1648 Hymenoptera in America North of Mexico 



scaeva (Bl). Prey: Clubiona obesa Hentz, C. pallens Hentz; Aysha gracilis (Hentz), 

 Anypkaena celer (Hentz), A.fraterna (Bks.), A. pectorosa Koch; Philodromus washita 

 Bks., P. infvscatus Keys., P. praelustris Keys., P. riifiis (Walck.), P. pemix Blackw., P. 

 spp.; Salticidae sp.; Pisaurina mira (Walck.), P. sp.; Mimefus puritanus Chamb.; Wixia 

 ectypa (Walck.), Eustala anastera (Walck.), E. emertoni Bks., Acacesia hamata (Hentz), 

 Mangora gibberosa (Hentz), M. maculata (Keys.), Neoscona arabesca (Walck.), N. 

 domiciliorum (Hentz), A^. mijiima Camb., N. spp., Araneus juniperi (Em.), A. 

 patagiatus Clerck, A. mamnoreus Clerck, A. spp., Araniella displicata Hentz, 

 Neosconella pegnia (Walck.), Argiope trifasciata (Forsk.), Conepeira glyphica Archer, 

 Araneidae spp.; Theridion differens (Em.), T. murarium (Em.); Poecilochroa capulata 

 (Walck.); snare-building spiders are preferred to errant by ratio of 13: 1. Predator: 

 Trogodenna ornatnn2 Say; Lecontella ca^icellata (LeC). 



Trypoxylon lactitarse Saussure, 1867. Reise d. Novara, Zool., v. 2, Hym., p. 81. 3 . 



Trypoxylon striatuyn Provancher, 1888. Addit. Corr. Faune Ent. Canada Hym., p. 283. 9. 



Trypoxylon cinereum Cameron, 1889. Biol. Cent.-Amer., Hym., v. 2, p. 40. 9, 6. 



Trypoxylon albopilosum Fox, 1891. Amer. Ent. Soc, Trans. 18: 139. 9,6. 



Trypoxylon albopilosum planoense Rohwer, 1909. Ent. News 20: 380. 9. 



Taxonomy: Evans, 1957. Amer. Ent. Soc, Trans. 83: 94, fig. 55 (larva). — Evans, 1959. Amer. 

 Ent. Soc, Trans. 85: 161 (larva). — Menke, 1974. Ent. Soc. Wash., Proc 76: 418 (identity of 

 lactitarse Sauss.). 



Biology: Peckham and Peckham, 1895. Psyche 7: 303 (nest, prey, male behavior in nest). 

 — Peckham and Peckham, 1898. Wis. Geol. Nat. Hist. Survey, Bui. 2: 77-87 (nest, prey, 

 male behavior in nest). — Rau, 1926. Acad. Sci. St. Louis, Trans. 25: 199 (nest). — Rau, 

 1928. Acad. Sci. St. Louis, Trans. 25: 423 (nest, prey). — Krombein, 1956. Ent. Soc. Wash., 

 Proc. 58: 155-156 (nest, prey). — Balduf, 1961. Brooklyn Ent. Soc, Bui. 56: 82-83 (nest). 

 — Krombein, 1967. Trap-nesting wasps and bees, pp. 214-222, text fig. 2e, figs. 53-56, 132, 

 134, 135 (nest, prey, life cycle, egg, cocoon, parasites, predator). — Medler, 1967. Amer. 

 Midland Nat. 78: 344-358 (nest, prey, cocoon, parasites, life cycle). 



Species Group Nitidum 



Members of this group prey entirely upon snare-building spiders. 



collinum collinum (Smith). Ga., Fla. Ecology: Nests in cavities in twigs and in trap nests, 

 stores 13-25 spiders per cell. Parasite: Anthrax a. argyropygus Wied.; Phoridae sp.; 

 Trichrysis carinata (Say). Prey: Thendion flavonotatum Beck., T. glaucescens Beck.; 

 Eustala anastera (Walck.), E. triflex (Walck.), Acacesia folifera (Marx), A. hamata 

 (Hentz), Neoscona minima Camb., A^. spp., Araneus juniperi (Em.), Conaranea 

 floridensis Bks., C. sp., Neosconella pegnia (Walck.), Araneidae spp. Predator: 

 Crematogaster sp. 

 Trypoxylon collinum Smith, 1856. Cat. Hym. Brit. Mus., v. 4, p. 381. 9 . 



Taxonomy: Evans, 1959. Amer. Ent. Soc, Trans. 85: 160 (larva). 



Biology: Krombein, 1964. Amer. Mus. Novitates 2201: 18 (nest). —Krombein, 1967. 

 Trap-nesting wasps and bees, pp. 185-187 (nest, prey, life cycle, cocoon, parasites, 

 predator). -Krombein, 1970. Smithsn. Contrib. Zool. 46: 22-26, figs 62-78 (nesting 

 behavior, prey, life cycle). 

 collinum rubrocinctum (Packard). Que. to Ga., west to Minn., Kans., Nev. Ecology: Nests in 

 cavities in twigs, trap nests, abandoned beetle borings, hollow straws, and in crevices in 

 mortar; stores 5-27 spiders per cell. Parasite: Anthrax a. argyropygus Wied., A. 

 aterrimus (Big.); Megaselia sp.; Miltogramminae sp.; Sphaeropthalma pensylvanica 

 scaeva (BL); Trichrysis carinata (Say), T. doriae (Grib.), Chrysis pellucidula Aar., C. 

 sp.; Messatopoi-us compressicomis Cush. Prey: Conopistha sp., Theridula opulenta 

 (Walck.), Theridion lyricum Walck., T. murarium Em., T. spirale Em., T. flavonotatum 

 Beck., T. lyra Hentz, T. alabamense Gertsch and Archer, T. albidum (Bks.), T. differens 

 (Em.), T. spp., Argyrodes sp., Theridiidae spp.; Eustala anastera (Walck.), E. emertoni 

 Bks., E. spp., Cyclosa conica (Pall.), Neoscona arabesca (Walck.), N. spp., Ara^ieus 

 attestor Petrunk., A. juniperi (Em.), A. trifolium (Hentz), A. spp., Argiope aurantia 



