Phylogenetic systematics of the genera Plochionocerus Dejean and Agrodes Nordmann (Coleoptera: Staphylinidae: Xantholinini) Author Asiain, Julieta Author Márquez, Juan Author Morrone, Juan J. text Zootaxa 2007 1584 1 53 journal article 10.5281/zenodo.178410 ba2b7965-13f3-401f-9c5a-1705938112ea 1175-5326 178410 Key to Plochionocerus and related genera 1. Head with lateroventral furrows ( Fig. 15 ), ventral surface with expanded, umbilicate punctures ( Figs. 50, 51, 53 ; except P. hermani , Fig. 52 ); elytral hind margin with depression or notch ( Fig. 59 ) .............. ........................................................................................................................................... Plochionocerus 1’. Head without lateroventral furrows ( Figs. 10, 16 ), ventral surface lacking expanded, umbilicate punctures, ( Figs. 48 , 67 ); elytral hind margin without depression or notch ( Fig. 58 ) ..................................... 2 2(1’). Head more than 1.5 times as long as wide (1.54–2.00 times; Fig. 3 ), with lateral margins convex ( Fig. 10 ); fore margin of labrum with two pairs of small, lateral teeth and one pair of central, larger teeth ( Fig. 37 ); apical palpomere of labium elongate ( Fig. 42 ); prosternum slightly oblong (length/width ratio 1.04–1.20; Fig. 67 ) ........................................................................................................................ Agrodes 2’. Head 1.5 times or less as long as wide ( Fig. 4 ), lateral margins with a flat or depressed area delimited by two carinae ( Fig. 16 ); fore margin of labrum with two pairs of lobes or teeth of variable length ( Fig. 33 ); apical palpomere of labium slightly widened toward apex ( Fig. 41 ); prosternum transverse (length/ width ratio 0.65–0.88) ...................................................................................................................... Renda