Banchus is een geslacht van insecten uit de familie Ichneumonidae.
Soorten B. agathae Fitton, 1985 B. altaiensis Meyer, 1927 B. apenes Townes, 1978 B. canadensis Cresson, 1868 B. ceratura Townes, 1978 B. cerinus Chandra & Gupta, 1977 B. ciliatus Townes, 1978 B. cinctus Townes, 1978 B. crefeldensis Ulbricht, 1916 B. cressonii (Viereck, 1902) B. dilatatorius (Thunberg, 1822) B. epactius Townes, 1978 B. falcatorius (Fabricius, 1775) B. flavescens Cresson, 1868 B. flavicauda Townes, 1978 B. flavomaculatus (Cameron, 1904) B. gilvus Townes, 1978 B. gudrunae Fitton, 1985 B. hastator (Fabricius, 1793) B. inermis Provancher, 1874 B. insulanus Roman, 1938 B. japonicus (Ashmead, 1906) B. leptoceras Townes, 1978 B. leptura Townes, 1978 B. mauricettae Fitton, 1985 B. mexicanus Cameron, 1886 B. minor Townes, 1978 B. moppiti Fitton, 1985 B. nigroflavus Townes, 1978 B. nigrolineatus (Cameron, 1905) B. nox Morley, 1913 B. nubilus Townes, 1978 B. palpalis Ruthe, 1859 B. pallescens Provancher, 1874 B. pictus Fabricius, 1798 B. polychromus Provancher, 1888 B. poppiti Fitton, 1985 B. punkettai Fitton, 1985 B. robustus Rudow, 1883 B. rufescens Townes, 1978 B. russiator Aubert, 1981 B. sanjozanus Uchida, 1929 B. superbus Cresson, 1865 B. teres Townes, 1978 B. tholus Fitton, 1985 B. tumidus Chandra & Gupta, 1977 B. turcator Aubert, 1981 B. vittosus Townes, 1978 B. volutatorius (Linnaeus, 1758) B. zonatus Rudow, 1883