1968] 
Evans — Neotropical Pompilidae 
21 
far beyond origin of basal vein; second submarginal cell 2.4 X as 
wide as high, receiving first recurrent vein two-thirds the distance 
from base; third submarginal cell twice as wide as its maximum 
height, receiving second recurrent vein .4 distance from base. Abdo- 
men very slender, the first segment especially so; subgenital plate 
spatulate, rather blunt apically, with a few strong lateral setae; 
genitalia with double basal hooklets and with strong pegs on the 
parameres, but otherwise with quite differently shaped volsellae, para- 
penial lobes, and aedoeagus from other members of this complex 
(Fig. 16). 
Chirodamus impensus new species 
Ilolotype. — cf, Paraguay: C. Pfannel, Guaira, Dec. 195° 
(Foerster) [Mus. Comp. Zool., No. 31599]. 
Description of male type. — Length 17 mm; fore wing 15 mm. 
Coloration pale, patterned with yellow, light ferruginous, and black 
(it is possible that the light ferruginous represents discoloration from 
cyanide) ; head mostly light ferruginous, tips of mandibles black, cen- 
tral part of front above antennae and a band between eye tops black, 
upper surface of flagellum slightly infuscated ; pronotum yellow, 
tinged with rufous above; mesoscutum fuscous, with a pair of yellow 
discal lines which fuse behind ; scutellum yellow, with some basal 
and apical black connected by a thin, black median streak; metanotum, 
postnotum, and propodeum yellow; pleura yellow, suffused with 
rufous on the upper half; coxae yellow, legs otherwise light fer- 
ruginous; abdomen ferruginous over basal three segments, remainder 
fuscous; pterostigma brown, wing membranes lightly tinged with 
yellowish brown. Temples and propleura with numerous pale setae; 
propodeum with a few weak setae on the extreme sides; abdominal 
venter with numerous very short setae. Lab rum slightly exserted, 
truncate; clypeus 1.85 X as wide as high, truncate apically. Head 
1.09 X as wide as high; front of moderate width, middle interocular 
distance .54 X width of head; upper interocular distance .90 X 
lower interocular distance; ocelli not greatly enlarged nor ocellar 
triangle notably elevated ; lateral ocelli removed from eye margins 
by 1.35 X their own greatest diameter; ocello-ocular line very slight- 
ly exceeding postocellar line. First four antennal segments in a ratio 
of about 19:5:19:18, third segment 2.5 X as long as its apical width, 
0.6 X as long as upper interocular distance. Thoracic features as in 
imitator , but the propodeum decidedly gibbous along the median area, 
especially toward the base. Wing venation as described for imitator 
