436 
Psyche 
[Vol. 92 
Fig. 1 1. Chromocryptus teres. $. Holotype. Body in lateral view, showing habi- 
tus and color pattern. 
logical Museum of the University of Kansas (1(5), and in the Collec- 
tion of Texas A&M University (1<5). 
Relationships. Chromocryptus prosopis is very similar to the 
nearly sympatric C. tomsici. Besides the diagnostic features cited in 
the key, C. prosopis has the 1st female flagellomere 5. 0-5. 6 as long 
as deep at apex (5. 8-6.0 in C. tomsici) and the female malar space 
0.93-1.0 as long as the basal width of the mandible (0.84-0.85 in C. 
tomsici). 
Field Notes. The type locality is in the Dry Chaco Biome of 
northern Argentina, a semideciduous subtropical forest and scrub 
characterized by such plants as Prosopis, Acacia, Cercidium, Schi- 
nopsis, Aspidosperma, Celtis, Condalia, Zizyphus, Trithrinax, 
Opuntia, and many other xerophytes. This community in floristic 
composition and environmental parameters much resembles the 
south Texas Thorn Scrub, where Chromocryptus mesorufus has 
been collected. 
Hosts. All of the type specimens were reared from a single, 
large, tough, gray cocoon found on Prosopis alba (Leguminosae), a 
South American mesquite. Gregarious parasitism also has been 
observed in the North American Chromocryptus planosae (Townes 
1962: 258). 
