1968] 
Evans — Neotropical Pompilidae 
19 
interocular distance .92 X lower, .80 X middle intei ocular distance, 
postocellar line more than twice the ocello-ocular line, the latter only 
about a third the maximum diameter of a posterior ocellus. First 
four antennal segments in a ratio of about 18:5:23:22, segment three 
equal to .92 X the upper interocular distance. Postnotum nearly as 
long as metanotum, though much shorter at the midline, where it is 
constricted; slope of propodeum very low and even. Abdomen long 
and slender; subgenital plate flat, with strong marginal bristles; 
genitalia with the parameres broad, bearing a partially double row 
of slender, blunt spines, the aedoeagus of characteristic shape (Fig. 
17 ). 
Specimens examined . — 5 $$, 19 cf cf . brazil: i cf , Hyutanahan, 
Rio Purus, Amazonas, March [paratype, Mus. Comp. Zool.] ; 1 
Peru-Brazil Frontier, 21 Jan. 1928 (H. Bassler) [Mus. Comp. 
Zool.]. Peru: 4 13 cf cf > Quincemil, Dept. Cusco, 750 meters, 
Aug.-Oct. 1962 (L. Pena) [Mus. Comp. Zool., Coll. H. K. 
Townes]; 2 cf cf? Avispas, Madre de Dios, 400 meters, Sept.-Oct. 
1962 (L. Pena) [Mus, Comp. Zool.] ; 2 cf cf , Paucartambo, Dept. 
Cusco, 400 meters, March 1952 (F. Woytkowski) [H. K. Townes]. 
Bolivia: 1 cf , Prov. Sara [ = Santa Cruz], 450 meters, (J. Stein- 
bach) [Carnegie Mus.]. 
Variation. — The five females exhibit little variation in size, color, 
or standard measurements (fore wing 17-20 mm). In the specimen 
from the Peru-Brazil border, the ocelli are even larger than described 
above, the postocellar line being 1.8 X the ocello-ocular line, the latter 
only about half the diameter of a. lateral ocellus; in this specimen the 
upper interocular distance is only .65 X the length of the third an- 
tennal segment. 
In contrast, the males exhibit much variation in size and color. In 
the Quincemil series, the smallest male has a fore wing length of 
only 9.5 mm, the largest 15.5 mm. None of the other males are 
smaller, but one from Paucartambo, Peru is larger: fore wing 17 
mm. In several specimens the dorsal areas described as light fer- 
ruginous in the paratype are more or less tinged with fuscous, al- 
though in many cases the pleura and legs are more extensively yellow 
than in the paratype. The abdominal banding is especially variable; 
in several specimens there are narrow bands of yellow at the base of 
the second (and sometimes the third) tergite in addition to the usual 
fuscous apical bands on a ferruginous background; in one of the 
Paucartambo males and especially in the one from Bolivia, the band- 
ing is largely obscured by a light fuscous coloration except on the 
