Publ. 15. VI. 1937. 
CRYPTOBIA. By Dr. A. Seitz. 
1265 
Leach, in 1815, was the first who used the name of Cossidae for denoting the Gossus and their allies 
as a group, for which reason the family must bear his name as the author’s name. The typical genus is Gossus 
F. (1794) with the typical species: cossus L. (1758). 
Key to t h e American Genera. 
I. Vein 11 of forewing from the areole or close before its origin.Zeuzerinae. 
1. Areole long and narrow, projecting beyond the end of the discal cell. 
a) Sexes dissimilar. Hindwing of $ triangular. Cryptobia H.-Schdff. 
b) Sexes similar. 
a x Discal vein of forewing forked, 
a 2 Veins 7 and 8 of fore wing stalked, 
a 3 Veins 7 and 8 of hindwing separated. Xyleutes Hbn. 
b 3 Veins 7 and 8 of hindwing connected by a cross-vein. Zeuzera Latr. 
b 2 Veins 7—10 free, near the end of the areole ,. Schreiteria Dyar 
b x Discal vein of fore wing not forked. Garohamilia Dyar 
2. Areole short and obtuse, not projecting beyond the discal cell 
a) Veins 7—9 of forewing stalked, or 7 connected with the base of the stalk of 
8 and 9. Trigena Dyar 
b) Vein 7 remote from the stalk of 8 + 9, or the veins separated, 9 sometimes stalked 
with 10. Cossula Bailey 
II. Vein 11 of forewing from the centre of the discal cell.Cossinae. 
1. Fore wing with separated anal veins. 
a) Discal veins of forewing and hindwing not forked. Heterocoma B. X McD. 
b) Discal vein of forewing forked, of hindwing plain 
a x Cell of hindwing moderately long. Miacora Dyar 
bj Low'er cell-angle very long, % of the length of the wing. Psychopsis Dyar 
c) Discal vein forked in both wings 
a x Veins 7 and 8 of hindwing free (with rare exceptions) 
a 2 Cell of hindwing rounded. Chilecomadia Dyar 
b 2 Cell of hindwing inwardly angled 
a 3 Veins 6 and 7 of hindwing from the same base. Hypopta Hbn. 
b 3 Veins 6 and 7 of hindwing separated, connected by a bar behind the cell Pernambis Schs. 
b x Veins 7 and 8 of hindwing connected by a bar 
a 2 Sexes similar; thorax densely clad. Acossus Dyar 
b 2 Sexes dissimilar; thorax thinly clad. Prionoxystus Grt. 
2. Anal veins of fore wing connected by a bar or united near the margin 
a) Discal vein forked in both wings 
a x Veins 6 and 7 of hindwing from one base or stalked 
a 2 Hindwing rounded, normal. Givira Wkr. 
b 2 A hindwing triangular. Psychogena Schs. 
b x Veins 6 and 7 of hindwing separated, almost parallel. Langsdorfia Hbn. 
b) Discal veins not forked in both wings 
a x Veins 6 and 7 of hindwing stalked. Puseyia Dyar 
b, Veins 6 and 7 of hindwing separated, almost parallel. Inguromorpha H. Edw. 
1. Genus: Cryptobia H.-Schajf. 
The $$ are large strong insects, the GG much smaller and of a darker colouring. $ antennae pectinated 
only in the basal halves, plain in the Vein 11 of forewing arises close before the base of the long narrow 
areole which extends far behind the discal cell from the apex of which 7 and 8 arise stalked, 9 arising from 
the base of the stalk; 10 shortly before it; the discal veins are broadly forked in both wings. 6 and 7 of the 
hind wing arise distantly separated, 8 free. 
Type: C. mucorea H.-Schdff. 
C. mucorea H.-Schdff. (181 a) is at once discernible by the yellow hindwing with a narrow margin. The 
brown ground of the forewing is striped brownish black. Brazil. 
C. rnusae H.-Schdff. (= muscae Ky.) (181 a). Herrich-Schaefer figures a $ from the Rio Grande, 
in the National Museum there are specimens from Mexico, Central America, Ecuador, and Colombia. The ab- 
VI 
mucorea. 
musac. 
159 
