174 
Psyche 
[June 
sides, in dorsal view, almost straight for more than half the distance 
from spiracle to apex, then rather abruptly rounded-off; a little less 
strongly convex above than in P. willinki. 
remarks : This species is intimately related to P. willinki but differs 
especially in the scarcely receding temples and in the much more 
broadly polished and shining, more sparsely setose, lower and more 
strongly sloping propodeum. It is possible that future collecting will 
show that P. hesperios is a geographic race of the Argentine species, 
particularly since there is a wide overlap of the Argentine and Chilean 
insect faunas from about the latitude of Concepcion southward. On 
the other hand, the distinguishing characters are of a type that 
generally has specific value in the Trachysphyrus Group so that the 
most reasonable course at present seems to be the recognition of two 
distinct species. 
specific name: Hesperios is a Greek adjective meaning western. 
Resumen 
El autor describe Picrocryptoid.es, un genero nuevo argentino y chileno 
de la tribu Mesostenini de la familia Ichneumonidae ( Hymenoptera) . 
Picrocryptoides es muy parecido a Trachysphyrus Haliday ( Cryptus 
auctorum) pero se diferencia de Trachysphyrus por tener el clipeo 
elevado en forma de una piramide asimetrica, la area ocellar elevada 
y ensanchada, la epomia prolongada hacia arriba en forma de una 
placa ancha, por tener la celda radial de la ala anterior inusitadamente 
corta, y por la expansion triangular de la base del peciolo. Se describen 
dos especies, ambas nuevas: P. willinki de Argentina y P. hesperios 
de Chile. 
