Megachilidae 1029 



COELIOXYS Latreille 

 (These bees are social parasites in the nests of Megachile.) 



C. dubitata Sm. Ithaca, Jl-Aug, Comstock (Rich-CU) ; Taughannock, Jl (Rich- 



CU). 

 C. modesta Sm. Ithaca, Jl (Rich-CU). 



C. octodentata Say. Ithaca, Aug (Rich-CU) ; SI, Jl 30, Ds (Ashm). On mountain 



mint and goldenrod. 



DiANTHIDIUM Cockerell 

 (These bees cement fragments together with resin to form their nests.) 



D. jugatorium (Say). Ithaca, Jl-Aug (Rich-CU). 



D. notatum (Latr.). LI: Huntington, Aug 19, Schott (Roh). 



Heriades Spinola 

 H. carinatus Cress. Ithaca, Je-Jl (Rich-CU) ; Spring Lake. Jl (Rich-CU). 



Megachile Latreille : Leaf-Cutter Bees 



(Subgenus MEGACHILE Latreille) 



M. brevis Say. Ithaca, Je-Aug (Rich-CU) ; SI, Ds (Ashm). On sunflower, 



goldenrod, and milkweed. 

 M. exilis Cress. Ithaca, Sep (Rich-CU). 

 M. generosa Cress. Ithaca, Jl-Aug (Rich-CU). 

 M. mendica Cress. Ithaca, Jl-Sep (Rich-CU). 



(Subgenus Anthemois Robertson) 



M. infragilis Cress. Ithaca, Je-Aug (Rich-CU).' On milkweed and burdock. 

 M. decipiens Lov. & Ckll. McLean, Aug 31, 1925, SRohinson (Roh-CU). 



(Subgenus XanthosARUS Robertson) 



M. latimana Say. Ithaca, Jl-Aug (Rich-CU) ; McLean, Jl 19 (Roh-CU) ; SI, 



Jl, Ds (Ashm). 

 M. melanophaea Sm. Ithaca, Je-Jl (Rich-CU). 



(Subgenus Cyphopyga Robertson) 

 M. montivaga Cress. Ithaca, McLean, Je-Aug (Rich-CU). 



(Subgenus Sayapis) 

 M. pugnata Say. Ithaca, Jl-Aug (Rich-CU). 



(Subgenus Delomegachile Viereck) 

 M. vidua Sm. "NY"? 



Monumetha Cresson 

 M. albifrons (Kby.). Ithaca (Rich-CU). 



