114 KOCTUIDJE. 



1284. Polia nebulosa. 



Isoctua nchulosa, ITufn. Bcrl. Mag. iii. p. 418(1707); Frr. Beitr. pi. 52; 



Stand. Cat. Lep. pal. p. 156. 

 Kocfiia l>imac>ifosa,Esp.Schmelt.iy.:pl. 132. ff. 1,2 (1788); Steph. 111. 



Brit. Eiit., Haiist. iii. p. 28. 

 Noctua thapsi, Brahin, Ins. ii. p. 135 (1791). 

 Noctua grcnuUs, Donov. Brit. Ins. x. pi. 34. f. 1 (1801). 

 Noctua pleheia, Hiibn. Samml. Eur. Schniett., Noct. f. 78 (1827). 

 Aplccta afJcolda, Obertli. fit. Ent. v. p. 79 (1890). 

 Aplccta robsoni, Collins, Eut. Rec. ii. p. 264 (1891). 

 Mamcstra lama. Stand. Iris, ix. p. 254 (1896'). 

 Mamestra asiatica, Stand. Iris, x. p. 334 (1897). 



Head and thorax white mixed with brown ; palpi with blackish 

 patch at sides ; tcgulce with black medial line.; patagia edged with 

 blackish ; tarsi banded with black ; abdomen grey-brown, the 

 dorsal crests blackish. Fore wing whitish, irrorated and more or 

 less tinged with brown ; subbasal line double, waved, strongly 

 angled inwards in cell, from costa to vein 1, above which there is a 

 slight blaok streak before it ; antemedial line double, irregularly 

 waved, oblique ; claviform large, defined by black ; orbicular and 

 reniform very large, defined by black, the former rather quadrate, 

 the latter with its inner side rather irregular and its centre 

 defined by brown ; traces of a waved medial line ; postmedial line 

 double, dentate, and produced to dark points on the veins, bent out- 

 wards below costa and incurved below vein 4, some white points 

 beyond it on costa : subterminal line whitish, defined on inner side 

 by a series of dentate dark marks, the one in submedian fold 

 prominent, angled outwards at vein 7 and dentate at veins 4, 3 ; a 

 terminal series of black lunules. Hind wing whitish suffused with 

 brown, especially on terminal area, usually leaving some whitish on 

 termen between veins 6 and 1 ; a dark terminal line ; cilia white; 

 the underside whitish, the costal and terminal areas irrorated with 

 brown, a small discoidal spot, sinuous postmedial line, and diffused 

 subterminal band. 



Ab. 1. folsoin. Fore wing uniform glossy black. 



Ab. 2. asiatica. Fore wing dull grey, size somewhat smaller. — 

 C. Asia. 



Ab. 3. ascolda. llather browner, a large form. — E. Siberia, 

 Japan. 



Hab. Britain, Leech Coll. ; France, Sand Coll. ; GEEUANr, 

 Zcller and Frey Colls. ; N. Italy ; Turkey ; Eussia, Livonia, Zeller 

 Coll. ; Armenia ; W. Turkestan, Tarbagatai Mts., Issyk-kul, Ala 

 Tau ; W. Siberia, Altai ; E. Turkestan, Hi ; Mongolia, Uliassutai 

 Mts. ; Tibet, Amdo ; E. Siberia, Kentei, Ussuri ; Japan, Tokohama 

 (Manley), 2 (S , I $ , Oiwake {Pryer), 3 J , 1 § ; Corea, Kornitoff 

 {Fletcher), 1 § . Exp. 54-60 millim. 



Larva. Meyr. Brit. Lep. p. 86; Barrett, Lep. Brit. iv. p. 165, pi. 155. f. 1. 



lisht brown, darker at sides ; dorsal line pale, traversing a series 

 of dark diamond-shaj)ed marks ; supraspiracular line indistinct, 

 darK.. Food-plants : Birch, willow, elm, etc. 9-5. 



