Hemitrochostoma spp., external male genitalia. 16–21 H. altilabris Bergroth, 1913 22–23 H. rutabulum sp. n. 16–17, 22–23 left paramere 18 phallus, lateral view 19 same, dorsal view, articulatory apparatus and most of aedeagus removed 20 same, ventral view 21 articulatory apparatus. Lettering: aed = aedeagus, bp = basal plates, cp-I, cp-II1, cp-II2 = conjunctival processes (see text), dej = ductus ejaculatorius, ds = ductus seminis, erp = erection fluid pump, res = endophallic reservoir, sbc = support bridge complex, sbp = support bridge prolongation. Scales in mm.