1014 Sphecidae 



Pemphredon Latreille 



(The members of this genus build chiefly in decaying wood, provisioning their 

 nests with aphids.) 



(Subgenus DiPHLEBUS Westwood) 



P. bipartior Fox. LI: Sea Cliff, Aug-Sep (Bks). 



P. inornatus (Say). L. Placid, Je, Elm L., Aug (NYS) ; Ithaca, Jl 2-Aug 4 (Bdy- 

 CU); Mud Cr., Je 17-20, MacG (Bdv-CV) ; Norton's Landing, Cayuga L., 

 May 29-Je 3, SmHH (Cress-CU) ; Albany, Je, Dobbs Ferry, Je, Yg (NYS) ; 

 Rensselaer, Jl, Yg (NYS) ; LI: Flatbush, Zab (AM) ; Sea Chff (Bks). 



P. tenax Fox. Ithaca, May 30-Jl 25 (Bdy-CU) ; Mud Cr., Je 17-20, Slaterville to 

 Caroline, Je 14, Dryden L., Je 16, MacG (Bdy-CU) ; McLean, Sep 20, Sib 

 (Bdy-CU); Bear Mt., Je 2, Schoft (Roh) ; LI: Sea CHff (Bks); Flatbush 

 (AM). The nests of this species have been observed by the Raus in elder 

 stems, provisioned with an aphid, Macrosiphnm rudbeckiae (Fitch). 



(Subgenus PEMPHREDON Latreille) 



P. angularis Fox. LI: Sea Cliff, Je (Bks). 



P. concolor Prov. Big Moose, Aug, Speculator, May, Yg (NYS) ; Newport, Jl, 



Yg (NYS) ; Ithaca, Aug, Yg (NYS) ; Albanv, Sep, Yg, Lint (NYS) ; 



Karner, May, Yg (NYS); Inwood, Schott (Beq); SI, May 30, Ds (Ashm). 



PasSALOECUS Shuckard 



(These wasps prefer rotten wood for their nesting site, or utilize the galleries 

 of wood-boring insects, or hollow stems of plants, building clay cells within the cavity. 

 They provision their nests with aphids.) 



P. annulatus (Say). Ithaca, Jl 10. (Bdy-CU) ; Mud Cr., Je 17-20, MacG {Bdy- 

 CU) ; LI: Sea CHff, Jl (Bks). 



P. distinctus Fox. Ithaca, Je 28 (Bdy-CU). 



P. mandibularis Cress. L. Placid, Je, Yg (NYS); Ithaca, Je 5-27 (Bdy-CU); 

 Albany, Je, Yg (NYS); West Farms, Angus (AM); LI: Sea CHff (Bks). 



SUBFAMILY BEMBECINAE 

 Tribe NYSSONINI 

 Alyson Jurine ^^e 



A. conicus Prov. Wilmington, 1000-2200 ft., Aug 20-25 (Bdy-CU) ; Lancaster, 

 Aug 15, MCV (Bks) ; Middletown, Jl 2-20, SpoonerCS (Bdy-CU) ; Rhine- 

 beck, Jl 27, Cy (Bdy) ; Van Cort. Pk., Jl 20 (Bdy-CU). 



A. guignardi Prov. Mud Cr., Je 17-20, MacG (Bdy-CU) ; McLean, Jl 2-3 (Bdy- 

 CU) ; Ithaca, Jl 31 (Bdy-CU); SI (Beq). 



A. melleus Say. Ithaca, Aug 10-31 (Bdy-CU); LI: Wading R., Je 27, Schott 

 (Rohwer). An essentially southern species. Builds, according to the Raus, 

 always in a cool damp bank of mud or sandy clay near a body of water, but 

 at least the surface of the sand may be hot and dry. Provisions its nest 

 with leaf hoppers. 



^"^ If the Erlangen List is accepted, this name will have to be spelled "Alysson." 



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