FIGURES 130–133. Labiobaetis tenuicrinitus. 130, subimaginal gonostyli folded under larval cuticle (1, 2, 3, segments of gonostylus); 131, genitals of male imago (at right half, muscles shown by interrupted lines; places of attachment of median paraproctal muscles shown by dotted lines; 1, 2, 3, segments of gonostylus); 132, larval claw; 133, larval fore leg, dorsal view. Abbreviations: gv, gonovectis; pgs, protogonostylus (paired convexity on posterior margin of IX sternum of male larva); mIX- X, areas of anterior attachment of median paraproctal muscles (i.e., muscles going from sternum IX to common base of paraprocts); pb, median projection of penial bridge; usg, unistyliger.