MIMAGYRTA; CHROSTOSOMA. By Dr. M. Draudt. 67 
margins. Distributed from Panama through Guiana and Brazil as far as Paraguay and Argentina; it flies in 
day-time on compositae. 
25. Genus: Mimagyrta Hmps. 
Is nearly allied to the following, from which it differs by the lower radial nervules rising separately; 
the upper radial rises somewhat below the upper cell-angle, the most central subcostal vein being absent; the 
cell of the hindwing is much shorter; the upper median vein rises from the lower one shortly before the margin. 
M. pampa Druce (12 k) strikingly resembles an Agyrta: the abdomen and part of the wings with a 
blue gloss, the wings exhibit hyaline spots exactly like there. The base of the palpi, sides of the forehead and 
stripes on the hips, femora and venter are white; Amazon; also from Peru (Pachitea). 
M. pulchella Klages strikingly resembles Chrostosoma tricolor Fldr. (12 m). The body is above black- 
brown, beneath white inclusive of the legs; front of the palpi, forehead, shoulders and mesothorax white-spotted; 
subdorsal stripes and interrupted lateral stripes on the abdomen whitish; on the collar metallic-blue scales. The 
black-brown forewings exhibit at the costal base a white dot, below the cell-base a broad, yellow stripe, an 
oblique, yellow spot in and below the cell-end and an oblique, hyaline band beyond it; base of the inner margin 
metallic blue. The hindwings exhibit a yellow longitudinal band below the cell and a blue inner margin. Vene¬ 
zuela. 
26. Genus: C'lirostosonia Hmps. 
In many ways allied in its exterior to the genus Saurita from which it differs by its shorter palpi which 
do not reach the vertex, as well as by the lower radial being longer pedicellated with the lower median vein 
of the hindwing; furthermore, the uppermost subcostal vein of the forewing rises on a common pedicle with 
the other subcostal veins and not freely from the cell. 
Ch. decisa Wkr. (12 k) has like the following a black-brown body, carmine-red spots on the shoulder- 
covers and on the middle of the first abdominal ring; metallic blue lateral spots; the underside is white; in 
contrast with the following species, the vertex and metathorax are spotted with metallic-blue, and the browm 
marginal band of the whitish hindwings sends forth a long continuation towards the base below' the cell. Amazon, 
Bolivia. 
Ch. haematica Perty (= zantes H.-Schclff ., fenestrina Btlr., chalconitis Druce) greatly resembles the 
preceding, but on the vertex the blue colour is absent, the wings are in the basal part more smoky hyaline 
and on the hindwings the continuation of the marginal band towards the base is shorter. From Ecuador and 
Brazil. 
Ch. viridipunctatum Rothsch. (12 k) is allied to the preceding species and is easily discernible by 
entirely hyaline forew'ings with a broad, black-brown middle band and apical spot. Head, metathorax and 
abdominal sides are spotted in a bright metallic green. Described from Brazil. 
Ch. schausi Rothsch. (12 1). Head and thorax metallic green, shoulders carmine; first abdominal 
segment carmine; the rest of the abdomen metallic green, black-curled and with a black middle line. The antennae 
are black; legs black-brown, at the tibiae with metallic-green spots; hind tarsi w'hite. The hyaline forewing 
exhibits a broad, black middle band and black apical spots. This magnificent, small species has become known 
from Panama (Chiriqui) and Ecuador (Paramba). 
Ch. chrysiridia spec. nov. (12 1) has a body similar to that of viridipunctata; body black. Forehead, 
vertex, meso- and meta-thorax with large, green metallic spots; first abdominal ring above carmine, the other 
segments exhibit uncommonly large, metallic-green, brass-lustrous subdorsal spots. Forehips white; palpi, 
legs and antennae quite black. The w'ings are brownish hyaline with narrow', black-brown margins and veins. 
This magnificent species originates from Colombia (Rio Aguaca Valley, 2000 m), type in Coll. Fassl. 
Ch. fumosum Schaus. Body black, on the shoulders, shoulder-covers and first abdominal ring above 
spotted in carmine. Forewings smoky-brown diaphanous, at the distal margin blackened, veins and fringes 
fine black. Hindwings semi-diaphanous black. Expanse of wings: 25 mm. Costa Rica. 
Ch. destricta spec. nov. (12 1). Sooty black; vertex and shoulders red-spotted. The metathorax 
exhibits a square, scarlet spot, follow'ed by a whitish spot on the first abdominal segment. The wings are sooty 
hyaline, iridescent with very broad, black veins; margins, apical spots of both pair of wings and the inner- 
marginal half of the hindwing are black. Described according to a male example from Panama (Lino, 800 m) 
(Fassl). 
Ch. fassli spec. nov. (12 1) resembles the preceding, though it is larger, with broader wings. Head 
and 1st abdominal ring quite brownish-black, shoulder-covers red-spotted. Apex of the forewing broader 
browmish-black. Collar and Abdominal sides with a blue gloss. East Colombia (2200 m). (Fassl.) 
parnpa. 
pulchella. 
decisa. 
haematica. 
viridipunc¬ 
tatum. 
schausi. 
chrysiridia. 
fumosum. 
destricta. 
fassli. 
