1952] 
Creighton — Camponotus papago 
157 
Thorax feebly shagreened and rather strongly shining, 
with small, scattered, appressed hairs as in the major. 
Erect hairs absent on the thorax except for a pair of long, 
yellowish hairs which arise from the scutellum. Gaster 
more feebly shagreened and more strongly shining than 
the thorax but with similar appressed hairs. Erect hairs 
on the gaster only moderately abundant, mostly confined 
to a row at the rear of each segment. Erect hairs on the 
terminal gastric segment distinctly longer than those else- 
where. Fore femora laterally compressed as in the major. 
Color blackish brown, the anterior quarter of the head, 
much of the scutum and the middle and hind tarsi yellow- 
Text-figure 2. Truncated surface of head of major worker of Campo- 
notus ( Colobopsis ) papago sp. nov. 
ish brown. Wings hyaline, iridescent and with pale yel- 
lowish veins. 
Male: Head 0.7 mm., thorax 1.5 mm., overall length 
3.5 mm. 
The sides of the head in front of the eyes taper slightly 
from the anterior edge of the eye to the insertion of the 
mandible. Behind the eyes the sides of the head are evenly 
