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): -1

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Parastenolechia longifolia Li

sp. nov.

Parastenolechia longifolia Li  , sp. nov.

( Figs. 15View FIGURES 12 – 15, 25View FIGURES 21 – 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. LLJ15093View MaterialsGoogleMaps  . Paratype: 1Ƌ, Sanmuping, Mt. Tianmu , 789 m, 16.vii.2015, leg. Aihui Yin, Kang Lou and Tao Wang  .

Adult ( Fig. 15View FIGURES 12 – 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. 25View FIGURES 21 – 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.