THE SPIDER-HUNTERS 



genus, although they do not make their own nests, still 

 exercise some foresight in the matter by selecting a 

 suitable crevice before catching their prey. Among the 

 species that we have studied, quinquenotatus, biguttatus, 



TORNADO WASP (POMPILUS QUINQUENOTATUS) DIGGING NEST 



fuscipennis, marginatus, and interruptus first catch the 

 spider and then make the nest; while calipterus and 

 scelestus prepare the nest before capturing their prey. 

 Quinquenotatus is usually rather less than half an 

 inch in length and is black, the abdomen having a 

 variable number of white bands and a white tip. 

 197 



