THE NATIONAL GEOGRAPHIC :MAGAZINE 



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 ) National Geographic Society 





Painting by Hashime Murayama 



"SQUATTERS" OFTEN CLAIM ABANDONED HOMES OF MUD DAUBER WASPS 

 Under stones and in attics you will find these nests of the yellow-legged Mud Daubers {Scelipliron 

 caementarium) , upper and center left. On the bottom of one nest, is a Blue Burglar ( C/ia/ybion cyaneitm) , 

 Plate lY, fig. 15. Green Cuckoo Wasps (^Trichrysis parvula) lay eggs in the Daubers' cells. Small 

 tenant wasps {Trypoxylon clavatum), lower left, and Ancistrsccnis uncinatus, right center, partition 

 original Dauber cases, while Pseudagenia adjuncta (upper right) build new cells inside the old. Other 

 squatters like the little Osmia cordata (lower right) also convert Daubers' cells into apartment houses. 



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