PROSTHOPORUS, A NEW BOLIVIAN GENUS OF THE 
SUBTRIBE LYMEONINA (HYMENOPTERA, 
ICHNEUMONIDAE) 
By Charles C. Porter 1 
Department of Biological Sciences 
Fordham University, Bronx, N.Y. 10458, U.S.A. 
Since 1973 I have been conducting a Malaise Trap survey of 
Hymenoptera at the Bolivian government’s Agricultural Experi- 
ment Station near General Saavedra in the Department of Santa 
Cruz. Ing. Oscar Teran and Ing. Jose Rocavado of the Comision 
Nacional del Estudio de la Cana y del Azucar generously pointed 
out a protected remnant of subtropical wet forest for safe instal- 
lation of my traps and have supervised retrieval of samples at 
monthly intervals. The Committee for Research and Explora- 
tion of the National Geographic Society awarded grants for the 
summers of 1 973— ’75 which covered travel and equipment ex- 
penditures incurred during this project. More recently, a U.S. 
National Science Foundation Grant (No. DEB 75-22426) has 
provided funds for technical assistance in sorting and prepara- 
tion of the thousands of Hymenoptera so far accumulated by the 
trap survey. 
I have completed identification of the ichneumonids trapped 
at General Saavedra during 1 973— ’74 and among this material 
find a remarkable new genus belonging to the Subtribe Lymeo- 
nina of the Tribe Mesostenini. This genus now is described so as 
to make it available for inclusion in a phaenologic and biogeo- 
graphic study of the Saavedra ichneumonid fauna which I am 
preparing for publication at a later date. 
Prosthoporus new genus 
Length of fore wing: 9.0 mm. Body: slender. Front: without 
a median horn or carina, smooth and shining wth some weak 
shagreening. Clypeus: moderately large, in profile basad gently 
convex with highest point a little before middle and apicad flat- 
tened to slightly concave and without a median tooth or tubercle. 
'Research Associate, Florida State Collection of Arthropods, Florida Depart- 
ment of Agriculture and Consumer Services, Gainesville, Florida. 
Manuscript received by the editor February 10, 1977. 
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