Protosticta satoi Asahina, 1997

Phan, Quoc Toan & Kompier, Tom, 2016, A study of the genus Protosticta Selys, 1855, with descriptions of four new species from Vietnam (Odonata: Platystictidae), Zootaxa 4098 (3), pp. 529-544 : 536-537

Protosticta satoi Asahina, 1997 —light form

( Figure 6 A–E)

Specimens examined. 3 males, Nam Bung, Van Chan district, Yen Bai Province, 14.V.2015 and 1 male, same location, 26.IV.2015; 1 male, Xuan Son National Park, Phu Tho Province, 18.IV.2015; 1 male, Ba Be National Park, Bac Kan Province, 26.VII.2013, Tom Kompier leg.; 4 males, 2 females, Xuan Son National Park, Phu Tho Province, 18.IX.2015, Quoc Toan Phan leg.

Notes. The female specimens match the original description well (Asahina 1997) by their thoracic pattern and the presence of a large pale yellowish spot on the dorsum of S9 ( Figs. 6 C–E). Unlike the dark form, the males and females of light form P. satoi appear to be even less consistent in prothoracic markings. While some males have all lobes of the pronotum darkened ( Fig. 6 B), in others the pattern is more like the female illustrated here, in which only the anterior and posterior lobes are black, but the remainder is uniform pale yellow ( Fig. 6 D).

Measurements. Male. Hindwing 20–24; abdomen including appendages 39–45. Female. Hindwing 17–18, abdomen including appendages 28–29.

Distribution. Vietnam (Ba Be National Park, Bac Kan Province; Tam Dao National Park, Vinh Phuc Province; Xuan Son National Park, Phu Tho Province; Ba Vi National Park, Ha Noi; Cuc Phuong National Park, Ninh Binh Province; Pia Oac Nature Reserve, Cao Bang Province).

Figures

FIGURE 6. Protosticta satoi (light form), Xuan Son. [A – B] male— (A) head & thorax in lateral view; (B) prothorax in dorsal view; [C – E] female— (C) head & thorax in lateral view; (D) prothorax in dorsal view; (E) abdomen tip in lateral view.