1953] 
Werner — North American Epicanta 
107 
ly after dark, we found one plant in full bloom, with a 
swarm of ochrea on the blossoms, feeding on the petals and 
mating. We knocked down and captured several hundred 
specimens, losing at least twice that many in the process. 
They took flight readily. This night one ochrea came to 
our lighted sheet nearby, the only one I have ever seen at 
light. 
The series taken at this time should provide a fair sample 
of the species. In it are small and large specimens, as is 
usual in almost any large sample of Meloidae. All mixed 
together, and with numerous cross-matings, are entirely 
ferrugineous to very dark specimens in which the elytra 
are ferrugineous. I have noticed this variation in color 
several times in the field. 
Mr. Dillon has separated moniliformis on the basis of 
length of antennal scape, color, and width of body. Two 
eutopotypical specimens in the Chamberlain Collection are 
in the same size range as the two moniliformis types (9 and 
11 mm.). The smaller specimen, a female, is colored as in 
Dillon’s types; the larger, a male, is uniformly ferrugine- 
ous. The lengths of the antennal scapes compare with the 
moniliformis description, except that in the male the scape 
might be just perceptibly longer. 
The body form, color, and length of antennal scape can 
be matched in my series from the Patagonia Mts. In the 
same series are entirely ferrugineous specimens in coitu 
with dark, moniliformis-co\oYe& specimens. There seems to 
be a tendency for the antennal scape to be slightly shorter 
in the smaller specimens. In about a third of the specimens 
under 12 mm. long the scape of the male antenna just 
reaches the hind margin of the eye; in the rest it extends 
beyond slightly. The measurement is a difficult one to make 
accurately and it often varies with the position or amount 
of extension of the antennae. I can see no difference in 
width of body in this long series or in the rest of the speci- 
mens in my collection. Apparent difference can be traced 
to amount of shrinkage of dried specimens, chance overlap 
of the elytra or amount of distension of the abdomen. 
My Patagonia Mts. series shows a considerable size range, 
from 7 to 18 mm., with a mean length of about 14 mm. 
