Body ring (posterior view) in several Eutrichodesmus species, number inside ring indicated rows of tubercles on metaterga. A–Q Species with mid-dorsal projections on metaterga. A E. anisodentus B E. aster C E. asteroides D E. astriproximus E E. astrisimilis F E. cavernicola G E. deporatus H E. dorsiangulatus I E. lipsae J E. macclurei K E. nodulosus L E. paraster M E. pectinatidentis N E. reclinatus O E. soesilae P E. steineri and Q E. subasteroides R–AA Species without mid-dorsal projections on metaterga R E. apicalis S E. arcicollaris T E. armatocaudatus U E. armatus V E. basalis W E. cambodiensis sp. nov. X E. communicans Y E. curticornis Z E. digitatus and AA E. distinctus. Not to scale. Figures modified from A, M Zhang (1995) B, C, Y, AA Golovatch et al. (2009b) D, E, Q Golovatch et al. (2016) F Sinclair (1901) E, L, P Liu and Wesener (2017) H, S Zhang in Zhang and Wang (1993) I, R Golovatch et al. (2015) J, N Hoffman (1977) K Verhoeff (1939) O Makhan (2010) T, V, X, Golovatch et al. (2009a) U Miyosi (1951) and Z Liu and Tian (2013).