1973 ] 
Evans — Neotropical Pompilidae 
225 
Key to Neotropical genera of Auplopodini ( Females ) 
(Modified from Banks, 1946, and Townes, 1957) 
1. Apex of front tibia on outer side with a. strongly differentiated, 
curved, hooklike spine; clypeus large, extending well beneath 
bottoms of eyes 2 
Apex of front tibia without a strong, curved spine that is well 
differentiated from the other spines 3 
2. Last segment of middle and hind tarsi spined beneath ; lower part 
of mesopleurum with a projection; clypeus strongly emarginate 
Phanochilus Banks 
Last segment of all tarsi smooth beneath ; mesopleurum without a 
prominence; clypeus truncate Priocnemella Banks 
3. Mandibles with a basal tuft of long, pale setae which cover much 
of the mandibles; malar space at least half as long as width of 
mandibles at their base (Figs. 1, 3) 
Mystacagenia , new genus 
Mandibles without such modification, simple and with scattered 
setae; malar space less than half as long as width of mandibles 
at their base, often nearly absent 4 
4. Apical tergite covered with bristles and without a differentiated 
pygidial area; mentum with or without a few thin setae scat- 
tered along its length Ageniella Banks 
Apical tergite with a median area which is devoid of setae and 
more or less smooth, often polished ; mentum with a group of 
stout setae arising near the base and directed forward 5 
5. Malar space about one third as long as width of mandibles at 
their base; temples prominent, nearly as wide as eyes; tooth of 
claws quite close to outer ray (males macrocephalic, Fig. 10) 
D im orp hagenia, new genus 
Malar space small or absent, mandibles and lower eye margins 
nearly in contact; temples narrow, receding; tooth of claws 
well separated from outer ray Auplopus Spinola 
Key to Neotropical subgenera of Ageniella ( Females ) 
1. Propodeum with an abundance of erect hair 2 
Propodeum without hair or with a few inconspicuous hairs on 
the sides 4 
2. Mentum at most with a few short, inconspicuous setae; mostly 
small species, under 14 mm Ameragenia Banks 
Mentum with a number of rather long setae; larger species, 
mostly over 15 mm 3 
