Rhopalovalva triangulata Zhang & Li

Zhang, Aihuan & Li, Houhun, 2010, Two new species of Rhopalovalva Kuznetsov (Lepidoptera: Tortricidae) from China, Zootaxa 2718, pp. 64-68 : 67

Rhopalovalva triangulata Zhang & Li , sp. nov.

Figs. 2, 5

Diagnosis. This species can be separated easily from its congeners by the nearly Y-shaped uncus, which is club-shaped in other species. Rhopalovalva triangulata shares with R. rhombea the absence of a long ventral process or spine on the cucullus, but the two can be distinguished by the shape of the cucullus: triangular in R. triangulata and rhomboid in R. rhombea .

Description ( Fig. 2 ). Head: Vertex with grayish brown scales; frons grayish white. Antenna light brown. Labial palpus gray; third segment porrect, concealed in long scales of second segment. Thorax: Nota and tegula gray intermixed with brown. Legs gray, with brown scales on tibiae and tarsi of fore- and mid-legs, with brown scales on tarsus of hind-legs. Forewing length 6.0 mm; forewing ground color gray, sprinkled with dark gray dots; apex protruded, falcate; fasciae ill-defined; basal fascia and subbasal fascia forming indistinct basal patch, extending from costal 1/4 to 1/3 of dorsum, protruded in middle on outer side, occupying ca. 1/4 of forewing; tornus with an elliptic gray spot; costa with nine pairs of white strigulae from base of wing to apex; strigulae 1–4 between base and the point where Sc meets costa; strigulae 5 and 6 between Sc and R1 ponits, each containing only one stria; distal three pairs distributed between pairs of veins R1–R2, R2–R3, R3–R4 respectively, confluent with each other and extending to termen; fringe grayish white. Hindwing and fringe gray. Abdomen: Male genitalia ( Fig. 5 ) with uncus somewhat Y-shaped, ca. 1/3 length of socius. Socius hairy, broad, long, gradually narrowed apically. Valva narrow at base, neck slightly narrower; distal end of sacculus with a broad, short, hairy lobe directed dorsad; cucullus somewhat triangular, hairy. Aedeagus slender; cornuti numerous, spiculate. Female unknown.

Holotype. Male, CHINA: Shaanxi Province: Yangling (34.17˚N, 108.04˚E), 18.vi. 1985 (Houhun Li), genitalia slide no. ZAH04094.

Paratype. 1 male, CHINA: Shaanxi Province: Fengxian, 13.vii.1988 (Houhun Li).

Etymology. The specific name is derived from the Latin triangulatus = triangular, referring to the shape of cucullus.

Figures

FIGURES 1 – 5. Adults and genitalia of Rhopalovalva spp. 1, 3, 4. Rhopalovalva rhombea sp. nov. (slide no. YHL 03482, 3; ZAH 04317, Ƥ); 2, 5. Rhopalovalva triangulata sp. nov. (slide no. ZAH 04094, 3)