Female, male, pupa and larva of S. pitasawatae sp. nov. A female B–F male G–J pupa K larva. A mandible (left side) B hind basitarsus and second tarsomere (left side; lateral view) C coxites, styles and ventral plate (ventral view) D style (right side; ventrolateral view) E ventral plate and median sclerite (lateral view) F ventral plate (caudal view) G, H gill filaments (left side; lateral view) I terminal hooks (caudal view) J cocoon (dorsal view) K head capsule (ventral view). Scale bars: 1.0 mm (J); 0.1 mm (B, G, H, K); 0.02 mm (C–F); 0.01 mm (A, I).