Australian Marsh Beetles (Coleoptera: Scirtidae). 7. Genus Nothocyphon, new genus Author Zwick, Peter text Zootaxa 2015 3981 3 301 359 journal article 10.11646/zootaxa.3981.3.1 13ca0acb-0db1-4ee9-bb85-a90cdc65dcf3 1175-5326 240978 34F39733-E55C-4695-8749-E6811F675740 Key to males of the lanceolatus -group (the fragmentarily known sp. A not in key) 1 Trigonium flat, only fine denticles along edges (e.g., Figs. 33 , 51 )............................................... 2 1' Trigonium with raised ridges bearing large spines (e.g., Figs. 44, 47 )............................................. 6 2 Caudal tips of the parameres of the two body sides separate from each other, not connected (e.g., Figs. 37 , 51 )............ 3 2' Caudal tips of left and right parameres connected by a transverse spine-bearing sclerite ( Fig. 56 )....... N. denticulatus n. sp. 3 Each paramere is a single continuous sclerite armed with teeth, each ends in a bare sclerotized knob or process (e.g., Figs. 32, 36 )................................................................................. N. lanceolatus n. sp. 3’ Each paramere subdivided into a large membranous lobe and a toothed ventral sclerite (e.g., Figs. 48, 51 )............... 4 4 Trigonium with long parallel apex, a large eversible band of spines on the membranous part of paramere ( Figs. 50, 51 ); elytra with dark curved band in anterior half ( Fig. 167 )............................................... N. taeniatus n. sp. 4' Apex of trigonium different, parameres without eversible spinule band, elytra brown................................ 5 5 Trigonium oval, regular serrations along outer edge of both parts of the parameres ( Fig. 48 )............ N. biserratus n. sp. 5' Trigonium tongue-shaped, the parameral sclerite with very irregularly shaped large teeth, near base and distally on otherwise membranous lobe sclerotized processes with numerous spines along edge or at apex ( Fig. 49 )........... N. nungatta n. sp. 6 Trigonium narrow, the paramedian dentiferous ridges start some distance from tip ( Figs. 43, 44 )....... N. serratipenis n. sp. 6' Trigonium wider, dentiferous edges beginning at tip, rising gradually, end declining abruptly ( Fig. 47 ). N. multidentatus n. sp.