Timandra stueningi, Cui, Le, Xue, Dayong & Jiang, Nan, 2019

Cui, Le, Xue, Dayong & Jiang, Nan, 2019, A review of Timandra Duponchel, 1829 from China, with description of seven new species (Lepidoptera, Geometridae), ZooKeys 829, pp. 43-74 : 43

Timandra stueningi sp. n. Figs 19, 37, 60, 74

Description.

Head. Antennae bipectinate in male; dorsal surface of shaft pale yellowish-brown with brown scales, except in basal part; filiform in female. Frons reddish-brown, scaled with yellowish-white on ventral side, not protruding. Labial palpi yellowish-brown, slightly extending beyond frons. Vertex yellowish-white. Thorax. Patagia greyish-brown. Tegulae and thorax greyish-brown. Hind tibia with two pairs of spurs in male. Forewing length: male and female 17-19 mm. Forewing with acute apex, slightly protruded, outer margin straight; hindwing with rounded apex, outer margin protruding on vein M3. Wing colour yellowish-brown, densely covered with blackish or greyish-brown spots. Forewing with discal spot nearly invisible, greyish-brown; medial line arising from apex, narrow and black apically, then reddish-brown and straight, broad below vein R5; postmedial line composed of black spots on veins and connected with greyish-brown thin line; terminal line pale brown; fringes yellowish-brown. Hindwing with medial line similar to that of forewing; postmedial line arched, similar to that of forewing; terminal line and fringes similar to those of forewing. Underside densely covered with black speckles, stripes blackish-brown. Postmedial line of all wings and discal spot of forewing more distinct than those on upperside.

Male genitalia. Uncus narrow, dilated at terminal part, resembling fishtail. Socii absent. Tegumen with a pair of long and curved spine-like processes on inner side. Costa narrow; valvula rounded at apex, with two short processes centrally, basal one stout and rounded at tip, apical one narrow and acute terminally; sacculus approximately two times shorter than valvula, acute at tip. Juxta rounded at base, middle part slightly narrower than terminal part. Saccus small. Aedeagus slightly curved terminally; vesica with a weakly sclerotized and ribbed band.

Female genitalia. Seventh sternite membranous. Sterigma large, widely concave at middle of posterior margin. Colliculum short. Ductus bursae slender, approximately half as long as corpus bursae. Corpus bursae long and oval; signum with a longitudinal sclerite inside a slightly sclerotized plate, a pouch present on anterior part.

Diagnosis.

See T. extremaria .

Type material.

CHINA: Taiwan: Holotype (ZFMK), ♂, Chilan (Ilan Cy), 600 m, 16.VI.1993, coll. F. Aulombard and J. Plante. Paratypes: Taiwan: 1♂, Tibn hsiang, Hualien Co., 600 m, 19/21.VI.1993, coll. F. Aulombard and J. Plante (loaned from ZFMK); 1♀, Lishan, Taichung Co., 2020 m, 23/30.IX.1992, coll. F. Aulombard and J. Plante (loaned from ZFMK); 1♂, Hueisun Forest, Nantou Co., 570/800 m, 28/29.IX.1992, coll. F. Aulombard and J. Plante (ZFMK); 1♀, Tien-Hsiang (Hualien Co.), 600 m, 20.VI.1993, coll. F. Aulombard and J. Plante (ZFMK). Taiwan (TFRI): 1♀, Taipei Co., Xindian, Wulai, Fushan, 310 m, 9.VI.2013, leg. S. Wu; 2♂, Mioali Co., Nanchuang, Henawan, 850 m, 10.XI.2018, leg. S. Wu; 1♂, Taichung Co., Wuling, 1800 m, 12.IX.2012, leg. S. Wu; 1♂, ditto, 24.X.2014, leg. S. Wu; 1♂, Hualien, Ci’en, 1950 m, 10.XI.2012, leg. S. Wu; 1♀, Chiayi Co., Dabon, 1400 m, 16.VI.2013, leg. S. Wu and W. C. Chang; 1♀, Chiayi Co., Shanmei, 800 m, 9.III.2011, leg. S. Wu and W. C. Chang; 1♀, ditto, 6.X.2011, leg. S. Wu and W. C. Chang; 1♀, Kaohsiung Co., Shanping, 650 m, 3.V.2014, leg. W. C. Liao; 2♂1♀, Taitung Co., Taimali, 26.II.2014, leg. Y. C. Lin.

Distribution.

China (Taiwan).

Etymology.

The species is dedicated to Dr Dieter Stüning, Bonn, Germany, who has contributed greatly to the taxonomy of the Geometridae .