EUXOA. By Dr. A. Corti. 
31 
absent, outer margin somewhat darker, grey. Similarly marked to decora Schijf. Hindwings impure white with 
dark outer margin, underside mostly quite unicoloured impure white. In isolated specimens there is a dark 
discal lunule and a dark transverse line beyond same on underside of forewings. N. Persia, Pontus, end of 
July. — signata Stgr. from Asia Minor, Zeitun is more heavily marked (al. ant. distinctius signatis) but this 
may be only an aberration. Early stages Unknown. 
L a decora Schijf. (= nebulosa Hbn. nee marcens Christ.) (Vol. 3, p. 29, pi. G d). Subject to great varia¬ 
tion and has therefore given rise to numerous denominations denoting aberrations. The most generally named 
— ab. livida Stgr. is mentioned by the author as a variety (multo obscurior, al. ant. obscure plumbeo-griseis, 
al. post, nigrescenti-griseis). This is said to be the form from the Swiss Alps and Caucasus, but livida occurs 
everywhere where decora occurs and is certainly only a colour variaton. On the other hand — splendida 
Trti. and Vrty. (= albidecora S.-R., calcaria Dhl. i. 1.) (4 b S) from Central Italy (Abruzzi etc.) is a good 
variety. It is the almost silvery white form of decora. Now and then same is adumbrated to a leaden grey, 
but never of the same colour as alpine forms. Also in the darker specimens, head and thorax retain their 
silvery white. The form also occurs in S. France (Digne, Larche). - decorata Neuburger is certainly only an 
aberration, unless perchance the decora from Vienna form an actual local race. The specimens generally have 
wider wings and are paler than alpine insects. — f. nivalis And. pale grey, somewhat yellowish, stigmata 
with distinct edges and — ab. flavorenalis Bub. with all wings glossy smooth leaden grey without greenish 
colouration, both pure colour aberrations, as also — ab. flavomaculata Schaw. specimens with distinct yellow 
stigmata. — simplex Trti. and Vrty. is a unicoloured pale pearly grey form without transverse lines and stig¬ 
mata from the italian Maritime Alps. To be added to the localities named in the main Volume we must in¬ 
clude the Pyrenees, Bosnia, Herzegowina, Caucasus, Urals, Spain (Sierra Nevada), Moravia and Lappland 
(Ribbe). Ova grey-brown or earthy grey without ridges. Larva typical subterraneous larva, yellowish grey 
with dark dorsal line, small dark warts and black stigmata. Pupa according to Wild red-brown with 2 cre¬ 
master spines in an earthen cocoon. 
E. deeorans Stgr. (Vol. 3, p. 40). (4 b S) (According to Warren = nyctymerina Stgr., subdecora Stgr. decorcms. 
Iris IX, p. 353.). Is a genuine Euxoa but somewhat doubtful species. Not identical with nyctymera (Vol. 3, 
p. 51 as simulatrix Hbn., pi. 12 e) which is not a Euxoa. Clearly related to decora Schijf. or even more so with 
birivia Schijf. However the pectinations of the antennae are somewhat shorter and the cilia more directly 
attached to the shaft. Colour as birivia, stigmata yellowish, tegulae yellowish. Uliassutai. 
E. parnassiphila Stgr. (Vol. 3, p. 29). 
E. birivia Schijf. (Vol. 3, p. 29, pi. G c) (= honoratina Donz. nec. dolis Grote). Besides the countries birivia. 
of origin mentioned in the main Volume it also occurs in the Crimea (Kozhantschikov), Armenia (Stau- 
dinger?), Illyria (Stauder), Bukowina, Galizia, Bavaria, Regensburg (Jungling). birivia occurs in the Alps 
and also in the plains. Flight July-August. Early stages unknown. — taurica Stgr. should be withdrawn accor¬ 
ding to the type of Staudinger, as this is a $ specimen belonging to sollers Chr. Under this designation 
specimens which were fairly unicoloured and which emanated from Asia (Issyk-kul, Naryn, Aksu etc.) were 
sirjnala. 
decora. 
livida. 
splendida. 
decorata. 
nivalis. 
flavo- 
renalis. 
flavo- 
maculata. 
simplex. 
offered by dealers and which should be classified to the form 
Stgr. i. 1. which is however flavi 
without yellow stigmata. Such specimens however often occur under flavisignata. There is no doubt that jlavi- 
signata is a genuine race, I am illustrating a striking S (ph 4 c). This form is subject to considerable variation 
in marking and colouration. —- plumbina Wgnr. (= Agrotis plumbina Wgnr.) (pi. 4 c cotype) from the plumbina. 
Ili territory, I do not hold to be a separate species, but at the best a race of birivia. Markings somewhat 
diffuse, hindwings in sex brownish. The almost pure white body hairs etc. of birivia are here a pronounced 
brownish, antennae somewhat more slender, less heavily pectinated. — sueticola Simla from the Sudetes with suclicola. 
“colouration of forewings inclining to yellowish” I deem to be a simple aberration in spite of its “isolated 
occurrence”. Such yellowish specimens also occur in the Valais etc. Early stages unknown. 
E. fraudulenta Corti (4 c $ type). Similar to birivia Schijf. but much larger. Wings wider and rounder, fraudu- 
Inner transverse line double, claviform stigma elongate, sulphur-yellow mixed with grey, similarly the orbi- lenia. 
cular and reniform stigmata. The latter large and diffuse. Outer transverse band double, heavily dentate, 
irregular. Dark crescents before the margin. Hindwings unicoloured grey-brown. Underside of wings glossy 
grey, hindwings with fairly heavy arched band and distinct discoidal spot. Tarsi with pale and dark ringlets. 
N. Thibet, Kuku-Noor. 
E. cuprina Stgr. ( = glabra Corti i. 1.) (Vol. 3, p. 42, pi. 12 c) (4 c <$)■ The illustration in the main Volume cuprina. 
is not good and I am illustrating the species afresh. It is a genuine Euxoa and should be classified close to 
birivia, markings are very similar, but it has coppery brown forewings. Korla, Central Asia; August. 
E. (?) sublata sp. n. (4 c type). Smaller than birivia, similar in form and marking. Forewings reddish sublata. 
brown and unicoloured except for the stigmata. Outer transverse and subterminal lines faintly indicated. 
Orbicular stigma small, round, of same colour as wings but with pale yellowish edge. Reniform stigma larger 
