Geometra sigaria ( Oberthür, 1916 )

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 : 919-920

Geometra sigaria ( Oberthür, 1916) ( Figure 1R )

Nemoria sigaria Oberthür, 1916 , Études Lépid comp 12:77, pl. 383, fig. 3212. Syntypes including „, [ China] Tsekou .

Hipparchus sigaria: Prout, 1932 , in Seitz, Macrolepid World 12:75. Geometra sigaria: ICZN, 1957 , Opin Decl ICZN 15(Opinion 450):254.

Description

Antennae in male very shortly bipectinate, filiform at end, the longest ramus almost equal to diameter of flagellum. Frons green. Labial palpus short, not extending beyond frons. Vertex white. Dorsal side of thorax green. Hind tibia dilated, with hair-pencil and short terminal extension.

Wing pattern. Length of forewing „ 20 mm, female unknown. Very similar externally to G. flavifrontaria . Wings dark green. Apex of forewing blunt and rounded, not as falcate as in G. flavifrontaria . Outer margin of both wings smooth, no tail process on hindwing. Transverse lines similar to G. flavifrontaria , the only substantial difference being the fringes, which are brown basally and white terminally in G. sigaria , but totally white in G. flavifrontaria . Underside whitish green, similar to upperside.

Male genitalia ( Figures 2R , 3R ). Unlike those of any other species currently included within Geometra . Uncus developed, sclerotized, rod-like. Socii sclerotized, tapered and sinuate. Gnathos with median process sharp, with several spines. Valva well sclerotized; costa with a large, blunt process near base, which is thickly dotted with scale-like sclerotized processes; costa with a projecting spatulate terminal process, irregularly dentate at lower margin; extending from this process to base of valva is a long sclerotized ridge; valva with terminal margin irregularly serrate. Sacculus undeveloped. Saccus not protruding. Transtilla undeveloped. Juxta a rounded sclerite. Aedeagus with middle part expanded, posterior half sclerotized, wrinkled, and tapered, with a small blunt process at middle.

Segment 8 ( Figure 5R ) with tergite wide, partly sclerotized, with two narrow longitudinal membranous bands, the area between the bands forming an elongate sclerotized area; on either side of outer apex a slender incurving sclerotized process, spinulose at tip; sternite very narrow, with sclerotized, nearly U-shaped depression at middle.

Female genitalia. Unknown.

Materials examined

BMNH: 2 „, syntypes, Tsekou, 1895, R.P. Dubernard, Ex Oberthür Coll. B.M. 1927- 3 (one is labelled: Geometridae genitalia slide No. 21882) .

ZFMK: 1 „, syntype, Tsekou, 1895, R.P. Dubernard ( Nemoria sigaria Obthr. type „); 1 „, syntype?, Tsekou, 1895, R.P. Dubernard ( Nemoria sigaria Obthr. „; sigaria Obthr. Type, abgebildet Seitz IV. Suppl. fig.); 1 „, syntype?, Tsekou, R.P. Dubernard, 1895.

Distribution

China (Yunnan).

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 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.