1640 Hymenoptera in America North of Mexico 



Genus NITELA Latreille 

 Genus NITELA Subgenus NITELA Latreille 



Nitela Latreille, 1809. Gen. Crust. Ins., v. 4, p. 77. 



Type-species: Nitela Spinolae Latreille. Monotypic. 

 Rhinonitela Williams, 1928. Hawaii Sugar Planters' Assoc. Expt. Sta., Bui. Ent. Ser. 19: 97. 



Type-species: Rhinonitela domestica Williams. Orig. desig. 



Only the typical subgenus occurs in North America. Two of our species have been recorded as 

 nesting in abandoned burrows of other insects in wood or twigs. There are no prey records for 

 American species; several Palaearctic species have been reported to prey upon Psocoptera, 

 Aphididae and Psyllidae. 



Taxonomy: Pate, 1937. Brooklyn Ent. Soc, Bui. 32: 5-7 (key to N. Amer. spp.). 

 cerasicola Pate. N. Y. (Long Isl.). Ecology: Reared from burrow in dead cherry tree. 

 Nitela cerasicola Pate, 1937. Brooklyn Ent. Soc, Bui. 32: 5. 9. 



floridana Pate. Fla. 



Nitela floridana Pate, 1934. Ent. News 45: 241. 9. 



Iconi Krombein. Fla. 



Nitela leoni Krombein, 1968. Nat. Canad. 95: 700. 9, cJ. 



townesorum Krombein. Calif. (Yosemite Park). 



Nitela townesorum Krombein, 1950. Pan-Pacific Ent. 26: 130. 9. 

 virginiensis Rohwer. N. Y. to Fla., W. Va., Mich., Wis., Miss. Ecology: Nests in twigs of Rhus 

 glabra. 



Nitela virginiensis Rohwer, 1923. Ent. Soc. Wash., Proc. 25: 100. 9. 



Taxonomy: Krombein, 1958. Ent. Soc. Wash., Proc. 60: 60. 6. 

 Biology: Krombein, 1951. U. S. Dept. Agr., Monog. 2: 945 (nest). 



Subfamily TRYPOXYLONINAE 



So far as known all members of this subfamily prey upon small spiders, storing rather large 

 numbers per cell. A few species nest in the ground, utilizing pre-existing cavities or burrows of 

 other arthropods. A number of species build free mud cells; our familiar pipe-organ wasp, 

 Trypargilum politum, is the only North American representative having this habit. The majori- 

 ty of species nest above ground in cavities of various kinds such as abandoned beetle borings in 

 twigs, logs or structural timber, old mud-dauber nests and hollow stems. 



Taxonomy: Evans. 1957. Amer. Ent. Soc, Trans. 83: 89-99, figs. 36-68 (larvae). —Evans, 1959. 

 Amer. Ent. Soc, Trans. 85: 157-161, figs. 64-70 (larvae). 



Genus PISONOPSIS Fox 



Piso7wpsis Fox, 1893. Psyche 6: 553. 



Type-species: Pisonopsis clypeata Fox. Monotypic. 



The North American birkmanni makes a linear series of cells in borings in stems. P. clypeata 

 apparently usually makes a similar series of cells in pre-existing burrows in the soil, but it has 

 also been reported as nesting in trap stems at ground level. 



Revision: Williams, 1954. Pan-Pacific Ent. 30: 235-246 (N. Amer. spp.). 

 birkmanni Rohwer. Tex. to south. Calif.; Mexico. Ecology: Nests in borings in Sambucus, in 

 stems of oats, white sage, poison hemlock, and in trap stems. Parasite: Ceratochrysis 

 antyga Boh.; Photopsis sp. Prey: Thomisidae spp. 

 Pisonopsis birkmaiini Rohwer, 1909. Amer. Ent. Soc, Trans. 35: 129. 9. 



Taxonomy: Evans, 1959. Amer. Ent. Soc, Trans. 85: 157, figs. 64-70 (larva). 



Biology: Williams, 1954. Pan-Pacific Ent. 30: 236, 238 (nest, prey, cocoon). —Parker and 

 Bohart, 1966. Pan-Pacific Ent. 42: 94-95 (nest, parasite). —Parker and Bohart, 1968. 

 Pan-Pacific Ent. 44: 3 (nest, parasite). 



