Head slightly narrower than pronotum, crown weakly produced with fore margin rounded. Head and thorax yellow; vertex usually with pair of dark subapical spots; pronotum usually with irregular brown symmetric markings; scutellum with brown basal triangles. Forewing either without marking, with oblique vittae or with dark spots. Ventral abdominal apodemes small and extended to or beyond posterior margin of 3^rd sternite. Male pygofer with widespread microtrichia and several small rigid setae on inner surface of hind margin; dorsal appendage present, free from pygofer side; ventral appendage absent; phragma lobe with spine-like setae present on each side of aedeagus, attached to dorsal apodeme of aedeagus by ligaments (Fig. 51). Subgenital plate upturned apically with lateral margin basally expanded triangular shaped with 2–4 lateral macrosetae in an oblique row slightly basad of midlength; lateral margin with short spine-like setae. Style apex usually with 3 points, sometimes 2^nd point absent. Aedeagus with shaft laterally compressed, usually with processes, gonopore apical on ventral surface; dorsal apodeme and preatrium present or absent. Connective U- or V- shaped with median anterior lobe absent.

Palaearctic and Oriental regions.

Dorsum yellowish brown; eyes grey with posterior margin beige; vertex with a pair of black spots subapically; coronal suture indistinct distally, pale brown basally (Figs 1–3). Face yellowish brown with median area of frontoclypeus and anteclypeus brighter towards apex; lorum and gena whitish (Fig. 4). Pronotum yellowish brown with brownish spots at anterior margin. Scutellum yellow with lateral triangles dark brown (Fig. 3). Forewing hyaline, veins brown. Abdominal tergites black; sternites milky white; subgenital plate dark apically (Figs 2, 14).

Figures 1–13. 

External morphology of Arboridia species 1–4 Arboridia furcata Han, sp. nov. 1 habitus, dorsal view 2 habitus, lateral view 3 head and thorax, dorsal view 4 face 5–9 Arboridia rubrovittata Han, sp. nov. 5 habitus, dorsal view 6 habitus, lateral view 7, 8 head and thorax, dorsal view 9 face 10–13 Arboridia robustipenis Han, sp. nov. 10 habitus, dorsal view 11 habitus, lateral view 12 head and thorax, dorsal view 13 face. Scale bars: 0.5 mm.

Figures 14–20. 

Arboridia (A.) furcata Han, sp. nov. 14 male genitalia, lateral view 15 subgenital plate, dorsal view 16 subgenital plate, ventral view 17 aedeagus, connective and style, lateral view 18 abdominal apodemes 19 aedeagus, connective and style, ventral view 20 style, lateral view. Scale bars: 0.1 mm.

Ventral abdominal apodemes small, extended to 4^th sternite (Figs 18, 27).

Male genitalia. Pygofer dorsal appendage simple, slender and wavy, with the apex obliquely truncate (Figs 14, 21). Subgenital plate with 3 lateral macrosetae in an oblique row slightly basad of midlength laterally (Figs 15, 16, 22, 23). Style long and slender, apex with 3 points; preapical lobe well developed; several small tubercles subapically and at midlength (Figs 20, 26). Aedeagal shaft long and stout, slightly laterally compressed, a pair of long slender basal processes on ventral surface of the shaft, parallel to the shaft in their basal half, then sharply turned in proximal direction in their distal half (Figs 17, 19, 24, 25); dorsal apodeme short and robust, expanded laterally at apex; preatrium short (Figs 17, 24). Connective U-shaped, with lateral arms long and stem broad (Figs 19, 28).

Figures 21–28. 

Arboridia (A.) furcata Han, sp. nov. 21 male pygofer, lateral view 22 subgenital plate, ventral view 23 subgenital plate, dorsal view 24 aedeagus, lateral view 25 aedeagus, ventral view 26 style, lateral view 27 abdominal apodemes 28 connective.

Body length males 3.0–3.2 mm, females 3.2–3.3 mm.

Holotype ♂: China, Guizhou Prov., Dejiang, 22.VII.2017, coll. Chang Han and Bin Yan, on grape (GUGC). Paratypes: 5♂♂, 5♀♀, same data as holotype.

The new species is named from the Latin word “furcatus”, referring to the forked aedeagal process.

The new species is similar to Arboridia (A.) anteoculara Song & Li, 2013, but differs in only having a pair of processes on the ventrobasal surface of aedeagal shaft (Figs 17, 24); the latter species having two pairs of processes and arising from both sides of the aedeagal shaft.

Vitis vinifera L. (grape).

Dorsum orange, yellow or beige. Eyes black, inner and posterior margins white (Figs 5, 6). Vertex without pair of dark spots, with a white patch each side of midline basally; coronal suture orange yellow (Figs 5, 7, 8). Face orange yellow. Pronotum with ivory or pale white streaks situated laterad of anterior margin. Scutellum pale or whitish yellow with lateral triangles dark to pale brown (Figs 5, 7, 8). Forewing with oblique pale reddish-orange vittae in clavus and adjacent area of wing. Abdominal segments milky yellow, tergites with segment margins brown. Subgenital plate with nearly 2/3 apically dark (Figs 5, 6).

Ventral abdominal apodemes small, extended to posterior margin of 3^rd sternite (Figs 32, 43).

Male genitalia. Pygofer dorsal appendage claw-like (Figs 29, 37). Subgenital plate with 3 lateral macrosetae in an oblique row slightly basad of midlength (Figs 31, 38). Style slender, with 2 points, heel point small; sword-like apically with transverse wrinkles in lateral view (Figs 30, 41), serrated in ventral view (Fig. 42). Aedeagus relatively small, shaft laterally compressed, digitate and slightly upturned in lateral view; subbasally with three processes, two basal processes and a single unpaired spike basad, the distal paired processes divergent with branches slender, the proximal process slightly shorter and more robust, finger-like in ventral view (Figs 34, 35, 39, 40); preatrium long. Connective V-shaped (Figs 36, 44).

Figures 29–36. 

Arboridia (Arboridia) rubrovittata Han, sp. nov. 29 male genitalia, lateral view 30 style, lateral view 31 subgenital plate 32 abdominal apodemes 33 aedeagus, connective and style, lateral view 34 aedeagus, lateral view 35 aedeagus, ventral view 36 aedeagus, connective and style, ventral view. Scale bars: 0.1 mm.

Figures 37–44. 

Arboridia (Arboridia) rubrovittata Han, sp. nov. 37 male pygofer, lateral view 38 subgenital plate 39 aedeagus, lateral view 40 aedeagus, ventral view 41 style, lateral view 42 style apex, ventral view 43 abdominal apodemes 44 connective.

Body length males 2.7–2.9 mm, females 2.9–3.0 mm.

Holotype ♂: China, Guizhou Prov., Jianhe, 26.V.2017, coll. Chang Han and Yaowen Zhang, on kiwi (GUGC). Paratypes: 23♂♂, 25♀♀, same data as holotype on kiwi; 3♂♂, 6♀♀, China, Guizhou Prov., Wujiang, 19.V.2017, coll. Chang Han and Bin Yan, on walnut (GUGC).

The new species name is derived from the Latin words “ruber” (red) and “vittatus” (banded), referring to the reddish-orange oblique stripes on the forewings.

The new species can be distinguished from most Arboridia species by its vertex and pronotum without dark spots (Figs 5, 7, 8) and reddish-orange stripes on the forewing. Its male genitalia is similar to A. (A.) lunula Song & Li, 2013, but can be distinguished by the sword-like apex of the style and aedeagus with three basal ventral processes, the upper paired processes slender (Figs 34, 39).

Actinidia chinensis Planch (kiwi fruit); Juglans regia L. (walnut).

Head with eyes black with posterior margin pearl white; crown yellow with a dark yellow spot at apex, an adjacent brown spot posteriorly on each side of midline and a brown patch at base of coronal suture (Figs 10–12). Face pale yellow, with anteclypeus brown apically; gena whitish yellow (Fig. 13). Pronotum semitransparent with brown markings (Fig. 12). Scutellum yellow with lateral triangles dark brown (Fig. 12). Forewing brownish hyaline with off-white patch in clavus and brochosome region. Abdominal segments dark brown, sternites with yellow hind margins of segments; subgenital plates black apically (Figs 10, 11).

Abdominal apodemes small, not exceeding posterior margin of 3^rd sternite (Figs 49, 58).

Male genitalia. Pygofer dorsal appendage tapering and curved ventrad (Figs 45, 53). Subgenital plate with 3 lateral macrosetae in an oblique row slightly basad of midlength (Figs 47, 54). Style apex with two triangular points; preapical lobe well developed (Figs 46, 57). Aedeagal shaft strongly laterally compressed and “C” shaped with apex upturned in lateral view, with two basal processes fused for 2/3 of their length at midlength of ventral margin; preatrium long, with a thorn-like basal projection (Figs 50–51, 55–56). Connective V-shaped with stem reduced (Figs 52, 59).

Figures 45–52. 

Arboridia (Arboridia) robustipenis Han, sp. nov. 45 male genitalia, lateral view 46 style, lateral view 47 subgenital plate 48 aedeagus, connective and style, lateral view 49 abdominal apodemes 50 aedeagus, lateral view 51 aedeagus & pygofer dorsal appendage, ventral view 52 aedeagus, connective and style, ventral view. Scale bars: 0.1 mm.

Body length males 2.9–3.2 mm, females 3.0–3.3 mm.

Holotype : ♂, China, Guizhou Prov., Wujiang, 19.V.2017, coll. Chang Han and Bin Yan, on walnut (GUGC). Paratypes: 5♂♂, 7♀♀, same data as holotype on walnut; 50♂♂61♀♀, China, Guizhou Prov., Xiuwen, 19.VII.2017, coll. Chang Han and Bin Yan, on kiwi (GUGC)

The new species name is derived from the Latin words “robustus” and “penis”, and refers to the robust aedeagal shaft in lateral view.

The new species can be distinguished from A. (A.) luojiashangensis Zhang & Song, 2022 by the aedeagus with strongly laterally compressed shaft “C” shaped; the paired basal processes fused for 2/3 of their length like a forked tongue (Figs 50–51, 55–56); and the preatrium with a thorn-like basal projection.

Figures 53–59. 

Arboridia (Arboridia) robustipenis Han, sp. nov. 53 male pygofer, lateral view 54 subgenital plate 55 aedeagus, lateral view 56 aedeagus, ventral view 57 style, lateral view 58 abdominal apodemes 59 connective.

Actinidia chinensis Planch (kiwi fruit); Juglans regia L. (walnut).