FAM. GEOMETRIDZE 49 
Group III 
26. GENUS DYSPHANIA, HÜBNER 
Dysphania. Hübner, Verz. bek. Schmett. p. 175 (18267). 
Euschema. Hübner, ibidem, p. 175 (1826?). 
Hazis. Boisduval, Faune Ent. Pacif. Vol. r, p. 203 (1832). 
Heleona. 5wainson, Zool. Illustr. ser. 2, Vol. 3, t. 116 (1833). 
Polenivora. Gistl, Naturg. Thierr. p. 9 (1848). 
Pareuschema. Thierry-Mieg, Le Naturaliste, Vol. 27, p. 181 (1905). 
js 
Characters. — lace rounded-prominent, densely scaled. Palpus rather long. second joint 
moderately rough-scaled, third joint rather long, cylindrical, smooth-scaled. Tongue developed. Antenna 
in both sexes bipectinate to apex, with rather short branches. Thorax robust, densely hairy beneath. 
Cox:e densely hairy. Femora scarcely hairy, except hindfemur of cf. Foretibia rather short, tarsus 
rather long. Hindtibia in c (except in Section II) with deep groove containing dense tuft of hair, in both 
sexes with all spurs present. Tarsi spinulose. Abdomen not crested, in c woolly-haired beneath (except 
in Section II). Frenulum fully developed. Forewing in both sexes with a well-developed fovea. Wing- 
shape variable, fringes short. Forewing with costa nearly straight or slightly arched, termen smooth, 
litle rounded, always very oblique (in the cf of the type species and its nearest allies excessively 
oblique), longer (or much longer) than inner margin, cell nearly one-half, usually produced apically, 
DC deeply incurved, SC! from cell, free or anastomosing with C (variable even in a single species), 
SC? normal, R! longish-stalked with SC?», R? very characteristic, M! widely separate; hindwing with 
costa arched, apex not pronounced, termen strongly convex, usually more or less irregularly, the part 
from tornus to near R? straighter, a marked gibbosity about R?, especially in c. cell one-half, or slightly 
over, DC? incurved, C approximated to cell in basal third, rapidly diverging, SC? separate, R? from 
near R!, M! widely separate (Pl. 1, Fig. 12). &' genitalia (milifaris) with uncus massive, tapered, 
gnathos strong, harpe with broad, extended sacculus, vinculum with long extended lower arm, penis 
triangular as the base, broader above, with strong two-pronged projection at orifice of «doagus; large 
coremata. 
Lanva, — Cylindrical, smooth, segmentation well marked, head rather small, anal flap somewhat 
pointed ; rests stiffly outstretched, with head and anterior segments bent downward ; not fully described 
(see Janson, Cis£. Ent. Vol. 2, p. 540, t. 10, p. 2; Moore, Lep. Ceyl. Vol. 3, p. 422, 423; Semper, 
Reisen. PIulibp. (2), Vol. 6, p. 635, t. U, f. 14; Dewitz, Nova Acta Acad. Leop. d. Naturf. Halle, Vol. 44(2). 
p- 267, t. 9, f. 1o-rob). 
PurA. — Obtuse anteriorly, anal extremity furnished with numerous hooks; of the ordinary 
Geometrid form, brown in colour, spun between leaves ( Janson, Moore, Semper, Dewitz, in loc. cit.). 
An exceedingly natural genus, of somewhat uncertain affinities, though evidently correctly placed 
in the present subfamily. The possession of a fovea in both sexes is a very peculiar feature. Some of 
the other distinctions from Group II — the quite different wing-lorm, smoother scaling (usually with 
some hyaline or semi-hyaline areas), woolly clothing of abdomen beneath, long-stalking of. R! of the 
forewing, etc. — may be, as Turner is inclined to believe, of secondary importance, and it is not 
unlikely that he may be justified in his view that the relationship to the TerPma-group is really not 
remote. Some of the species are variable, and the prevalence of geographical variation will render it 
