Packard.] 



IXSECTS AS MIMICS. 



293 



remind us of geometiid moths, and they fly by day associated 

 with them. 



The wingless flics nearl}' always show a tendency to re- 

 semble spiders, from the wingless gnat-like Chionca (Fig. 

 229 a) down to the sheep tick, the bat tick (Fig. 229 c), 

 and the bee louse (Fig. 229 h). I do not regard these, 

 however, as cases of protective mimicry, but interesting 



Fig. 229. 



Chionea. 



Bat tick. 



Bee louse. 



analogies resulting from the loss of wings and other dcgra- 

 dational characters induced by their usually parasitic mode 

 of life. 



A singular case of mimicry may be ol)served in the moth 

 Lycomorpha, so named l)y Dr. Harris from its resemblance 

 when at rest to Lycus, which possesses broad wing-covers 

 (elytra). The fore wings of the moth are shaped like the 

 elytra of the beetle, the veins being mucli raised, like the 

 ridges on the beetle's wings, while the arrangement of 

 the colors is almost identical, and the antenna} of the moth 

 are broad and flattened like those of the beetle. 



The burrows of the mole cricket arc, in North Carolina, 

 as I have been informed by Mr. Slnite, tenanted by a large 

 bug, which has fore feet somewhat like those of the mole 



5 



