126 
Psyche 
[March 
the entrance and a bottom half with lobes roughly corresponding to 
the cells within. The six cells are mass provisioned with Thysan- 
optera ( Leucothrips and Bradinothrips ) , a new prey record for the 
genus, with as many as 17 1 individuals found in one cell. One male 
and 3 female wasps were present in one nest collected at night. 
Literature Cited 
Ducke, A. 
1907. Nouveau genre de sphegides (Hym.). Ann. Entomol. Soc. France, 
76: 28-29. 
DU Buysson, R. 
1907. Description d’un sphegide nouveau (Hym.). Ann. Entomol. Soc. 
France, 76 : 29-30. 
Howes, P. G. 
1925. Master architects of the jungle. Nature Mag., 6: 274-276. 
Krombein, K. V. 
1967. A new Collembola-hunting Microstiff mus with notes on M. guia- 
nensis Rohwer (Hymenoptera, Sphecidae). Entomol. News, 78: 
253-256. 
Matthews, R. W. 
1968a. Microstigmus comes: sociality in a sphecid wasp. Science, 160: 
787-788. 
1968b. Nesting biology of the social wasp Microstigmus comes (Hymen- 
optera: Sphecidae, Pemphredoninae) . Psyche, 75: 23-45. 
Pate, V. S. L. 
1937. Studies in the pemphredonine wasps (Hymenoptera, Sphecidae) 
I. New genera and species of the ammoplanoid complex. Trans. 
Amer. Entomol. Soc., 63: 89-125. 
Richards, O. W. 
1932. A note on the genus Microstigmus Ducke, with the description 
of a new species. Ann. Mag. Nat. Hist., (10) 9: 372-377. 
Rohwer, S. A. 
1923. Three new pemphredonine wasps (Hymenoptera). J. Wash. Acad. 
Sci., 13: 369-371. 
Turner, R. E. 
1927. A new species of Microstigmus (Hym. Sphegid.). Bull. Entomol. 
Res., 20: 407-408. 
