PREPIELLA. By Dr. M. Deatjdt. 
261 
I. petrovna Schs. (33 d). Head and thorax grey and black, collar and 2 spots in the neck yellow, abdomen 
orange. Forewings grey, on the veins striped black, near the base with a faded white band; in the middle there 
is a white band bordered with black, with small black discal spots in it, growing somewhat broader above and 
below the middle; a large white subapical spot and several small, dentate, antemarginal spots. Hindwings 
yellowish-white with a blackish-brown margin growing much broader towards the apex. Expanse of wings: 
24 mm. Brazil. 
I. nexa Brd. (= grisea Pack., deserta Fldr.) (33 d) is greyish-brown on the anterior body, with a yellowish 
white vertex and collar. Abdomen light yellowish. Forewings blackish-grey with a basal, light yellow inner- 
marginal spot and a slightly oblique postmedian band not reaching the costal margin and being a little strangu¬ 
lated on the submedian fold. Hindwing light yellow with a large, blackish-brown apical spot. Expanse of 
wings: 22 mm. North America, California. 
I. dorsimacula Dyar (33 d) is sandy grey on the anterior body and forewings, the latter with a small, 
dirty white spot near the proximal angle and a very small one above it in the middle. Hindwings and abdomen 
yellowish, with a rosy tint; hindwing with a dark marginal band. Expanse of wings: 20 mm. California. 
I. lifaeromacula Dyar (33 cl) is quite similar, but the forewings have, behind the lower cell-end, a 
double, silvery white spot, above which white dots extend as far as the costal margin. Abdomen and hindwings 
of a more dirty yellow. Expanse of wings: 17 to 19 mm. California (Los Angeles). 
1. batialis Wkr. ( — stupidalis Wkr.) (33 d) is an entirely different, larger animal. Body strewn with 
a greyish black like the forewings; the latter exhibit 2 irregularly dentate, antemedian and postmedian transverse 
lines, a darker antemarginal undulate line, and a row of dots on the margin. Abdomen and hindwings whitish, 
the latter darkened at the apex. Expanse of wings: 25 to 32 mm. Brazil (Rio de Janeiro, Sao Paulo). 
I. faustinula Brd. (— fusca Stretch.). Light greyish-brown, on the forewings strewn with darker 
scales; a postmedian transverse band of a lighter grey, growing broader at the proximal margin, above it twice 
strangulated. Hindwings somewhat lighter. Expanse of wings: 24 mm. California. -— Larva blackish, head 
green, spotted black; across the dorsum a reddish-yellow line bordered with grey and black; black subclorsal lines 
interrupted by grey, and grey lateral bands; on yellow tubercles long blackish hairs being banded grey below 
the lateral stripes. It lives on lichens and pupates in a silky cocoon interwoven with hair. As nexa was bred 
from the same larvae, it is probably only a form of it. 
I. orbonella Hmps. (33 e) is unicolorously light greyish brown on the anterior body and forewings. 
Neck, collar, abdomen, and hindwings orange, the latter with a black marginal band. Expanse of wings: 24 mm. 
Brazil (Castro; Rio de Janeiro). 
I. citrina Drc. (33 e) is very well distinguished by the light golden green colour of the anterior body 
and forewings; forehead, vertex, shoulders, and metathorax spotted black; the forewings exhibit 2 black, dentate, 
antemedian and postmedian transverse stripes, from the postmedian stripe, on the middle radial, a stripe branches 
off to the margin. Costal margin at the base and before the apex black, so are the fringes. Abdomen and hind¬ 
wings orange, the latter with a black apical spot. Expanse of wings: 20 mm. Panama. — In the form intacta 
Bothsch. from Peru the apical spot on the hindwing is continued as far as the inner-marginal vein as a black 
marginal band. 
I. tessellata Dogn. (33 e). Head and thorax yellowish-white; vertex spotted brown, collar and shoulder- 
covers bordered with brown; abdomen yellow. Forewings golden lustrous white with 2 brown transverse lines, 
the distal one of which is expanded in the middle, where it encloses a white spot; both are connected by a 
brown longitudinal stripe continued to the margin; costal margin at the base and before the apex brown, like the 
fringes. Hindwing yellow, with a brown apical spot. Expanse of wings: 16 mm. Colombia: from the Rio Dagua. 
1. opulentana Wkr. (33 p). Palpi and forehead of a deep blue; vertex and collar metallic green, thorax 
golden yellow, anteriorly with a blue spot; abdomen yellowish-white, with lateral, orange hair-tufts. Forewings 
golden yellow with a dark blue antemedian band, composed of 3 wedge-shaped spots, at the lower cell-end 
a small blue sppt. Hindwing yellowish-grey with a dark marginal band. Expanse of wings; 20 mm. Amazon, 
Bolivia. 
I. Croesus Hmps. (= opulentana Hmps. $, nec <J) (33 e) differs from opulentana by its pale carmine 
abdomen and hindwings; the forewing exhibits in the <J a complete blue transverse band also behind the middle 
from the upper median vein to the proximal margin, in the $ only 2 spots; in the latter the marginal band of 
the hindwing is broader. Expanse of wings: J 16 mm, $ 20 mm. Espiritu Santo; Colombia (Muzo). 
I. ruficollis Schs. (= deceptans Dyar) (33 e) is an entirely one-coloured, small, brownish-black insect 
with a slight blue reflection; the first palpal joint, hindhead, and collar are orange. Expanse of wings: 22 mm. 
Brazil (Sao Paulo, Castro [Parana]). 
'petrovna. 
nexa. 
dorsima¬ 
cula. 
libero- 
macula. 
batialis. 
faustinula. 
orbonella. 
citrina. 
intacta. 
tessellata. 
opulentana. 
croesus. 
ruf icollis. 
40. Genus: I*repieJla Hmps. 
Proboscis developed; palpi rather short, porrect. Antennae of the combed or ciliated. Spurs of 
tibiae of medium length. On the forewing the upper median vein rises before, the middle radial vein above 
