Syzeuxis calamisteria Xue 1999
Creators: name: Li, Jing
name: Xue, Dayong
name: Han, Hongxiang
name: Galsworthy, Anthony C.
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Geometridae
Syzeuxis
Syzeuxis calamisteria

description: Syzeuxis calamisteria Xue, 1999
Figs 13, 25, 37, 42
Syzeuxis calamisteria Xue, 1999, in Xue & Zhu, Fauna Sinica: Insecta, 15: 192, figs 196,197, pl.4: 2. Holotype Ƥ, China: Tibet, Mêdog. (IZCAS)
Syzeuxis calamisteria Xue, 2000, Acta Zootaxonomica Sinica, 25 (1): 83, figs 3a, 3b, 5b.
Materials Examined. CHINA: 1Ƥ, Holotype, Tibet: Mêdog, 2750 m, 23 August 1982, coll. Han Yinheng (IZCAS); 1Ƥ, Paratype, same data as Holotype, slide no. L-0987 (IZCAS); 131Ƥ, paratypes, Tibet: Mêdog, Beibeng, 850 m, 21 May 1983, coll. Han Yinheng, male slide no. L-0986 (IZCAS).
Description. Antennae in male bipectinate and ciliate apically, ciliate in female. Labial palpus brown, extending about 1/3 beyond frons. Frons and vertex greenish yellow. Thorax and abdomen with dorsal sides greyish yellow to greyish yellow brown. Wing pattern. Forewing length: 3Ƥ 15 mm. Wings yellowish green. Outer margin of forewing slightly protruding at middle. Forewing with four dark patches along costa from base to near apex; another undulating dark band extending transversely from near base, not reaching outer margin, upper margin of band with four small teeth and lower margin extending to wing’s inner margin at base and medially, end of band with four small teeth. Hindwing yellowish brown, scattered with dense dark brown dots, denser near outer margin; postmedial line broad, grey, parallel to outer margin. Discal spot absent on both wings. Fringes of forewing dark and whitish on apex and partly whitish between M3 and CuA1; yellowish brown on hindwing. Hindwing in male with a small lobe at base. Underside: yellowish brown scattered with dark dots; black band on forewing and postmedial line on hindwing discernible on underside. Forewing with areole double. Hindwing with discocellulars biangulate. Hindwing in male without basal lobe. Male genitalia. Uncus large and broad, concave slightly apically. Gnathos with large median process very broad and only tapered distally. Valva quite small and short, tapered towards apex, but apex blunt; costa without process. Vinculum near valva base stongly expanded. Juxta developed, forming a large sclerotized plate, with posterior margin slightly depressed across its width. Aedeagus simple, broad, tube-like, with sparse spines posteriorly. Female genitalia. Apophyses posteriores very long, apophyses anteriores quite short. Ostium very broad, sterigma absent. Ductus bursae narrow and long except for very large, broad, sclerotized antrum, the latter about 1/3 length of ductus bursae, much broader than in S. tessellifimbria. Corpus bursae small and weak, membranous. Signum absent.
Diagnosis. S. calamisteria differs from all other congeneric species by the remarkable black markings on the forewing.
Distribution. China (Tibet).
description: Published as part of Li, Jing, Xue, Dayong, Han, Hongxiang & Galsworthy, Anthony C., 2012, Taxonomic review of Syzeuxis Hampson, 1895, with a discussion of biogeographical aspects (Lepidoptera, Geometridae, Larentiinae), pp. 1-24 in Zootaxa 3357 on pages 15-16, DOI: 10.5281/zenodo.281595