Geometra dieckmanni Graeser, 1889

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 : 903-904

Geometra dieckmanni Graeser, 1889 ( Figure 1F )

Geometra dieckmanni Graeser, 1889 , Berl ent Z 32:384. Syntypes, including at least 1 „, [ Russia]: Amurlandes , Chabarofka; Vladivostok.

Hipparchus dieckmanni: Prout, 1912 , in Wytsman, Genera Insectorum 129:72.

Description

Antennae in male bipectinate, the longest ramus about 1.5 times diameter of flagellum, almost simple filiform near end, simple filiform in female. Frons with base mainly white, upper part green. Labial palpus in male brown. Vertex yellow-white. Thorax and abdomen with dorsal side green. Hind tibia dilated and with hair-pencil, with short terminal extension.

Wing pattern. Length of forewing „ 15–21 mm; ♀ 24 mm. Wings green with blue tinge. Outer margin of both wings almost smooth, slightly scalloped on hindwing; incurved slightly in male and more dintinctly in female below apex; with a tiny tail process on M 3 of hindwing. Forewing with costa whitish blue-green. Antemedial line of forewing and postmedial line of both wings white, narrow and tenuous. Forewing with antemedial and postmedial line forming a white patch on costa; antemedial line generally straight; postmedial line strongly curved inwards near costa (from M 1 to costa), straight on hindwing. Submarginal line white, indistinct. Terminal line absent. Discal spot invisible. Fringes white. Underside similar to upperside, but much paler.

Male genitalia ( Figures 2F , 3F ). Similar to G. albovenaria , but gnathos with median process spinulose, valva rounder and blunter.

Segment 8 ( Figure 5F ) with sternite similar to G. albovenaria , but tergite narrower.

Female genitalia ( Figure 4F ). Sclerotized and wrinkled area present around ostium area. Ductus bursae very short, sclerotized, with V-shaped antrum. Corpus bursae membranous, with posterior half narrow, straight and wrinkled posteriorly, anterior half rounded; signum an almost rectangular sclerite, with two sharp teeth.

Biology

Larvae with pointed forked processes on A1–A5 and A8, hibernating in the young stage and mature in spring ( Sugi 1987).

Host. Fagaceae : Castanea crenata ; Quercus acutissima ; Quercus crispula ; Quercus mongolica ; Quercus serrata ; Quercus (from Scoble 1999).

Materials examined

IZCAS: 7 „, Inner Mongolia: Jiwen , 500 m, 4 July 1985, coll. Xue Dayong; 1 „ , Inner Mongolia: Jiwen , 26 June 1982 ; 1 „, ibidem, 3 July 1983.

BMNH: 1 „, Armur, Collectio H.J. Elwes, Rothschild Bequest B.M. 1939-1. 1 „ 1♀, Russ. Insein, S. Ussurigebiet, 23 August 1920, N. Kardakoff, Joicey Bequest, B.M.1-34-120; 1 „, Pompejefka , Little Chingan Mountains, May 1910. (W. Mau) , Rothschild Bequest B.M. 1939-1; 2 „, Japan, Vokohama , July 1939, coll. Hiroshi Inoue, L.B. Prout Coll. B.M.1939-643.

ZFMK: 1 „, Sutschanski, Rudnik, Ussuri July 396.

Distribution

China (Inner Mongolia), Japan, Korea, Russia (Amur area, Ussuri area).

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.