Parastasia oberthueri ishigakiana Nomura, 1964
(Figs. 30–32, 36–37)
Parastasia oberthueri ishigakiana Nomura, 1964: 55 [description, figured]; Nomura & Kobayashi 1974: 6 [description of the male, parameres figured]; Kobayashi 1983: 15 [redescription, erroneously under sakishimana, figured]; Kuijten 1992: 128 [redescription]; Yu et al. 1998: 110 [redescription, figured, subspecific unassigned]; Fujioka 2001: 94 [catalogued]; Zorn 2006: 277 [catalogued]; Sakai & Fujioka 2007: 24 [redescription, figured]; Zorn & Bezděk 2016: 357 [catalogued].
Material examined (1♂, 1♀). 1♂, 1♀ (CCCC), CHINA: Taiwan, Pingtung, Shih-tzu, Li-lung-shan, 550m, larvae collected by Yi-Ting Chung on 2017. II.02, emerged on 2017. V.20.
Remarks. P. oberthueri ishigakiana can be distinguished from nominotypical subspecies by the pronotum color of female and aedeagal characters of male (Nomura & Kobayashi 1974). Kobayashi (1983) firstly recorded a male specimen from Taiwan, which was subsequently accepted by Fujioka (2001). However, the specimens of both sexes reported from Taiwan by Yu et al. (1998) were not assigned to a subspecies. As they stated, females from Taiwan possess a black pronotum, normally with four orange spots. Two orange apical spots present on pronotum of the examined female (Fig. 32). The aedeagus (Figs. 36, 37) of the examined male (Figs. 30, 31) is identical to the figures showed by Nomura & Kobayashi (1974). I agree to consider the population from Taiwan as belonging to the subspecies ishigakiana since both sexes had their characters fit descriptions and illustrations of Japanese specimens (Nomura 1964; Nomura & Kobayashi 1974; Sakai & Fujioka 2007).
Distribution. China: Taiwan; Japan.