Timandra robusta, 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 robusta sp. n. Figs 18, 36, 59

Description.

Head. Antennae bipectinate in basal four-fifths in male; dorsal surface of shaft pale yellowish-brown with brown scales to tip gradually. Frons deep yellowish-brown and slightly protruding. Labial palpi yellowish-brown, not extending beyond frons. Vertex yellowish-white, sometimes mixed with brown centrally. Thorax. Patagia brown. Tegulae and thorax greyish-brown. Hind tibia with two pairs of spurs in male. Forewing length: male 18-19 mm. Forewing with pointed apex; outer margin almost straight; hindwing with rounded apex; outer margin protruding on vein M3. Wing colour yellowish-brown. Forewing with discal spot black and weak; medial line brown, straight, arising from apex and extending to middle part of terminal margin; postmedial line grey, straight, narrow and weak, forming a row of small black spots on veins, separating from medial line before vein M1; terminal line brown; fringes yellowish-brown. Hindwing with medial line brown, straight; postmedial line arched, similar to that of forewing; terminal line and fringes similar to those of forewing. Underside with terminal line of forewing, postmedial line of hindwing and discal spot of forewing more distinct than those on upperside.

Male genitalia. Uncus short and stout, slightly concave at tip. Socii absent. A pair of short spurs present on inner side of tegumen. Base of ventral margin of valvula with two short processes, basal one stouter than subapical one. Sacculus short with acute apex. Juxta broad on basal and terminal part, narrow centrally. Saccus short and broad, terminally flattened. Aedeagus short and narrow; vesica membranous, but partly weakly sclerotized, with two small sclerotized protrusions, covered with spurs on surface.

Female genitalia. Unknown.

Diagnosis.

See the diagnosis of T. extremaria .

Type material.

Holotype, ♂, CHINA: Yunnan (IZCAS): Baoshan, Baihualing, 1520 m, 11-13.VIII.2007, coll. Wu Chunguang. Paratype: Yunnan (IZCAS): 1♂, Jingdong, 1170 m, 1.VI.1956, coll. A.K. Zaguljaev.

Distribution.

China (Yunnan).

Etymology.

The species is named based on the Latin robustus, which refers to the short and stout uncus in the male genitalia.