Matsumuraeses medogensis Lv & Li

Lv, Jinmei & Li, Houhun, 2007, A systematic study of the genus Matsumuraeses Issiki from China (Lepidoptera: Tortricidae: Olethreutinae), Zootaxa 1606, pp. 59-68 : 66-67

Matsumuraeses medogensis Lv & Li , sp. nov.

( Figs. 9, 10 , 15 , 20 )

Type material. Holotype: ɗ, CHINA: Mêdog County, Xizang (Tibet) Autonomous Region, 3300 m, 8.viii.2003, X. Wang and H. Xue, genitalia slide no. LJM04358. Paratypes: 32 ɗɗ, 18 ΨΨ, same data as holotype.

Diagnosis. The new species resembles M. ochreocervina , but it can be distinguished from the latter by the costa distinctly concave from the neck to the distal end, the sacculus prominently obtuse-angled ventrally; and the cucullus equilaterally triangular, with hairs extending over ventral 1/2 distally, its outer margin slightly concave at middle. In M. ochreocervina , the costa is straight, slightly concave at middle, the sacculus without distinct angle ventrally, and the cucullus is subtriangular convex in the proximal part ventrally, with hairs extending over ventral 1/3 distally. This new species is also similar to M. tetramorpha , but differs in having the cucullus concave at the middle on outer margin; the cornuti absent; the lamella postvaginalis with posterior 2/3 approximately parallel-sided; and sternite VII of the female with the posterior 2/3 trapezoidal and the anterior 1/3 U-shaped.

Description. Male ( Fig. 9 ). Forewing length 7.5–9.0 mm. Head and frons yellowish-fuscous, with rough scales. Antenna yellowish-fuscous, about one-half length of forewing. Labial palpus pale yellowish-fuscous; second segment expanded, triangular; terminal segment pale fuscous, short, exposed. Thorax darkish fuscous dorsally, pale yellow ventrally. Forewing moderately dilated; costa gently arched; apex obtusely pointed, scarcely prominent; termen sinuate above, rounded beneath, moderately oblique; ground color pale yellowishfuscous; costa with nine pairs of pale-whitish strigulae from base to R4, each pair with a gray stria extending obliquely; four pairs distributed between base of wing and point where Sc meets costa, first and second pairs situated before 1/4 forewing length, with striae extending backward to costa, reaching third pair of strigulae, third pair marking distal margin of subbasal fascia, fourth pair marking proximal margin of media fascia; striae discontinuous, extending to distal margin of discal cell, fifth and sixth pairs between Sc and R1 points, appearing as a single paired strigulae, striae from them confluent and extending backward to costa, across postmedian fascia, reaching the seventh pair, distal three pairs distributed between pairs of veins R1–R2, R2– R3, and R3–R4, each appearing as a single paired strigulae, with striae from them extending to termen between R5 and M1; basal fascia absent, and other five potential fasciae indistinct, with a blackish spot on outer margin of discal cell and a dark suffusion at base; ocelloid patch distinct, with three short black lines between M3– CuA1, CuA1–CuA2, and CuA2–CuP; cilia yellowish-brown. Hindwing yellowish-fuscous except costal margin grayish-white basally; cilia grayish-white. Genitalia ( Fig. 15 ): Tegumen long, narrow. Socii developed, with long hairs. Tuba analis membranous, moderately broad, spinulate distally. Valva long; basal cavity rather short, about 1/2 length of sacculus, with setae above; basal process developed; costa strongly bent at neck, then distinctly concave to distal end; sacculus obtusely angled ventrally; neck distinct; cucullus more or less equilaterally triangular, inner surface with strong bristles distally, extending in distal over 1/2 of ventral edge, its outer margin bluntly rounded, slightly concave at middle. Aedeagus broad at base, gradually narrowed to about middle, same width in distal half; cornuti absent; caulis long, well developed.

Female ( Fig. 10 ). Forewing length 7.0–9.0 mm. Wing ground color pale fuscous, deeper than in male, markings indistinct. Genitalia ( Fig. 20 ): Papilla analis narrow, long, with hairs. Anterior and posterior apophyses thin, equal in length. Ostium bursae relatively narrow. Lamella postvaginalis with posterior 2/3 approximately parallel-sided, slightly concave in middle, concave slightly on posterior margin; anterior 1/3 gradually narrowed, with two small sclerotized processes anteriorly. Ductus bursae slender, sclerotized medially; ductus seminalis arising from posterior end of corpus bursae. Corpus bursae rounded, densely granulate; two signa, one large, curved, blade-shaped, and the other much smaller. Sternite VII weakly sclerotized, deeply concave; posterior 2/3 trapezoidal, anterior 1/3 U-shaped.

Distribution. China: Xizang (Tibet) Autonomous Region.

Etymology. The specific name is derived from the type locality of Mêdog, in the Xizang (Tibet) Autonomous Region.

Figures

FIGURES 7 – 10. Adults of Matsumuraeses. 7. M. capax Razowski & Yasuda (♂); 8. M. capax Razowski & Yasuda (Ψ); 9. M. medogensis Lv & Li, sp. nov. (♂); 10. M. medogensis Lv & Li, sp. nov. (Ψ).

FIGURES 11 – 15. Male genitalia of Matsumuraeses. 11. M. falcana (Walsingham); 12. M. phaseoli (Matsumura); 13. M. vicina Kuznetzov; 14. M. capax Razowski & Yasuda; 15. M. medogensis Lv & Li, sp. nov.

FIGURES 16 – 20. Female genitalia of Matsumuraeses. 16. M. ussuriensis (Caradja); 17. M. falcana (Walsingham); 18. M. phaseoli (Matsumura); 19. M. capax Razowski & Yasuda; 20. M. medogensis Lv & Li, sp. nov.