Hemistola orbiculosa Inoue, 1978

Chang, Wei-Chun & Wu, Shipher, 2013, Review of the genus Hemistola Warren, 1893 in Taiwan with notes on an unusual conifer-feeding larva and descriptions of three new species (Lepidoptera, Geometridae, Geometrinae), Zootaxa 3741 (4), pp. 538-550 : 546-548

Hemistola orbiculosa Inoue, 1978

(Figs 11,12,31,32, 40, 48, 56)

Hemistola orbiculosa Inoue, 1978 , Bull. Fac. Domest. Sci., Otsuma Woman’s Univ., 14: 213, figs 21,22,23. (Type locality: Taiwan, Nantou. Holotype male, in BMNH); Chang, 1990, Illustration of moths in Taiwan (3): 107; Han & Xue, 2009, Entomol. Sci., 12(4), 403, fig. 24,54,82; Han & Xue, 2011, Fauna Sinica, Insect Vol. 54: 411, figs 283,603, pl. XVI: 33; Yazaki & Wang, 2011, Moths of Guandong Nanling National Nature Reserve, 82, pl. 13: 20.

Material Examined. TAIWAN. 1 male, Kaohsiung County, Tengchih, 1400 m, 18–IV–2004, leg. S. M. Kung, slide ESRI5829; 1 male, same collecting locality, 21–IV–2004, leg. M. C. Lin, slide ESRI3626 (coll. ESRI); 1 male, Taoyuan County, Guanyindong, 550 m, 10–V–2013, leg. C. G. Lai; 1 male, same collecting locality, 12–V– 2013, leg. C. G. Lai; 2 males, same collecting locality, 19–V–2013, leg. C. G. Lai; 2 males, Pintung County, Hengchun, 23–V–2012, leg. Y. C. Lin; 2 males, Hualien County, Ci'en, 1950 m, 7–IX–2013, leg. S. Wu & W. C. Chang; 1 male, Pingtung County, Hengchun, 22–VI–2009, leg. Y. W. Zhong; 1 male, same collecting locality, 7– XII–2010, leg. Y. W. Zhong; 1 male, same collecting locality, 31–I–2012, leg. L. M. Juang; 2 males, Pingtung County, Kenting, 29–Ix–1999, leg. L. M. Juang; 2 females, Taitung County, Luanshan, 400 m, 28–XII–2011, leg. S. F. Huang & L. C. Hsieh; 1 male, same collecting locality, 23–III–2011, leg. S. F. Huang & L. C. Hsieh; 2 males, same collecting locality, 8–V–2011, leg. S. F. Huang & L. C. Hsieh; 1 male, same collecting locality, 29–IX–2011, leg. S. F. Huang & L. C. Hsieh (coll. TFRI)

Diagnosis. This species is externally similar to H. kezukai and H. simplex . Their comparison is given under the diagnosis of H. kezukai .

Distribution and bionomics. This species was originally described from Taiwan by Inoue (1978) and subsequently recorded, with genitalia confirmed (Yazaki 2013, pers. comm.), in Nanling, Southern China (Yazaki and Wang 2011). The moth can be occasionally found in primary broad-leaved forests in low to mid elevations (200–1950 m.). The adults occur from June to September, possibly bivoltine.