Calamotropha duovirgata Kim & Li, 2023

Kim, Yongnam, Qi, Mujie, Wang, Shuxia & Li, Houhun, 2023, Taxonomy of the genus Calamotropha Zeller (Lepidoptera: Crambidae: Crambinae) from China, Zootaxa 5297 (4), pp. 451-482 : 460-461

Calamotropha duovirgata Kim & Li , sp. nov.

( Figs 11 , 36 , 57 )

Type material. Tibet: Holotype ♁, Beibeng Township (29.25°N, 95.18°E), Mêdog County, 810 m, 15.VIII.2017, leg. MJ Qi et al., slide No. KYN21337 . Paratypes: 1♀, same collection location as holotype, 26.Ⅴ–4.VI.2021, leg. HL Han, slide No. KYN21227; 1♁, Checkpoint (29.33°N, 95.34°E), Yadong village, Mêdog county , 833 m, 2.VIII.2018, leg. MJ Qi, slide No. KYN21336 .

Diagnosis. The new species can be distinguished by the forewing with longitudinal pale brown line along M 1 vein and CuA 2 vein, respectively. It is similar to C. franki ( Caradja, 1931) superficially, and can be distinguished by the forewing without medial dot and the terminal margin with six evenly distributed black spots; in the male genitalia by the uncus longer than the gnathos and the valva with a strong spiniform dorsoapical process. In C. franki , the forewing has a black medial dot, and the terminal margin has eight evenly distributed black dots ( Fig. 13 ); the uncus is shorter than the gnathos, and the valva lacks a dorsoapical process ( Fig. 37 ).

Description. Adult ( Fig. 11 ). Wingspan 25.0–26.0 mm. Frons and vertex white. Maxillary palpus brownish orange basally, white distally. Labial palpus brownish white on inner and dorsal surface, except third segment yellowish brown distally; yellowish brown on outer and ventral surface. Antenna white dorsally, brownish orange ventrally. Patagium, tegula and thorax white. Forewing white, costal margin yellowish brown; longitudinal pale brown line from base to terminal margin along M 1 vein and Cu 2 vein, respectively; medial fascia pale orange, excurved at about anterior 1/6, at middle and at posterior 1/4, incurvated at intersection of medial fascia and longitudinal lines as well as at posterior 1/5; subterminal fascia pale orange, arched outward and parallel to terminal margin medially; pale orange streak beyond subterminal fascia from costal margin oblique outward to vein R 5; terminal margin pale orange, with six evenly distributed triangular black spots; fringe pale greyish brown basally, pale grey distally. Hindwing white; terminal margin brown; fringe white. Fore- and midlegs brownish orange, tarsus of midleg brownish orange and white; hindleg pale yellowish white, tarsus pale reddish brown and white. Abdomen white to yellowish white.

Male genitalia ( Fig. 36 ). Uncus wide at base, narrowed up to basal 4/5, distal 1/5 inflated in spatulate shape. Gnathos slender, about 4/5 length of uncus, wide at base, uniformly slender from near base to before rounded apex. Valva short and wide, maximum width equal to length of gnathos, distal 1/3 produced to large process with a strong spine-like dorsoapical process; costa convex to a right angle at basal 1/3, concave beyond basal 1/3 to subapex, serrate along distal 2/3; ventral margin obliquely obtuse. Pseudosaccus short and small, sub-semicircular. Saccus broad basally, narrowed distally, length subequal to basal width of valva. Juxta broad, V-shaped. Phallus uniformly slender, about two X as long as valva; vesica with two spine-like cornuti, located before apex of phallus, one long, the other short, distal part with many verrucous protuberance; ductus ejaculatorius arising from base.

Female genitalia ( Fig. 57 ). Papillae anales ovate. Apophyses posteriores slender, inflated at basal 1/3, about half length of eight tergum. Apophyses anteriores short, wide at base, narrowed distally. Lamella antevaginalis subtrapezoidal, widened anteriorly, triangularly concave anteromedially, with dense microtrichia on inner wall. Antrum inflated medially, narrowed anteriorly, with dense fine folds. Ductus bursae slightly widened to corpus bursae; ductus seminalis arising from ductus bursae posteriorly. Corpus bursae ovate; signum absent.

Distribution. China (Tibet).

Etymology. This specific epithet is derived from the Latin duo and virgatus, referring to the two longitudinal pale brown lines on the forewing.

Figures

FIGURES 9–16. Adults of Calamotropha spp. 9. C. doii, ♀; 10. C. duofurcata, ♁; 11. C. duovirgata sp. nov., holotype, ♁; 12. C. formosella, ♁; 13. C. franki, ♀; 14. C. josettae, ♁; 15. C. latella, ♁; 16. C. melanosticta, ♀. Scale bars = 5.0 mm.

FIGURES 34–39. Male genitalia of Calamotropha spp. 34. C. dentatella, slide No. KYN21484; 35. C. doii, slide No. KYN21197; 36. C. duovirgata sp. nov., holotype, slide No. KYN21337; 37. C. franki, slide No. KYN21330; 38. C. latella, slide No. KYN21271; 39. C. melanosticta, slide No. KYN21268. Scale bars = 0.5 mm.

FIGURES 56–60. Female genitalia of Calamotropha spp. 56. C. doii, slide No. KYN20882; 57. C. duovirgata sp. nov., paratype, slide No. KYN21227; 58. C. franki, slide No. KYN21331; 59. C. latella, slide No. KYN21270; 60. C. melanosticta, slide No. KYN21273. Scale bars = 0.5 mm.