Subleuconycta palshkovi (Filipjev, 1937)

(Figs 5, 6, 13–16, 22, 26)

Leuconycta palshkovi Filipjev, 1937, Lambillionea, 37: 64, figs 1, 2. Type locality: [Russia, Primorye terr., Partizansk] Sutshan (ZISP, Saint-Petersburg).

Subleuconycta palschkovi (sic!): Kozhantshikov 1950: 447, fig. 231.

Material examined. Lectotype. Male lectotype (designated herein, preserved in coll. ZISP) "Ussur. Krai. Sutshan"

4.vii.1932. Preparation No. 2680. Non-type material. RUSSIA: 3 males, Primorye terr, Kedrovaya Pad’ reserve,

22.vii.1974, 28.vi.-2.vii.1987, leg. V. Kononenko; 22.vii.1988, leg. S. Sinev, slide No.: Matov0411 (coll. ZISP); 1 male,

Primorye terr., Novoaleksandrovka, 28.vi.1972, leg. Elizarov, ex coll. A. Nekrasov (coll. ZISP). NORTH KOREA: 1

male, Prov. Kangwon, Mt. Kumgang-san, Hotel Kumgang-san, 24.vii.1982, leg. L. Forró & L. Ronkay, slide No.: 1331

(coll. HNHM); 1 male, Prov. North Pyongan, Mts. Myohyang-san, at Hotel Myohyang, 24.v.1991, leg. L. Ronkay & A.

Vojnits, slide No.: KA 1045m (coll. HNHM); SOUTH KOREA: 1 female, [Prov. Kangweon or Gyeonggi], slide No.: hhl-

784 (coll. KNA).

Diagnosis. Adult (Figs 5, 6). Wingspan 32–34 mm. Subleuconycta palshkovi can be distinguished from S. calonesiota (Figs 1–4) by the average smaller size; more greyish and lighter ground colour of fore- and hindwing; the presence of a brownish patch in the basal area; the smaller expanded dark line and brownish spot between the diffuse orbicular spot and reniform stigmata; the less angulate hindwing. It differs from S. sugii (Figs 7, 8) by its smaller size; the greyish ground colour of the forewing; the thicker dark line and brownish spot between the diffuse orbicular spot and reniform stigmata without black outline. Male genitalia (Figs 13–16). Subleuconycta palshkovi can be distinguished from S. calonesiota (Figs 9–12) by the slightly wider valvae at the basal second fourth; the somewhat narrowing proximal part of the valvae; the finely curved, apically pointed saccular processus; from S. sugii (Figs 17–20) by the basally narrower subdeltoidal shaped juxta; the slightly curved, medially broadening uncus; the somewhat straighter and narrower valvae; the basally wider valvae; the more terminal position of saccular processus. Subleuconycta palshkovi differs from S. calonesiota by its somewhat broader aedeagus; the somewhat broader and shorter coecum; the slightly larger basal and distal diverticulum of vesica; from S. sugii by the longer coecum; the smaller basal and well developed distal diverticulum of vesica. Male 8th abdominal segments (Fig. 22). See the details under S. calonesiota. Female genitalia (Fig. 26). Subleuconycta palshkovi differs from S. calonesiota (Figs 24, 25) by its more triangular corpus bursae and slightly elongated appendix bursae; from S. sugii (Figs 27, 28) by its triangular corpus bursae with the presence of signum and the long tube-like part of the corpus bursae.

Distribution. Russian Far East, Northeast China, Korean Peninsula and Japan.