STUDIES ON NEOTROPICAL POMPILIDAE 
(HYMENOPTERA). X. 
SUPPLEMENTARY NOTES* 
By Howard E. Evans 
Department of Zoology and Entomology 
Colorado State University, Fort Collins, Colorado 80523 
The neotropical region contains a rich and exciting fauna 
of pompilid wasps, reviewed in a very preliminary way by Banks 
(1946, 1947). It was my original intention to expand upon and 
improve Banks’ treatment, and toward this end I initiated a series 
of papers covering small segments of the fauna (Evans, 1965- 
1973b; see bibliography). The difficulties proved so great that 
I now propose to conclude this series with the present paper. 
The types of a great many species are in Europe or in South 
America, and even a recent trip to Buenos Aires was (due to a 
variety of unforeseen circumstances) unproductive from this 
point of view. Furthermore, at least three Latin American coun- 
tries have recently passed laws making the exportation of speci- 
mens difficult. Hence it seems to me wise to leave the field to 
a younger person with more time, money, and fortitude than I 
possess. 
The present paper includes species description and distribu- 
tional notes supplementary to various papers .in this series and 
also to my revision of the Mexican and Central American Pom- 
pilinal (Evans, 1966b). References to the previous 9 papers in 
this series are included in the bibliography. 
Mystacagenia a/biceps Evans 
I described Mystacagenia in 1973b to include three species, 
each known from a single female. Thus, the discovery of a single 
additional specimen is of interest. This is a female M. albiceps 
which agrees closely with the type of that species although from 
a very different locality. It was collected by M. Alvarenga at 
Jacareacanga, Para, Brazil, in December, 1968 [Canad. Nat. 
Coll., Ottawa]. The type is from near Marcapata, Peru. 
* Manuscript received by the editor January 26, 1977. 
263 
