Key to species of Propetes

(females of P. sakakibara sp. nov. unknown)

1 Female............................................................................................. 2

- Male............................................................................................... 3

2(1) Crown and pronotum with distinct yellow stripes (Takiya et al. 1999; fig. 7). Posterior margin of abdominal sternite VII with slightly rounded median lobe (Takiya et al. 1999; fig. 1). Body length from 13.2 to 14.0 mm............. Propetes schmidti

- Crown and pronotum without distinct yellow stripes (Fig. 7). Posterior margin of abdominal sternite VII with distinct subquadrate median lobe, slightly longer than lateral lobe (Fig. 19). Body length 15.0 to 18.0 mm.............. Propetes triquetra

3(1) Crown with distinct median longitudinal yellow stripe extending from apex to about midlength (Takiya et al. 1999; fig. 9). Aedeagus with shaft longer than atrial process; atrial process bifid (Young 1968; fig. 191f‒ 191g)........ Propetes schmidti

- Crown completely dark-brown or with anterior half yellow. Aedeagus with shaft shorter than atrial process; atrial process trifid (Figs 14‒15, 17‒18).................................................................................. 4

4(3) Connective anterior margin with distinct median rounded lobe (Fig. 16). Aedeagus atrial process, in lateral view, with ventral ramus short (approximately one-tenth of whole process length) and distance from apices of dorsal rami longer than length of one ramus (Fig. 18)...................................................................... Propetes triquetra

- Connective anterior margin straight, without median lobe (Fig. 11). Aedeagus atrial process, in lateral view, with ventral ramus long (approximately one-third of whole process length) and apices of dorsal rami distant from each other for at most the length of one ramus (Figs 12‒13)....................................................... Propetes sakakibara sp. nov.