Marmasoma White, 1916

Marmasoma White, 1916: 183 –184, 188–190. Type species: Marmasoma sumptuosa White, 1916, designated by monotypy; Hardy, 1921: 43, 61, 63, 83; Bezzi, 1924: 7, 14; Tonnoir, 1927: 101 –102; Roberts, 1928: 94; Roberts, 1929: 559, 568–569, 579; Edwards, 1930: 168; Hall, 1969: 2 –3, 6; Colless & McAlpine, 1970: 698; Mühlenberg, 1971a: 31; Mühlenberg, 1971b: 93; Hull, 1973: 62, 232–233, 239; Hall, 1976: 87; Theodor, 1983: 85; Greathead, 1988: 14, 16–17, 19; Colless & McAlpine, 1991: 759; Yeates, 1994: 30, 55, 74, 79, 82, 92, 101, 116, 117, 125, 146, 148, 150, 163, 183, 190; Evenhuis & Greathead, 1999: xiv, 209; Trautwein et al., 2011: 6, 12–15; Evenhuis & Greathead, 2015: xv, 219.

Diagnosis. Scape with very long numerous yellowish white hairs, longer on ventral surface and laterally (Fig. 1); face flat, not projected in lateral view (Figs 3 A and C); anterior margin of compound eyes with short white hairs on median third (Figs 3 A and C); antepronotum with long and strong orange bristles laterally; scutum with two median longitudinal stripes of white scales, bordered externally and internally with fulvous scales that limit a velvety dark brown central area with sparse fulvous scales (Figs 3 B and D); anepisternum with short white and brown scales on posterior margin; laterotergite and mediotergite with long and strong bristles; coxae with long yellow bristles restricted to apex; abdomen decumbent with apex upraised in male (Fig. 3 A); tergites with fulvous and sparse white covering scales laterally and dark brown scales medially (Figs 3 B and D); epandrium with long and conspicuous proximal ventrolateral processes (Figs 4 A and B); aedeagus long, S-shaped, apically curved downswards as hook, with serrated projections on apical portion (Figs 4 E and 5).