544 
Psyche 
[Vol. 92 
This is the only Imperialis Group Trachysphyrus with an apically 
bisinuate clypeus, mostly white head, and broadly white marked 
gaster. It occurs in high Andean habitats (Puna and Altiplano) near 
the snowline and ranges from north Chile through adjoining Peru 
and south Bolivia to Catamarca Province of northwest Argentina. It 
flies during the warmest months of the year (late October to Janu- 
ary) and even then endures temperatures of at most 8-15°C by day 
and hard frosts every night. 
New Specimens Examined. 1 $: CHILE, Tarapaca Province, 
Putre, 3400 m, “Nov.” This specimen is in the collection of the 
Centro de Investigation y Capacitacion Agricola (C.I.C.A.) of 
the Universidad del Norte at Arica, Chile. 
Acknowledgments 
This research was supported by my NSF Grants BSR-83 13444, 
DEB-75-2246, and GB-6925. Awards for fieldwork in South Amer- 
ica were provided in 1973-1975 and in 1979 and 1981 by the Com- 
mittee for Research and exploration of the National Geographic 
Society. Fordham University Faculty Fellowships covering the 
Spring Semester of 1980 and the Fall Term of 1984 also greatly 
facilitated museum visits and field studies essential to this project. 
In north Chile my activities were supported by the Universidad 
del Norte (now Universidad de Tarapaca), which furnished labora- 
tory space and allowed unrestricted use of field vehicles. For their 
incomparable generosity, patience, and kindness, I am indebted to 
Dr. Raul Cortes P., Ing. Alfonso Matta V., Ing. Hector Vargas 
C., Tec. Agr. Nelson Hichins O., and to Aux. Gerardo Diaz P., all 
of the Departamento de Agricultura of the then Universidad del 
Norte. Collecting in north Chile also was facilitated by the Chilean 
National Park Service and by the Chilean National Electric 
Company (ENDESA), both of which made available fine accom- 
modations at guest houses in remote areas of the Tarapaca 
highlands. 
As a Research Associate of the Florida State Department of 
Agriculture and Consumer Services, I received much help with this 
research. I am particularly indebted to Dr. Lionel A. Stange of that 
institution, who accompanied me on several extended field trips in 
the Peruvian Desert. 
The Scanning Electron Microscope photographs were taken by 
Mr. Jaime Zung of Fordham University, using a Hitachi S-510 
under the supervision of Dr. E. Ruth Witkus. 
