1956] 
Werner — New Arizona Emelinus 
31 
not have the antennal angling and the rami all originate 
before or near the middle of the segments. Casey noted 
the angling in E. ashmeadi but it was not mentioned by 
Champion in the Central American species, nor does it 
appear in his figures. It seems most likely that the two 
Arizona species are more closely related to those described 
from Central America than they are to melsheimeri and 
ashmeadi, the two species from which a genotype must be 
selected. 
Both the species described below were collected by the 
author, in company with Dr. George D. Butler, Jr., in 
Bamsey Canyon, Huachuca Mts., huachucanus mostly below 
the “box” and butleri entirely about one-half mile above 
the “box.” The presence of both species was detected by 
random sweeping of vegetation alongside the path. In 
each case additional specimens were obtained by more 
intensive sweeping and examination where the first speci- 
mens were taken. All the butleri specimens came from an 
area less than twenty feet across and mostly from maple 
leaves. Almost all the huachucanus came from a similar 
area, from leaves of a broad-leaved oak. Since both trees 
are widely distributed in the canyon, it seems likely that 
the small areas of abundance were in some way tied in 
with emergence of the adults from a very restricted habitat. 
Undisturbed individuals of both species appeared simply 
to be resting on the upper surfaces of the leaves; there 
was no sign of feeding of any kind. 
Key to the Nearctic Species: Males 
1. Antennae angled backward at apex of segment ill; 
rami of antennal segments Vl-X arising near apex of 
segments, of such lengths that the rami and segment 
XI form an almost evenly rounded series across their 
ends. Elytra with a variegated pattern of darker 
markings . . 2. 
Antennae not angled at apex of segment ill; all rami 
arising before middle of segments, almost uniform in 
length, not making a rounded series across their 
ends 3. 
