Jankowskia taiwanensis Sato, 1980

Jiang, Nan, Xue, Dayong & Han, Hongxiang, 2010, A review of Jankowskia Oberthür, 1884, with descriptions of four new species (Lepidoptera: Geometridae, Ennominae), Zootaxa 2559, pp. 1-16 : 4-5

Jankowskia taiwanensis Sato, 1980

Figs. 3–4 , 24 , 32

Jankowskia taiwanensis Sato, 1980 , Tyô to Ga 30 (3&4): 136, figs. 7, 8, 12, 17. Holotype 3, [ Taiwan]: Lushan, nantou. (NSMT)

Diagnosis. This species can be distinguished from J. athleta based on the following characters: larger than J. athleta (length of forewing: 25–27 mm in male); the forewing postmedial line is broader and is almost merging with the medial line near anal margin; the yellowish brown patch outside the postmedial line is indistinct; the hindwing medial line is distinct, very broad, more than thrice width of the postmedial line. In the male genitalia, the tegumen posterior processes are much shorter, less than half length of uncus; the gnathos median process is pointed apically, the length is about equal to the basal width; the juxta is asymmetrical, the left sclerotized process is digitiform, about one-fourth length of the juxta, the right side with a short sclerotized process. In the female genitalia ( Sato, 1980), the signum is oval, with 13–15 long and stout spines.

Distribution. China (Shaanxi, Zhejiang, Hubei, Fujian, Taiwan).

Figures

FIGURES 1 – 18. Adults of Jankowskia. 1 – 2. J. athleta. 1, male, upperside; 2, male, underside; 3 – 4. J. taiwanensis. 3, male, upperside; 4, male, underside; 5 – 8. J. fuscaria fuscaria. 5, male, upperside; 6, male, underside; 7, female, upperside; 8, female, underside; 9 – 10. J. curva sp. nov., holotype. 9, male, upperside; 10, male, underside; 11 – 12. J. acuta sp. nov., holotype. 11, male, upperside; 12, male, underside. 13 – 14. J. improjecta sp. nov., holotype. 13, male, upperside; 14, male, underside; 15 – 18. J. bituminaria raddensis. 15. male, upperside; 16, male, underside; 17, female, upperside; 18, female, underside. Scale bar = 1 cm.

FIGURES 23 – 30. Male genitalia of Jankowskia. 23, J. athleta; 24, J. taiwanensis; 25, J. fuscaria fuscaria; 26, J. curva sp. nov.; 27, J. acuta sp. nov.; 28, J. improjecta sp. nov.; 29, J. bituminaria raddensis; 30, J. obtusangula sp. nov. Scale bar = 1 mm.

FIGURES 31 – 38. Aedeagus of Jankowskia. 31, J. athleta; 32, J. taiwanensis; 33, J. fuscaria fuscaria; 34, J. curva sp. nov.; 35, J. acuta sp. nov.; 36, J. improjecta sp. nov.; 37, J. bituminaria raddensis; 38, J. obtusangula sp. nov. Scale bar = 1 mm.