Key to Japanese species of Franklinothrips

1. Body bicoloured, abdominal segments I–II pale with transverse brown markings on anterior of tergites, strongly constricted and distinctly narrower than III (Fig. 13); fore wing with two dark cross bands (Fig. 24)...................... vespiformis

-. Body uniformly dark brown, abdominal segments I–II not constricted and II not narrower than III (Fig. 12); fore wing with one dark cross band and posterior half dark from clavus to apex (Fig. 23)................................. oblongus sp. n.