1968] 
Evans — -Neotropical P ompilidae 
7 
ICHNEUMONIDAE 
Carinodes sp. 
Colpotrochia sp. I (Fig. 4) 
Colpotrochia sp. 2 (Fig. 6) 
Cubus sp. (Fig. 7) 
Dolichomitus zonatus Cresson (subsp.) (Fig. 5) 
Ephialtes bazani Blanchard (Fig. 8 ) 
Ichneumoninae (Genus and Species?) 
Metopius sp. 
Theronia lineata Fabricius 
Porter has supplied me with notes on the behavior and occurrence 
of some of these wasps. The male Chirodamus were taken along 
trails in wet forest, usually flying in undergrowth about 1-4 feet off 
the ground. He notes that of all members of this complex they have 
the fastest flight, “usually appearing only as a furtive yellow streak 
against a dark background of foliage”. Theronia, Carinodes, and an 
unidentified member of the Ichneumoninae also flew here, although 
somewhat more slowly, while Ephialtes bazani, a species with a 
disagreeable odor, occurred here but was quite sluggish in its flight. 
The species of Colpotrochia tended to occur in more open situations, 
and one of them was one of the most abundant insects at Horco 
Molle, sometimes swarming in high grass in sunshine but being 
scarcer in the forest. Since workers of the various social wasps tend 
to forage in a variety of situations, they may of course provide a 
unifying factor for wasps of somewhat diverse modes of life. All of 
these wasps are essentially inhabitants of vegetation somewhat above 
the ground, in contrast to the majority of “Pr^w-mimics”, which 
spend much time walking over the ground in the search for terrestrial 
spiders. 
In this instance we know that the male Chirodamus fly in the 
same situations as other, similarly colored wasps, but in the other 
cases of supposed dual mimicry the evidence is more indirect. The 
female C. longulus (Fig. 12) is very similar in appearance to that 
of C. argentinicus (Fig. 10) and to Priocnemioides unifasciatus lutei- 
cornis (Fig. 13). Luis Pena also took Priocnemella omissa Banks 
(Fig. 1 1 ) at the same locality as a series of longulus , and there are of 
course species of Pepsis of basically this same coloration in this same 
area. There seems no question that the female longulus belongs to 
this same complex of “ Pepsis mimics”. 
The male of longulus is patterned with brownish-ferruginous and 
fuscous, with dull yellowish markings on the head and thorax; the 
abdomen is weakly banded with fuscous but lacks yellow markings 
