38 
EUXOA. By Dr. A. Corti. 
bogdanovi. 
teacna. 
amoena. 
lapidosa. 
sibirica. 
iniracla. 
uniformis. 
japonica. 
basal line absent or only indicated by spots; inner transverse line somewhat oblique towards margin, indicated 
by dark arched line, outer transverse line usually dentate outwardly; orbicular and reniform stigmata faintly 
prominent, with blackish edges to the right and left. Claviform stigma is absent or only faintly indicated. 
Subterminal line faintly indicated by a shade with a pale edge outwardly. Sagittate marks are absent. Dark 
crescents before margin, fringes of the same colour as forewings. Hindwings grey-white to grey-brown. No 
discoidal spot. Underside almost unicoloured impure white, forewings slightly dusky brownish especially in 
centre. Crimea, Sarepta, Askhabad. 
E. bogdanovi Ersch. (Vol. 3, p. 28, pi. 6 a) (= Leucania bogdanovi Ersch. = Hiptelia grumi Alph.) (41). 
Forewings delicate yellowish, somewhat like L. vitellina Him., but still paler. It differs from same by the 
narrower and differently marked forewings. These have 2 narrow, indistinct stripes of rusty red colour, orbicular 
and reniform stigmata of the same colour, a rusty red central shade is present, hindwings yellowish white. W. 
Turkestan, Ferghana, Issyk-kul. August. Early stages unknown. 
E. leaena Pglr. (5 b). Sandy yellow inclined to reddish, transverse lines single, delicately marked and 
faintly dentate. The inner one somewhat oblique, the outer one incurved under the slightly more darkly 
discernible reniform stigma. It proceeds almost at a rightangle in an interrupted but straight line to inner 
margin. Hindwings dusted with grey, basal area, fringes and a very narrow stripe before margin being yellow. 
Underside monotonous yellow with fine arched line. Reminds one of similis Stgr. and heringi Chr. Ferghana. 
Section VIII: Antennae of <$ only ciliate. 
E. amoena Stgr. (Vol. 3, p. 34, pi. 7 e). The illustration in Vol. 3 is quite good, only in most specimens 
the inner transverse line is less distinct and the dark spot in the reniform stigma paler. This is also the case in 
the type. Hindwings impure whitish yellow, abdomen yellow to yellow-grey. Resembles constanti Mill., 
however in some specimens it is almost exactly like bogdanovi Ersch. It can however easily be differentiated by 
the entirely differently formed antennae. Armenia, Asia Minor, Turkestan. In autumn. Early stages unknown. 
E. lapidosa Graes. (Vol. 3, p. 52) (5 b £). A larger species, reminding one of conspicua Hbn. and simulans 
Hufn. Much darker than the latter, forewings very elongate. Ground colour dark grey-brown with 2 double 
transverse stripes. These are paler in centre and edged with blackish outwardly. Basal line present, but often 
scarcely discernible. Orbicular and reniform stigmata large, paler than ground colour, reniform stigma often 
with yellowish white centre in the edge towards the outer margin. Claviform stigma not always distinct, pale 
with blackish circumscription. Subterminal line is absent, there is often an undulate line before margin 
consisting of yellowish white spots. Hindwings and fringes of all wings dark smoky grey, the latter with very 
indistinct dark dividing line on forewings, on hindwings with whitish tips. Underside paler grey, arched line 
usually absent, sometimes however very distinct, both wings with blackish discoidal lunule. Head, thorax and 
upperside of abdomen dark brown-grey. Siberia, Pokrofka. Irkutsk, Vladivostock, Transbaikalia. July. 
Early stages unknown. 
E. (?) sibirica B. (Vol. 3, p. 49, pi. 12 h). The illustration there is unsatisfactory, I am therefore 
illustrating (5 b) Boisduval’s $ type, sibirica can scarcely be differentiated from certain forms of lapidosa 
Graes. and Filipjev considers them both synonymous. Graeser’s type of lapidosa is a small $, by which 
according to Filip jev, Graeser was misled into establishing his lapidosa. In my opinion it is quite possible they 
are the same, but as Boisduval’s type shows a completely smooth Irons (which however can of course happen 
in one and the same species of Euxoa), sibirica should be retained as a doubtful species. Siberia, Ussuri, Corea 
(according to Staudinger). 
E. intracta Wkr. (Vol. 3, p. 33, pi. 7 c). Similarly a large species, very like the previous one but much 
more red-brown. Compare the description in the main Volume. Described from North India, but occurring also 
in Thibet, China and Japan. Early stages unknown. Strand has described the following 2 aberrations: - 
ab. uniformis: forewings uniformly dark or reddish brown without darker sprinklings and ab. japonica: head, 
thorax and body uniformly black-brown not peppered with darker scales, the grey rings outlining the charact¬ 
eristic stigmata being sharply pronounced; hindwings whitish with brown veins and marginal area. In my 
opinion these are simple colour variations. 
The following species classified as Euxoa under Section V in the main Volume are no Euxoa at all and 
will be dealt with later: decussa Stgr., dijficilis Ersch., marcida Chr., eremicola Stdfs., clara Stgr., ignara Stgr., 
singular is Stgr. (the 4 last named belong in the Genus Dichagyris), peperida Hmps., opisoleuca Stgr., forficula 
Ev., forcipula Scliiff., exacta Stgr., glaucescens Chr., turbans Stgr., signifera F., celsicola Bell., improba Stgr. (the 
7 last named species should be in a Genus by themselves), haifae Stgr., spissilinea Stgr., multicuspis Stgr., 
aequicuspis Stgr. and pygmaea Hmps. 
Subgenus Mesoeuxoa subgen. nov. 
Already in 1925 at a meeting of the Swiss Natural History Society I reported that there were a number 
of socalled Euxoa having one prong of the $ clasper sometimes half the length and even shorter than the other. 
