Sonan (1943: 473), without giving collection data for each specimen he examined, referred to Heichin, Heitou, Kobi (Gokenseki) and Takao as localities specimens from which he examined, and mentioned that this species was rare in northern part of Taiwan and common in Takao and Heitou. In TARI, we located 6 Ƥ and 1 3 with Sonan's identification label and collected before the year 1943: 1 Ƥ from Heichin, 3 Ƥ and 1 3 from Heito, and 2 Ƥ from Takao. These specimens belong to P. s ti g m a in the currently accepted sense. In addition to them, TARI houses a female P. s t i g m a collected in Gokenseki in 1909, which may have also examined by Sonan when he prepared his 1943 paper.