World species of the genus Endomychus are reviewed, keyed and illustrated. The following new synonyms are proposed: Endomychus coccineus (Linnaeus, 1758) (=Endomychus quadripunctatus Gorham, 1873); E. atripes Pic, 1921 (=E. curtus Pic, 1927); E. quadra (Gorham, 1887) (=E. ohbayashii Nakane, 1951; =E. ohbayashii shirahatai Nakane, 1951; -E. ohbayashii kojimai Nakane, 1994) E. plagiatus (Gorham, 1887) (=E. plagiatus interruptus Nakane, 1994); E. gorhami (Lewis, 1874) (=E. gorhami kyushuensis Sasaji, 1978). The following new status is proposed: E. punctatus Arrow, 1928 (=E. divisus punctatus Arrow, 1928). Lectotypes are designated for Endomychus armeniacus Motschulsky, E. atripes Pic, E. curtus Pic, E. divisus Arrow, E. divisus punctatus Arrow, E. tonkineus Pic, Caenomychus humeralis Pic, C. muelleri Mader, and Cyanauges nigropiceus Gorham. Seven new species are described: Endomychus pakistanlcus (Pakistan), E. micrus (Pakistan), E. mroczkowskii (E. Nepal), E. yunnani (China: Yunnan), E. slipinskii (N. Burma), E. rogeri (Vietnam) and E. agatae (India: Assam). Distribution, nomenclatural history and diagnoses are provided for each species. Endomychus rufipes Pic and E. nigripes Mader, are treated here as species incertae sedis because of insufficient descriptions and unavailable material.