Idaea subsericeata (Haworth, 1809)

Wanke, Dominic, Skou, Peder & Rajaei, Hossein, 2024, Two new records of the genus Idaea Treitschke, 1825 (Lepidoptera: Geometridae: Sterrhinae) for Iran, Zootaxa 5477 (1), pp. 93-97 : 96

Idaea subsericeata (Haworth, 1809)

Material examined. 1 ♀, W– Iran, Kordestan, Strasse Saghez–Baneh , 21 km NE Baneh, 30.–2.vii. 1975, 1950 m, leg. Ebert & Falkner, g. prep. 1110/2021 D. Wanke; in SMNK .

Diagnosis. Based on external characters this species can easily be confused with I. litigiosaria (Boisduval, 1840) , I. mutilata (Staudinger, 1879) , I. ossiculata (Lederer, 1870) and I. pallidata ([Denis & Schiffermüller], 1775) ( Hausmann 2004). Among these only I. ossiculata is present in Iran while I. pallidata is known from the Caucasus and Transcaucasus ( Hausmann 2004; Rajaei et al. 2023). A diagnosis is given here for I. subsericeata and compared against I. ossiculata and I. pallidata .

Ground color white, slightly glossy, discal spots and fringe dots tiny (white, less glossy, discal spots and fringe dots absent in I. pallidata ; sandy coloured, discal spots and fringe dots small I. ossiculata ) ( fig. 3 ; and Hausmann 2004: pages 70–71, 172–173, 175–176; plate 3, 10). In female genitalia ductus bursae slender, membranous appendix and corpus bursae completely densely spinulose (ductus bursae broad, without membranous appendix, corpus bursae completely densely spinulose in I. pallidata ; ductus bursae broad, without membranous appendix, corpus bursae not completely filled with spines in I. ossiculata ) ( fig. 3 ; and Hausmann 2004: pages 528, 535).

Figures

FIGURE 3. Wing pattern and genitalia structures of a female specimen of Idaea subsericeata (Haworth, 1809). (W–Iran, Kordestan g. prep. 1101/2021 D. Wanke; 2: Iran, Esfahan, g. prep. 1110/2021 D. Wanke). a=dorsal view; b=ventral view; c= female genitalia; Scale bar for wing pattern 1 cm; scale bar for genitalia structures 1 mm.