Packard.] 
INSECTS AS MIMICS. 
293 
remind us of geometrid moths, and they fly by dav associated 
with them. 
The wingless flies nearly always show a tendency to re¬ 
semble spiders, from the wingless gnat-like Chionea (Fig. 
229 <x) down to the sheep tick, the bat tick (Fig. 229 c), 
and the bee louse (Fig. 229 b). I do not regard these, 
however, as cases of protective mimicry, but interesting 
a 
Fig. 229. 
c 
Chionea. 
Bat tick. 
Bee louse. 
analogies resulting from the loss of wings and other degra- 
dational characters induced by their usually parasitic mode 
of life. 
A singular case of mimicry may be observed in the moth 
Lycomorpha, so named by 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 much raised, like the 
ridges on the beetle’s wings, while the arrangement of 
the colors is almost identical, and the antennae of the moth 
are broad and flattened like those of the beetle. 
The burrows of the mole cricket are, in North Carolina, 
as I have been informed by Mr. Shute, tenanted by a large 
bug, which has fore feet somewhat like those of the mole 
5 
