956 
DICENTRIA. By Dr. M. Dratjdt. 
rnoribunda. 
phth Irncna. 
trifasciata. 
unifasciata. 
clarita. 
drucei. 
minotelis. 
fumata. 
posterior one followed by double rows of dots on the veins. Hindwing white, the veins finely brownish towards 
the margin, the inner angular spot indistinct or absent. The $ forewing is quite dark red-brown, without any 
longitudinal stripes, only the subapical black wedge is very distinct, the transverse lines more or less broken 
up into rows of dots; $ hindwing blackish-grey. Mexico. 
D. rnoribunda Dyar (149 b) is extremely similar to disparilis, but larger and with broader wings, the 
black cell-end dot is entirely enclosed in the light cellular stripe, whilst in dis'parilis it coincides distally with 
the dark radial ray, the transverse lines are much less distinct, only the lower part of the distal one is more 
distinct. The ana-l-angular spot of the hindwing is larger and grey. Mexico (Zacualpan), taken in July. 
D. phlhimena Dyar is very similar to rnoribunda and is from the same habitat, but the forewings seem 
to be a little narrower, the space between the basal ray and the median vein is not dark, the white subanal 
spot is linear and more oblique; at once discernible by its brownish-grey hindwings which are only whitish in 
the disc. Expanse of wings: 38 mm. 
D. trifasciata Dogn. has light reddish yellowish-brown forewings with a slight pink tinge, dusted with 
moss-green at the costal margin, brown at the base, with 3 straight blackish-brown longitudinal stripes, a 
subcostal one, a median one as in disparilis, and a third below the median one which extends then indistinctly 
between the veins 2 and 4 into the margin; the lower half of the cell is strewn with white, the cross-vein moss- 
green and white. Hindwing purely white, feebly brownish at the anal angle. Expanse of wings: 36 mm. 
Argentina. 
D. unifasciata Dogn. (149 b) is coloured like trifasciata, but it has only the median longitudinal stripe 
through the cell and terminating obliquely between the veins 5 and 6 at the margin, blackish scaling below 
it at the margin between the lower median and radial branches; 3 fine dark antemedian transverse lines are 
indicated. The brown anal spot on the purely white hindwing is longer and extends at the inner margin upwards. 
Expanse of wings: 36 mm. Colombia (Muzo). 
D. clarita Schs. (149 b) forms the transition to the next group of better known species which are also 
represented in North America. The shape of the wings is somewhat more elongate, narrower; the ground-colour 
is the same as in the preceding species, the cell remains light, the cliscal longitudinal blotch begins only at the 
cross-vein, it is indistinct and narrows down towards the margin where it is bordered by fine dark brown veins 
on both sides; a black fine basal ray is present as well as a narrow oblique blackish diffuse spot above the anal 
angle and two fine grey longitudinal stripes above vein 6 as far as the margin; the costal margin is traversed 
by very oblique beginnings of dark transverse lines. Hindwing yellowish-white, spotted brown at the anal angle. 
Expanse of wings: 47 mm. Brazil. 
D. drucei Schs. (— laciniosa Drc. nec Ediv.) (149 b) is a common and widely distributed species, with 
light reddish yellowish-brown forewings, mostly more intensely strewn with purple brown at the inner margin; 
the cell remains light, a fine olive brown basal ray is below it, a black cross-vein, streak in the darker olive 
brown cell-end, before this streak fragments of a double black and brown median line; instead of the longi¬ 
tudinal stripe between the veins 4 and 5 there are only 2 fine feeble olive grey longitudinal shadows which are 
very inconspicuous, a white wedge-shaped spot is behind the black anal oblique spot. Hindwing diaphanous 
yellowish-white, brownish at the costal and inner margins, with a brown anal-angular spot. The very dissimilar 
$ shows a yellowish-brown ground-colour dusted with dark purple brown in the basal half except the inner 
margin and in the marginal quarter, as well as sub terminally between the veins with 2 longitudinal streaks each. 
Hindwing light greyish-brown with light fringe. Mexico. — The larva was found by my father in March on 
roses, according to the sketch it was of the same shape as the well-known larva of D. lignicolor with the ante¬ 
riorly bent cone on the 4th segment, but besides with 4 smaller protuberances on the next segments and a point 
on the 11th segment. The colour of the body is ochreous, densely and irregularly spotted black as on the 
porcelain-white head, the protuberances, legs and abdominal legs rosy red. They went into the earth for the 
pupation and yielded the imago in April. 
D. minotelis Dyar (149 c) is closely allied to drucei and the female only differs in the somewhat broader 
wings and more greyish-brown, not so red colour, being somewhat lighter whitish subapically, so that the black 
wedge between the lowest subcostal branches and the triangular dark brown costal-marginal spot above it are 
more prominent, the anal angle being darker, too. The $ has also somewhat shorter wings and is smaller than 
drucei, with almost the same markings, the inner-marginal part not darkened at all, the costal margin dusted 
with red-brown; the discal streak which is only present in the lower half of the cross-vein in drucei is extended 
here as a long, distally concave fine streak along the whole lower border of the areole, in front of it the cell 
is somewhat lighter, behind it there is olive grey dusting; fringe along the distal half of the inner margin and 
at the anal angle deep purple brown. The types of this species fly in Mexico in the surroundings of the City. 
A larger and much darker race from Zacualpan is: — fumata /. n. (149 c) in which the costal margin is deeper 
red-brown, the subcosta below it dusted with iron black as far as the apex, a large blackish-brown spot behind 
the cross-vein, below this spot the anal half of the inner margin is extensively darkened olive grey, the double 
transverse lines are more distinct and darker red-brown, the hindwing feebly smoked. 
