptocephalus (Streptocephalus) linderi Moore, 1966 (sensu Maeda-Martínez et al., 1995)
   26. Species Streptocephalus (Streptocephalus) longimanus Bond, 1934 (sensu Velu & Munuswamy, 2005)
   27. Species Streptocephalus (Streptocephalus) mackini Moore, 1966 (sensu Maeda-Martínez et al., 1995)
   28. Species Streptocephalus (Streptocephalus) macrourus Daday, 1908 (sensu Hamer et al., 1994)
   29. Species Streptocephalus (Streptocephalus) mattoxi Maeda-Martínez, Belk, Obregon-Barbóza & Dumont, 1995
   30. Species Streptocephalus (Streptocephalus) moorei Belk, 1973 (sensu Maeda-Martínez et al., 2005)
   31. Species Streptocephalus (Streptocephalus) namibiensis Hamer & Brendonck, 1993
   32. Species Streptocephalus (Streptocephalus) neumanni Thiele, 1904 (sensu Hamer et al., 1994)
   33. Species Streptocephalus (Streptocephalus) ovamboensis Barnard, 1924 (sensu Hamer et al., 1994a)
   34. Species Streptocephalus (Streptocephalus) papillatus Sars, 1906 (sensu Hamer et al., 1994)
   35. Species Streptocephalus (Streptocephalus) potosinensis Maeda- Martínez, Belk, Obregon-Barbóza & Dumont, 1995
   36. Species Streptocephalus (Streptocephalus) probiscideus (Frauenfeld, 1873) (sensu Brendonck, 1989)
   37. Species Streptocephalus (Streptocephalus) purcelli Sars, 1898 (sensu Hamer et al., 1994)
   38. Species Streptocephalus (Streptocephalus) reunionensis Thiéry & Champaneau, 1994
   39. Species Streptocephalus (Streptocephalus) rothschildi Daday, 1908 (sensu Hamer et al., 1994)
   40. Species Streptocephalus (Streptocephalus) rubricaudatus (Klunzinger, 1867) (sensu Hamer et al., 1994)
   41. Species Streptocephalus (Streptocephalus) rugosus Brehm, 1960
   42. Species Streptocephalus (Streptocephalus) sahyadriensis Rogers & Padhye, 2014
   43. Species Streptocephalus (Streptocephalus) sealii Ryder, 1879 (sensu Rogers, 2014)
   44. Species Streptocephalus (Streptocephalus) shinsawbuae Shu, Rogers, Chen & Sanoamuang, 2018
   45. Species Streptocephalus (Streptocephalus) similis Baird, 1852 (sensu Maeda-Martínez et al., 1995)
   46. Species Streptocephalus (Streptocephalus) simplex Gurney, 1906 (sensu Velu & Munuswamy, 2005)
   47. Species Streptocephalus (Streptocephalus) sirindhornae Sanoamuang, Murugan, Weekers & Dumont, 2000
   48. Species Streptocephalus (Streptocephalus) spinicaudatus Hamer & Appleton, 1993
   49. Species Streptocephalus (Streptocephalus) spinifer Gurney, 1906 (sensu Velu & Munuswamy, 2005)
   50. Species Streptocephalus (Streptocephalus) spinosus 1908 (sensu Hamer et al., 1994)
   51. Species Streptocephalus (Streptocephalus) texanus Packard, 1871 (sensu Maeda-Martínez et al., 1995)
   52. Species Streptocephalus (Streptocephalus) thomasbowmani Maeda-Martínez, Obregon-Barbóza, Prieto-Salazar & García-Velazco, 2005
   53. Species Streptocephalus (Streptocephalus) torvicornis (Waga, 1842) (sensu Hamer et al., 1994)
   54. Species Streptocephalus (Streptocephalus) trifidus Hartland-Rowe, 1969 (sensu Hamer et al., 1994)
   55. Species Streptocephalus (Streptocephalus) vitreus (Brauer, 1877) (sensu Hamer et al., 1994)
   56. Species Streptocephalus (Streptocephalus) wirminghausi Hamer, 1994
   57. Species Streptocephalus (Streptocephalus) woottoni Eng, Belk & Eriksen, 1990 (sensu Maeda-Martínez et al., 1995)
   58. Species Streptocephalus (Streptocephalus) zeltneri Daday, 1910 (sensu Hamer et al., 1994a)
   59. Species Streptocephalus (Streptocephalus) americanus Pesta, 1921 accepted as Streptocephalus (Streptocephalus) sealii Ryder, 1879 (sensu Rogers, 2014)
   60. Species Streptocephalus (Streptocephalus) areva Brehm, 1954 accepted as Streptocephalus (Streptocephalus) torvicornis (Waga, 1842) (sensu Hamer et al., 1994)
   61. Species Streptocephalus (Streptocephalus) auritus Brehm, 1954 accepted as Streptocephalus (Streptocephalus) torvicornis (Waga, 1842) (sensu Hamer et al., 1994)
   62. Species Streptocephalus (Streptocephalus) B Maeda-Martínez et al., 1995 accepted as Streptocephalus (Streptocephalus) guzmani Maeda-Martínez, Belk, Obregon-Barbóza & Dumont, 1995
   63. Species Streptocephalus (Streptocephalus) bowmani Daniels, Hamer & Rogers, 2004 (unaccepted > nomen nudum)
   64. Species Streptocephalus (Streptocephalus) bucheti Daday, 1910 accepted as Streptocephalus (Streptocephalus) torvicornis (Waga, 1842) (sensu Hamer et al., 1994)
   65. Species Streptocephalus (Streptocephalus) C Maeda-Martínez et al., 1995 accepted as Streptocephalus (Streptocephalus) mattoxi Maeda-Martínez, Belk, Obregon-Barbóza & Dumont, 1995
   66. Species Streptocephalus (Streptocephalus) D Maeda-Martínez et al., 1994 accepted as Streptocephalus (Streptocephalus) potosinensis Maeda- Martínez, Belk, Obregon-Barbóza & Dumont, 1995
   67. Species Streptocephalus (Streptocephalus) dumonti Daniels et al., 2004 (unaccepted > nomen nudum)
   68. Species Streptocephalus (Streptocephalus) floridanus Packard, 1880 accepted as Streptocephalus (Streptocephalus) sealii Ryder, 1879 (sensu Rogers, 2014)
   69. Species Streptocephalus (Streptocephalus) type-A Moore, 1958 accepted as Streptocephalus (Streptocephalus) mackini Moore, 1966 (sensu Maeda-Martínez et al., 1995)
   70. Species Streptocephalus (Streptocephalus) watsoni Packard, 1877 accepted as Streptocephalus (Streptocephalus) texanus Packard, 1871 (sensu Maeda-Martínez et al., 1995)
   71. Species Streptocephalus (Streptocephalus) chappuisi Brehm, 1935 (uncertain > nomen dubium, Types are immatures, cannot be identified)
   72. Species Streptocephalus (Streptocephalus) lahorensis Ghauri & Lahoon, 1980 (uncertain > nomen dubium)
3. Species Streptocephalus wolof Sainz-Escudero, Alonso & Sanchez-Vialas, 2022
4. Species Streptocephalus cervicornis Weltner, 1890 accepted as Dendrocephalus (Dendrocephalus) cervicornis (Weltner, 1890) (sensu Pereira, 1983)
5. Species Streptocephalus dubius Wolf (unaccepted > nomen nudum, undescribed (see Forró & Brtek, 1984))
6. Species Streptocephalus gauthieri Brtek, 1974 (unaccepted > nomen nudum, Name based on drawing and partial description in Gauthier (1939); no material examined or deposited)
7. Species Streptocephalus hardingi Qadri & Baqai, 1956 accepted as Branchinella (Branchinellites) hardingi (Qadri & Baqai, 1956) (sensu Rogers, 2006)
8. Species Streptocephalus karachiensis Qadri & Baqai, 1956 accepted as Branchinella (Branchinellites) maduraiensis (Raj, 1951)
9. Species Streptocephalus jakubskii Grochmalicki, 1921 (uncertain > taxon inquirendum, Types are immatures)
10. Species Streptocephalus javaensis Brehm, 1955 (uncertain > nomen dubium, Types are immatures and appear to be at least two species)
11. Species Streptocephalus propinquus Brady, 1916 (uncertain > nomen dubium, Types are immatures)

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