FIGURES 17–31. Diplectrona Westwood 1839 spp., diagnostic features. 17–21 in Australian Diplectroninae reviewed (Insecta: Trichoptera), with description of 21 new species, most referred to a new genus

FIGURES 17–31. Diplectrona Westwood 1839 spp., diagnostic features. 17–21, heads, dorsal: 17, D. felix McLachlan 1878 (France, Pyrenees), ♂; 18–19, D. tasmanica Jacquemart 1965 (Pine River, Cradle Mountain Road, Tas.): 18, ♂, and 19, ♀; 20, D. inermis (Banks 1939; NSW, Leura, 'Bridle Vale'), ♂; 21, D. spinata (Banks 1939; Qld, Springbrook), ♂. 22–24, ♂ right wings, dorsal: 22, D. castanea (Kimmins 1953; Tas., Nelson River at base of Nelson Falls [TRI-15004]), right fore- and hind wings, dorsal; 23, D. spinata (Qld, Branch Creek, Brisbane Riv. Catchment [TRI-30501]), right forewing, dorsal; 24, D. willandi sp. nov. (holotype), right fore- and hind wings, dorsal. 25–26, sections of ♂ antennae: 25, D. felix; 26, D. inermis. 27– 28, ♂ maxillary palps: 27, D. castanea; 28, D. spinata. 29, D. inermis, ♂ reticulate-walled internal sacs of abdominal segments VI and VII, ventral. 30, D. felix, ♂ right lateral filament on abdominal segment V, ventral. 31, D. inermis, ♂ left lateral filament on abdominal segment V, ventral. Scale bars = 2 mm. Abbreviations: ac = anal cell; alw = anterolateral wart; amw = anteromesal wart; A1+2+3 = fused anal veins A1, A2, A3; dc = discoidal cell; mc = median cell; pw = posterior wart.