Rhopobota hamata, Zhang, Aihuan & Li, Houhun, 2012

Zhang, Aihuan & Li, Houhun, 2012, Descriptions of five new species of the genus Rhopobota Lederer (Lepidoptera, Tortricidae) in China, along with a checklist of all the described Chinese species, Zootaxa 3478, pp. 373-382 : 376-377

Rhopobota hamata sp. nov.

( Figs. 3 , 8 )

Diagnosis. This species is similar to R. okui Nasu, 2000 in the male genitalia, but it can be distinguished from the latter by the slender, hooked arms of uncus, the triangular lobe on the ventral edge of the basal opening of the sacculus, and the flattened spiniform setae near ventral angle of the cucullus. In R. okui the arms of the uncus are boot-shaped, the sacculus lacks the lobe on the ventral edge of the basal opening, and there are no flattened spiniform setae near the ventral angle of the cucullus.

Description. Adult ( Fig. 3 ). Head: Vertex gray mixed with brown scales; frons white. Antenna pale brown. Labial palpus brown, third segment and end of second segment white. Thorax: Dorsum and tegula brown mixed with gray. Forewing length 7.0 mm; upperside ground color silvery, light brown near costa; basal patch degenerative, only produced into a small triangular brown patch at dorsal 1/3; median fascia brown, extending from mid costal, narrowing before tornus; speculum nearly quadrate, gray; termen with a brown elongate triangular patch narrowing posteriorly; costa with nine pairs of white strigulae from base to apex; strigulae 1-4 faint, between base and the point where Sc meets costa; strigulae 5 and 6 between Sc and R1, composed of only one short stria; distal three pairs distinct, distributed between pairs of veins R1-R2, R2-R3, R3-R4, confluent below apex; cilia gray.

Hindwing and cilia gray. Legs gray, with brown scales on tibiae and tarsi. Abdomen: Male genitalia ( Fig. 8 ) with uncus bearing slender, hooked, bifid arms, slightly bending downwards, sickle-shaped; socius short digitate, slightly broadened, hairy. Valva elongate; neck indistinct; sacculus with a triangular lobe on ventral edge of basal opening, and a long sclerotized horn on posterior edge exceeding costa apically; cucullus hairy, slightly broader than base, apex straight, with seven thick flattened flagellate setae (some lost) situated near ventral angle. Phallus short, tubular, with numerous deciduous cornuti (lost). Female unknown.

Holotype. Male, CHINA: Guizhou Province: Mt. Fanjing (27.55˚N, 108.41˚E), 2100 m, 20.vii. 2001 (Houhun Li & Xinpu Wang), genitalia slide no. ZAH04273.

Etymology. The specific name is derived from the Latin hamatus, in reference to the hooked arms of the bifid uncus.

Figures

FIGURES 1 – 5. Adults of Rhopobota spp. 1. R. baoxingensis sp. nov.; 2. R. biloba sp. nov.; 3. R. hamata sp. nov.; 4. R. zhengi sp. nov.; 5. R. latispina sp. nov.

FIGURES 6 – 10. Male genitalia of Rhopobota spp. 6. R. baoxingensis sp. nov. holotype, slide no. ZAH 04295; 7. R. biloba sp. nov. holotype, slide no. ZAH 04221; 8. R. hamata sp. nov. holotype, slide no. ZAH 04273; 9. R. zhengi sp. nov. holotype, slide no. ZAH 04205; 10. R. latispina sp. nov. holotype, slide no. ZAH 04340.