492 
Psyche 
[Vol. 92 
Much of the fieldwork for this study was done in north Chile 
thanks to extraordinarily selfless and cordial cooperation from the 
Universidad del Norte at Arica, among whose personnel I especially 
thank Dr. Raul Cortes P., Ing. Alfonso Matta, Ing. Hector 
Vargas, Tec. Nelson Hichins O., and Aux. Gerardo Diaz P. 
Mr. Jaime Zung of Fordham University prepared the Scanning 
Electron Microscope photographs. I am appreciative of his patience 
in obtaining excellent pictures without the standard gold coating. 
Mr. Zung worked under Dr. E. Ruth Witkus, Professor and former 
chairman of Fordham Biology. 
Summary 
The mesostenine genus Cosmiocryptus ranges from Ecuador to 
Tierra del Fuego in Andean, temperate, xeric, subtropical, margin- 
ally tropical, and Neantarctic biomes. It has 8 species in the Coastal 
Desert, of which 7 (C. violaceipennis, C. weyrauchi, C. diplatys, C. 
aricae, C. leptaechma, C. leucetrum, and C. occidens) seem to be 
endemic, while the eighth, C. huascar, ranges across the Peruvian 
Andes as far as Cuzco. As here characterized, Cosmiocryptus 
includes mesostenine ichneumonids related to Trachysphyrus but 
with the axillus vein almost appressed to the anal margin of the hind 
wing. It is also related to Chromocryptus but usually lacks large 
punctures on the 2nd gastric tergite and a baso-lateral expansion on 
the 1st tergite. Herein described are 4 new species of Cosmiocryptus: 
C. occidens and C. leucetrum from north-central Peru plus C. 
aricae and C. leptaechma from north Chile. 
Literature Cited 
Porter, C. 1967. A revision of the South American species of Trachysphyrus. 
Mem. Amer. Ent. Inst. 10 : 1-368. 
Porter, C. 1979. Ichneumonidae de Tarapaca. I. Subfamilia Ephialtinae (Ich- 
neumonidae). Idesia: Departamento de Agricultura de la Universidad del Norte- 
Arica 5: 157-87. 
Solbrig, O. 1976. The origin and floristic affinities of the South American tem- 
perate deciduous and semidesert regions. In D. Goodall (ed.), Evolution of 
Desert Biota, pp. 7-49. Univ. of Texas Press, Austin. 
Townes, H. K. 1969. Genera of Ichneumonidae, Part 2: Gelinae. Mem. Amer. 
Ent. Inst. 12 : 1-537. 
