Journal 
The genus ArboridiaZachvatkin, 1946 belongs to the tribe Erythroneurini of subfamily Typhlocybinae (Hemiptera: Auchenorrhyncha: Cicadellidae). Some members of the genus Arboridia are known as grape pests in the world as well as in Korea, and most of them have been also known as pests on cherry, hawthorn, pear, peach, apple, mulberry, maple, woodbine, dogwood, and several other plants (Song & Li, 2013). A total of 69 valid species have been described in the Palaearctic and Oriental regions (Song & Li, 2013). So far, eight species of this genus have been recorded in the Korean Peninsula (Kwon & Huh 2001).
In this study, two new records of the genus from the Korean Peninsula are reported, and descriptions, genital illustrations and dorsal habitus of the species with a key to the Korean Arboridia species are presented. The specimens used for this study are stored at Laboratory of Systematic Entomology, Chungnam National University, Daejeon, Korea. The genital segments were detached from abdomen and macerated 10% KOH for about 60 min for dissection to examine male genitalia.
Taxonomic accounts
ArboridiaZachvatkin, 1946ArboridiaZachvatkin, 1946: 153 (Type species: Typhlocyba parvulaBoheman, 1845) KhodumaDworakowska, 1972: 403 (Type species: Khoduma jacobiiDworakowska, 1972)
Diagnoses
The genus Arboridia can be identified by vertex with one or two pair of dark spots, and style apex with 3 points. Pronotum without conspicuous pits. Abdominal apodemes small and pygofer lobes without thick bristles. Subgenital plates have one group bristles at the middles of outer margin.
Key to the Arboridia species in the Korean Peninsula.
-
Vertex with 4 black spots ···································· A. lunula Vertex without 4 black spots, with 2 black spots ················· 2
-
Forewings with white round patterns. Pronotum anterior margin with one black spot ············································· 3 Forewings without white round patterns. Pronotum anterior margin without one black spot ············································· 6
-
Face with one black spot above each antennal pit ·············· ······································································· A. nigrigena Face without black spot above antennal pit ·························· 4
-
Process of pygofer with two points ·································· 5 Process of pygofer with one point ······················ A. koreacola
-
Vertex of face with black spot ···················· A. maculifrons Vertex of face without black spot ···················· A. okamotonis
-
Aedeagus with teeth at apex ············································ 7 Aedeagus without teeth at apex ··········································· 8
-
Aedeagus with process arising from base ··········· A. suzukii Aedeagus without process arising from base ······· A. silvarum
-
Process of pygofer lobes long and reaching lower margin of pygofer lobes ···················································· A. apicalis Process of pygofer lobes short and not reaching lower margin of pygofer lobes ·································································· 9
-
Aedeagus apex V - shape ··························· A. kakogawana Aedeagus apex crater - shape ···························· A. agrillacea
Arboridia (Arboridia) lunulaSong & Li, 2013 네눈박이애매 미충 (신칭) (Figs. 1-7)
Arboridia lunula Song & Li, 2013: 234 Description. Vertex yellow, with 2 pair black spot. One pair small and near anterior margin, another pair large and near posterior margin. Eye grayish black. Pronotum with 4-6 light spots and rest color almost dark brown. Face yellow, with antennal pits and frontoclypeal suture dark brown. Scutellum brown with 2 black triangles. Forewing with several light brown and brown stripes (Figs. 1, 7). Legs yellow without patterns. Abdomen generally dark brown or yellow with dark brown margin. Male abdominal apodemes narrow, extended to half of sternite ⅳ(Fig. 5). Male genitalia: Pygofer lobe widely rounded anterior margin and posterior margin flat without macrosetae. Subgenital plate smooth curve from apex to starting point, with 3 macrosetae at the middle of outer margin and row of microsetae from subbase to apex (Fig. 6). Style apex with 3 points (Fig. 2), subequal in size. Aedeagus with pair of long process (Fig. 3). Aedaegus curved dorsally in lateral view (Fig. 4).
Measurements. Body length including forewings male 2.7~2.9 mm, female 2.8 mm.
Specimens examined. [CNU] 1♂, Korea, Osan, Mulhaynggi Arboretum, 01.ⅸ.2009; [CNU] 1♂1♀, Korea, Pocheon, KNA, 06.ⅴ.2011.
Host plants. Unknown.
Distributions. China (Guizhou); Korea (Pochen, Osan).
Arboridia agrillacea (Anufriev, 1969) 광릉애매미충 (신칭) (Figs. 8-14)
Erythroneura agrillaceaAnufriev, 1969: 182 Arboridia agrillaceaAnufriev, 1978: 87
Description. Vertex light yellow with pair of dark spots medially. Eye bright black. Pronotum aterior margin light brown-yellow, with two small brown spots and scattered small brown spots. Face yellow and postclypeus dark brown, anteclypeus brown-yellow. Vertex of face with pair of light spots. Scutellum yellow with black triangles. Forewing almost brownyellow with brown stripes (Figs. 8, 14). Leg light yellow without pattern. Abdomen brown with yellow strips. Male abdominal apodemes short and wide. Slightly extended to sternite iv (Fig. 12). Male genitalia: Pygofer lobe wide parallel anterior margin and posterior margin without macrosetae. Subgenital plate starting point protruded, with 3 macrosetae at the middle of outer margin and row of microsetae from sub-base to apex. Basal end wide, narrow gradually apex (Fig. 13). Style apex with 3 points (Fig. 9), first and second point large. Aedeagus with head and apex grooved (Fig. 10). Aeadaegus curved askew in lateral view (Fig. 11).
Measurement. Body length including forewings male 2.7 mm, female 2.8 mm.
Specimens examined. [CNU] 1♂ 1♀, Korea, Pocheon, KNA, 05.ⅸ.2011.
Host plants. Unknown.
Distributions. Russia (Maritime Territory); China (Sichusa, Henan, Guizhou, Shaanxi); Korea (Pocheon).
KSAE
