Bactrothrips pictipes Haga & Okajima

(Figs 2 & 8)

Bactrothrips pictipes Haga & Okajima, 1989: 15–18.

This species was described from the warm temperate zone of Japan and subtropical Ryukyu Islands based on a good number of females and males collected from dead leafy branches of Quercus and Castanopsis trees. Subsequently, it had been recorded from Taiwan (Okajima 2006) and China (Dang & Qiao 2012), and is newly recorded here from Vietnam. Although the specimens from Japan and Taiwan, including type-series, have the femora largely dark brown with apices yellowish, the specimens from Vietnam have the femora entirely dark brown. However, most of other structures are indistinguishable. This species has a pair of lateral red spots on each abdominal segment (Fig. 2).

Although B. brevitubus zhamanus was treated as a synonym of B. pictipes by Dang and Qiao (2012) without sufficient scientific evidence or explanation, it is newly synonymized here with B. luteus. This is discussed above under luteus.

Specimens examined. Japan, numerous females and males including type series from Honshu, Kyushu and the Ryukyu Islands (detailed data are omitted, see Haga & Okajima 1989). Taiwan, 2 males, Nantou, Nanshanchi, on dead leaves, 24.iii.1984, SO; 1 female, Nantou Hsien, Meifeng, alt. about 2000m, on dead branches, 28.iii.1984, SO. Vietnam, 1 male, Ninh Thuan Prov., Lam Son District, Root 27 (Pass 1), ca 900m alt., 23.viii.2007, SO.