Labiobaetis, states of selected characters: a-f setae of the labrum dorsal, submarginal arc of setae a simple b feathered c dendritic d spatulate e lanceolate f lanceolate with apical pectination; g–k labial palp, distomedial protuberance of segment II and shape of segment III, g lobed and slightly pentagonal h compact, rounded and conical i hook-like and slightly pentagonal j thumb-like elongated and about semicircular k short thumb-like and oblong; l-m left mandible, l outermost denticle blade-like m denticles unmodified; n–p maxillary palp segment II, n with distolateral excavation o with slight distolateral excavation p without distolateral excavation; q–s paraproct, q distally expanded r distally slightly expanded s distally not expanded.