Publ. 6. VI. 1932. 
DICENTRIA. By Dr. M. Drattdt. 
953 
a thick submarginal black line projects twice distally; two fine black transverse lines on the lighter margin and 
an interrupted lunular line before them. Hindwing whitish, smoky at the margin. The type was described from 
Central America. Farther to the south the species occurs in a much darker and more variegated form: meri- meridio- 
dionalis /. n. (148 h) with a distinctly carmine costal-marginal part dusted with violet, and a green inner- 
marginal area and distal margin. Thorax violettish-red, head and margins of tegulae green. Brazil. 
66. Genus: Dicentria Herr.-Schaff. 
This genus contains a great number of species of an uncommonly typical and uniform exterior with long 
and narrow forewings, a very oblique and somewhat dentate distal margin, the neuration exactly as in the 
preceding genus, with a more or less distinct dent of scales at the inner margin. The antenna is pectinated , 
only in the first half or two thirds, the $ antenna plain; palpus very short, hairy, with a tiny last joint, the 
head bears a slight tuft of hairs. The two sexes are very different. 
Type of genus: centralis Herr.-Schaff. 
D. centralis Herr.-Schaff. (148 i) has yellowish brownish-grey forewings, dusted with whitish-grey in centralis. 
the median area at the costal margin, with yellowish olive behind it in the cell, with fine indistinct transverse 
lines, the posterior one double, a slight brightening behind it in the subterminal area; the veins before the 
margin are fine black, dark streaks are between them towards the apex, that above the uppermost radial branch 
being the thickest, the apex above it whitish-grey, obliquely cut off inwards; a thick black oval spot at the cell- 
end. Hindwing whitish with a brownish inner margin, marginal line and veins. — f. sabella Drc. (148 i) is by sabella. 
far more common and without the black discal dot. The wide range extends from Mexico to Brazil. 
D. arpi sp. n. (148 i) may be another form belonging to sabella\ it is smaller, more slender and much arpi. 
lighter, with yellow and greenish scales in the whole costal-marginal area, darkened lilac brown at the inner 
margin, the whole median area light yellowish without markings, only an olive green subbasal line and an 
antemedian line being visible, the latter rectangular on the median vein; the discal streak is feeble, brownish, 
the postmedian vein-streaks parted by light are scarcely prominent, only the subapical black internerval streaks 
and the whitish-grey apical blotch are distinct. Hindwing somewhat darker than in sabella and broader 
brownish at the inner margin. Brazil (Joinville), received from Mr. Arp. Types in the Museum Senckenberg, 
Frankfort on the Main. 
D. quirosia Schs. is very near to centralis, smaller, lighter, of a somewhat more reddish tint, dusted with quirosia. 
brown only at the base of the costal margin, with a dark grey stripe in the base of the cell, the velvety black 
discal dot smaller, two dark brown internerval stripes behind it extend to the margin between the radial 
branches, the light oblique apical blotch is absent. Expanse of w r ings: 37 mm. Guatemala. — f. praealta Dogn. praealta. 
is a smaller southern race from the Amazons (Sao Paulo de 01iven§a), forewing of a light brown colour, yellowish 
at the costal margin, still lighter in the distal half; a brown internerval stripe between veins 4 and 5 does not 
extend to the margin. Expanse of wings: 30 mm. 
D. linita Schs. Forewing reddish-brown, dusted with lilac at the costal margin, broadly greenish- linita. 
yellow at the inner margin and grey at the distal margin, strewn with olive; markings as in the preceding 
species, but the olive transverse lines more distinctly double, with a'fine brown basal ray below the median 
vein at the base, and a brown inner-marginal spot below it; at the cell-end there is a velvety black crescentiform 
streak from the centre of which a fine black short streak extends distally, a brightening behind it as far as the 
postmedian line; dark internerval streaks at the apex and inner angle. Hindwing grey, yellowish towards the 
base and at the inner margin, w r ith a dark anal spot. The larger $ is greyer, veins strewn black and white, with 
much less distinct transverse markings. Expanse of wings: 37, $ 43 mm. Mexico (Jalapa). 
D. muelleri sp. n. (148 k) has ash-grey forewdngs with a slight lilac tint, a fine black basal ray as far as muelleri. 
the centre of the median vein, and a velvety black distinct fine crescentiform streak at the cell-end; the anterior 
transverse line is hardly traceable, the posterior one double, sharply dentate, its distal part behind the cell 
red-brown; the apical part of the wing from the postmedian line down to vein 3 is light yellowish-white, the 
subterminal portion behind the cell particularly light, a red-brown longitudinal stripe in it extends above and 
below the median radial branch to the margin; the 3 radial branches are distinct and fine black behind the 
discal crescent as far as the postmedian line, a white wedge between the median branches is before the margin, 
broadly entering into the fringe and bordered with black behind; the light fringe is speckled red-brown on the 
ends of the veins. In another d the light apical area of the type is entirely dusted with grey like the rest of 
the wing, and small dark subterminal internerval spots are noticeable here, whereby this specimen approaches 
the $ which looks like the $ of linita and is quite purple grey, with a red-brown tint towards the inner margin, 
the double postmedian line very feebly marked red-brown, dusted with whitish-grey at the apex and the distal 
ends of the subterminal streaks; fringe red-brown, the white subanal streak is absent. Hindwing white, with a 
slight yellowish tinge, a grey anal spot continued for a short distance as a marginal line, smoky in the $ at the 
VI 120 
