FIGURES 17–20 in Four new species of the genus Brithura Edwards from China, with an updated key to world species (Diptera, Tipulidae)

FIGURES 17–20. Brithura stigmosa sp. nov. Male. 17. Hypopygium, lateral view; 18. ninth tergite, dorsal view; 19. inner gonostylus, lateral view; 20. outer gonostylus, lateral view. Scale bar of 17,18 = 0.5 mm, 19,20 = 0.25 mm.