Key to Old World genera of the Cephenniini 1 Antennae 10-segmented, with terminal antennomere forming large oval club .................. Trurlia Jałoszyński, 2009a - Antennae 11-segmented, gradually thickened or with separated club.......................................................................... 2 2 Basisternum much longer than procoxal cavities ........................................................................... Etelea Csiki, 1909 - Basisternum shorter than procoxal cavities ................................................................................................................. 3 3 Internal margins of procoxae in ventral view hidden under expanded laterally ventral surface of prosternal process. ...................................................................................................................................................................................... 4 - Internal margins of procoxae visible in ventral view, prosternal process missing or its ventral surface not expanded laterally ......................................................................................................................................................................... 5 4 Pronotum with sublateral carinae ................................................................................ Cephennula Jałoszynski, 2008b - Pronotum without sublateral carinae ............................................................................................. Lathomicrus gen. n. 5 Pronotum without foveae.............................................................................................................................................. 6 - Pronotum with ante-basal foveae.................................................................................................................................. 7 6 Antennae with indistinct 3-segmented club......................................................... Cephennium Müller & Kunze, 1822 - Antennae with distinct 2-segmented club ............................................................. Nanophthalmus Motschulsky, 1851 7 Basal elytral foveae, if present, never filled with setae; pronotum usually with four foveae ........................................ ....................................................................................................................................... Cephennomicrus Reitter, 1907 - Basal elytral foveae filled with short and dense setae; pronotum always with two foveae.......................................... 8 8 Prosternal process very short, not protruding ventrally beyond procoxae ................... Hlavaciellus Jałoszyński, 2006 - Prosternal process long, protruding ventrally beyond procoxae ........................................ Cephennodes Reitter, 1884

Published as part of Jałoszyński, Paweł, 2010, Notes on identity of Cephennomicrus sumatranus (Franz) (Coleoptera, Staphylinidae, Scydmaeninae), pp. 25-32 in Zootaxa 2517 on page 28, DOI: 10.5281/zenodo.196159