Parastenolechia longifolia Li

Liu, Linjie & Li, Houhun, 2016, Taxonomic review of the genus Parastenolechia Kanazawa (Lepidoptera, Gelechiidae, Litini) from Mainland China, with descriptions of six new species, Zootaxa 4178 (1) : -

Parastenolechia longifolia Li , sp. nov.

( Figs. 15 , 25 )

Type material. CHINA: Zhejiang Province: Holotype Ƌ, Xianrending (30.20°N, 119.50°E), Mt. Tianmu , 1500 m, 25.vii.2011, leg. Linlin Yang and Na Chen, genitalia slide No. LLJ15093 . Paratype: 1Ƌ, Sanmuping, Mt. Tianmu , 789 m, 16.vii.2015, leg. Aihui Yin, Kang Lou and Tao Wang .

Adult ( Fig. 15 ). Wingspan 10.5 mm. Head white. Labial palpus white; second segment with basal half blackish brown on outer surface, mixed with brown scales near apex laterally, longer than third; third segment black at basal 1/3 and near apex. Antenna with scape white, mixed with brown scales; flagellum alternately yellowish white and brown. Thorax and tegula white, tegula pale yellow at base. Forewing with basal 1/4 white, black between basal 1/4 and 3/4, distal 1/4 white suffused with brown and yellowish brown scales, black anteriorly along costa; costa with a small black spot near base, surrounded by yellow; tornal spot rounded, black; cilia grayish white to grayish brown, mixed with blackish brown scales. Hindwing and cilia grayish brown. Legs yellowish white with black spots, tarsi black except white at apex of each tarsomere.

Male genitalia ( Fig. 25 ). Eighth sternum subtrapeziform, posterior margin straight, anterior margin slightly concave. Uncus narrowed basally, semicircular distally, setose posteriorly. Gnathos rectangular, length about five times width; anteromedian process conical, roundly protruded anterolaterally. Tegumen triangularly projected posteriorly, furcate from anterior 1/3. Glandiductor symmetrical, about same length as tegumen, strongly curved, dilated triangularly at base. Valva narrow, subrectangular; outer lobe slender, clubbed, exceeding end of juxta, longer than 1/2 length of tegumen, distally dilated elliptically, setose; inner lobe thicker, obtuse apically, about 1/4 length of outer lobe. Juxta shorter than outer lobe of valva, tapered to acute apex. Vinculum inverted subtriangular; saccus narrow, longer than vinculum. Aedeagus about 2/3 length of tegumen-uncus complex, slender, slightly dilated basally, almost curved circularly, distal 1/5 truncate.

Female unknown.

Diagnosis. Parastenolechia longifolia sp. nov. can be easily distinguished by the forewing black between basal 1/4 and 3/4. It is similar to P. collucata in the male genitalia, differing in the tegumen without membranous process ventrally, and the juxta slightly shorter than the outer lobe of the valva. In P. c ol l u c at a, the tegumen has a membranous process ventrally, and the juxta is about 1/2 the length of the outer lobe of the valva in the male genitalia.

Distribution. China (Zhejiang).

Etymology. The specific epithet is derived from the Latin longifolius (long lobe), referring to the long outer lobe of the valva in the male genitalia.

Figures

FIGURES 12 – 15. Adults of Parastenolechia spp. 12, P. t r ap e z ia sp. nov., holotype, male; 13, P. semielliptica sp. nov., holotype, male; 14, P. medispina sp. nov., holotype, male; 15, P. longifolia sp. nov., holotype, male (Scale bars = 2.0 mm).

FIGURES 21 – 25. Male genitalia of Parastenolechia spp. 21, P. papillaris sp. nov., paratype, slide No. LLJ 15091; 22, P. claustrifera Meyrick, slide No. LLJ 15036; 23, P. trapezia sp. nov., paratype, slide No. LLJ 15009; 24, P. semielliptica sp. nov., holotype, slide No. LLJ 15054; 25, P. longifolia sp. nov., holotype, slide No. LLJ 15043 (Scale bars = 0.3 mm).