1602 Hymenoptera in America North of Mexico 



Taxonomy: Evans, 1958. Amer. Ent. Soc, Trans. 84: 133, figs. 65, 66 (larva). 



Biology: Lin, 1967. Ent. Soc. Wash., Proc. 69: 343-346 (linear copulation). 

 fraternus Rohwer. Colo. (Florissant). 



Diodontus fraternus Rohwer, 1909. Amer. Ent. Soc, Trans. 35: 106. i. 

 gillettei Fox. Nebr., Colo., Idaho. Predator: Philanthus pulcher D. T., P. pacificus Cr. 



Diodontus Gillettei Fox, 1892. Amer. Ent. Soc, Trans. 19: 316. 9. 

 leguminiferus Cockerel]. N. Mex. (Santa Fe). 



Diodontus leguminiferus Cockerell, 1897. In Cockerell and Fox, Acad. Nat. Sci. Phila., 

 Proc 49: 141. cJ. 

 maestus Mickel. Nebr., Colo. 



Xylocelia maestus Mickel, 1916. Ent. Soc. Amer., Ann. 9: 347. S. 

 metathoracicus (Mickel). Ala., Mo., Nebr. Ecology: Nests in clay bank, the cell with up to 48 

 aphids. Prey: Hysteroneura setariae (Thos.). 

 Xylocelia metathoracicus Mickel, 1916. Ent. Soc. Amer., Ann. 9: 349. 9 . 



Biology: Rau and Rau, 1918. Wasp Studies Afield, pp. 102-108, figs. 27, 28 (nest, prey, 

 mating). 

 neomexicanus Rohwer. N. Mex. (Rowe). 



Diodontus neomexicanus Rohwer, 1909. Amer. Ent. Soc, Trans. 19: 317. 9. 

 nigritus Fox. Colo. 



Diodontus nigritus Fox, 1892. Amer. Ent. Soc, Trans. 19: 317. 9. 

 occidentalis Fox. Nebr., Ariz., Calif. Ecology: Nests gregariously in level sand, the cells 



provisioned with 23-30 aphids. Parasite: Omalus cressoni (Aar.). Prey: Aphis sp., Myzus 

 persicae Sulz. (?), Macrosiphum (Acyrthosiphon) sp., Rhopalosiphum sp. 

 Diodontus occidentalis Fox, 1892. Amer. Ent. Soc, Trans. 19: 315. 9,6. 



Biology: Powell, 1964. Wasmann Jour. Biol. 21: 155-176 (nest, prey, parasites, mating, life 



cycle, cocoon). 

 rugosus Fox. Ill, Nebr., Colo., Mont. 



Diodontus rugosus Fox, 1892. Amer. Ent. Soc, Trans. 19: 315. 3. 

 siouxensis (Mickel). Nebr. (Sioux Co.). 



Xylocelia siouxensis Mickel, 1916. Ent. Soc. Amer., Ann. 9: 350. 9. 

 spiniferus (Mickel). Nebr. (Omaha). 



Xylocelia spiniferus Mickel, 1916. Ent. Soc. Amer., Ann. 9: 348. 9. 

 striatus (Mickel). N. Dak., Wyo. 



Xylocelia striatus Mickel, 1916. Ent. Soc. Amer., Ann. 9: 350. 9. 

 vallicolae Rohwer. Colo. (Florissant, Boulder). 



Diodontus vallicolae Rohwer, 1909. Amer. Ent. Soc, Trans. 35: 104. S. 



Diodontus vallicolae salicis Rohwer, 1909. Amer. Ent. Soc, Trans. 35: 105. 6. 

 virginianus (Rohwer). N. Y., Md., Va. Ecology: Nests gregariously in flat soil, or in pockets of 

 soil between roots, the cell provisioned with up to 5 aphids. Parasite: Omalus 

 intermedins (Aar.). Prey: Prociphilus tesselatus (Fitch) nymphs; Typhlocyba sp. adult. 



Xylocelia virginiana Rohwer, 1917. U. S. Natl. Mus., Proc. 53: 175. S. 



Taxonomy: Evans, 1958. Amer. Ent. Soc, Trans. 84: 133, fig. 67 (larva). 



Biology: Krombein, 1951. U. S. Dept. Agr., Agr. Monog. 2: 964 (prey). — Krombein, 1958. Biol. 

 Soc. Wash., Proc. 71: 22-24 (nest, prey). —Krombein, 1963. Ent. Soc. Wash., Proc. 65: 264 

 (parasite). 



Genus PEMPHREDON Latreille 



The species nest in twigs, deserted galls, abandoned beetle burrows, or in rotten wood and 

 provision the cells with Aphididae. 



Genus PEMPHREDON Subgenus PEMPHREDON Latreille 



Pemphredon Latreille, 1796. Precis. Caract. Gen. Ins., p. 128. No species. 

 Type-species: Crabro lugubris Fabricius. Desig. by Shuckard, 1837. 



