Geometra neovalida, Han & Galsworthy & Xue, 2009

Han, H-X., Galsworthy, A. C. & Xue, D-Y., 2009, A survey of the genus Geometra Linnaeus (Lepidoptera, Geometridae, Geometrinae), Journal of Natural History 43 (13 - 14), pp. 885-922 : 907-908

Geometra neovalida sp. nov. ( Figure 1I )

Antennae in male bipectinate in basal two-thirds, the longest ramus about 1.5 times diameter of flagellum. Frons with upper half green, basal half white. Labial palpus brown. Vertex and dorsal side of thorax green; abdomen with dorsal side pale green. Hind tibia dilated, with hair-pencils and short terminal extensions.

Length of forewing: „ ♀ 23–26 mm. Wings light green, sometimes with a blue tinge. Both forewings and hindwings with outer margin dentate. The process on M 2 of hindwing quite small, leaving an almost complete concave curve between M 1 and M 3. Antemedial and postmedial lines slender and narrow, quite similar to those of G. ussuriensis , but forming small white patches on costa of forewing; postmedial line on hindwing slightly incurved near inner margin. Submarginal line indistinct, white, irregularly sinuate. Fringes white, brown on vein ends. Underside similar to upperside. Male genitalia ( Figures 2I , 3I ). Similar to G. valida . Gnathos with tip of median process strongly narrowed (as G. valida ). Valva broader than G. valida apically, and sacculus longer.

Segment 8 ( Figure 5I ) similar to G. valida , sternite virtually identical, but tergite much narrower than G. valida .

Female genitalia ( Figure 4I ). Similar to G. dieckmanni . Sclerotized and wrinkled area present around ostium area. Ductus bursae very short, sclerotized, with V-shaped antrum. Corpus bursae membranous, with posterior half narrow and wrinkled, anterior half rounded. Signum crescent-shaped, surrounded by an area of sclerotization.

Diagnosis

Geometra neovalida exhibits a number of rather confusing similarities to other members of the group: externally the transverse lines on the wings are quite similar to those of G. ussuriensis , but the crenellations of the outer margins of the wings are very much more marked in G. neovalida , with the result that the two species cannot easily be confused. Segment 8 and the male genitalia are very close to G. valida , as described above, but externally the two species are quite dissimilar, and cannot be confused. The female genitalia on the other hand are quite different from those of G. valida and G. ussuriensis but rather similar to those of G. dieckmanni as described above, which again is easily distinguished externally by the absence of crenellations on the wings.

Holotype: „, Donglingshan , Beijing, China, 1300 m, 23 June 2001, AC Galsworthy. ( IZCAS).

Paratypes: 1 „, Beijing: Mentougou Liyuanling , 22 June 2001, coll. Xue Dayong (abdomen broken) ; 1♀, Beijing: Mentougou Xiaolongmen , 23 June 2001, coll. Xue Dayong (abdomen broken) ; 1 „, Neimeng: Chifeng, 20 June 1989; 1 „, Neimeng: Chifeng Aqi , 14 July 1987, coll. Liu Chunxiang ; 1 „, Shaanxi: Huangbaiyuan , 17 August 1980, coll. Han Yinheng; 1 „ , Gansu: Tianshui Longlin , July 1992 ; 7 „ 1♀, Gansu: Diebu Anzigou , 2100 m, 5 June to 18 July 2000; 1 „ , Gansu: Diebu Lazikou , 2300 m, 8 July 2005 ( IZCAS) . 3 „, Donglingshan, Beijing, China, 1300 m, 23 June 2001 , AC Galsworthy ( AG Coll.) .

Etymology

The new species is named after the similar species G. valida .

Distribution

China (Inner Mongolia, Beijing, Shaanxi, Gansu) .

Figures

Figure 1. Adults of Geometra. (A) G. papilionaria, „; (B) G. symaria, „; (C) G. albovenaria, „; (D) G. valida, „; (E) G. euryagyia, „; (F) G. dieckmanni, „; (G) G. sponsaria, „; (H) G. ussuriensis, „; (I) G. neovalida sp. nov. „, holotype; (J) G. flavifrontaria, „; (K) G. purissima, „, holotype; (L) G. smaragdus, „; (M) G. fragilis, „, syntype; (N) G. sinoisaria, „, syntype; (O) G. burmensis sp. nov., „, holotype; (P) G. glaucaria, „; (Q) G. rana, „; (R) G. sigaria, „, syntype. Scale bar 10 mm.

Figure 2. Male genitalia of Geometra. (A) G. papilionaria; (B) G. symaria; (C) G. albovenaria; (D) G. valida; (E) G. euryagyia; (F) G. dieckmanni; (G) G. sponsaria; (H) G. ussuriensis; (I) G.

Figure 3. Aedeagus of Geometra. (A) G. papilionaria; (B) G. symaria; (C) G. albovenaria; (D) G. valida; (E) G. euryagyia; (F) G. dieckmanni; (G) G. sponsaria; (H) G. ussuriensis; (I) G. neovalida sp. nov.; (J) G. flavifrontaria; (K) G. purissima; (L) G. smaragdus; (M) G. fragilis; (N) G. sinoisaria; (O) G. burmensis sp. nov.; (P) G. glaucaria; (Q) G. rana; (R) G. sigaria. Scale bar 1 mm.

Figure 4. Female genitalia of Geometra. (A) G. papilionaria; (B) G. symaria; (C) G. albovenaria; (D) G. valida; (E) G. euryagyia; (F) G. dieckmanni; (G) G. sponsaria; (H) G. ussuriensis; (I) G. neovalida sp. nov.; (J) G. flavifrontaria; (K) G. purissima; (L) G. smaragdus; (M) G. fragilis; (N) G. sinoisaria; (O) G. glaucaria; (P) G. rana. Scale bar 1mm.

Figure 5. Segment 8 of Geometra. (A) G. papilionaria; (B) G. symaria; (C) G. albovenaria; (D) G. valida; (E) G. euryagyia; (F) G. dieckmanni; (G) G. sponsaria; (H) G. ussuriensis; (I) G. neovalida sp. nov.; (J) G. flavifrontaria; (K) G. purissima; (L) G. smaragdus; (M) G. fragilis; (N) G. sinoisaria; (O) G. burmensis sp. nov.; (P) G. glaucaria; (Q) G. rana; (R) G. sigaria.