TWO NEW SPECIES OF EMELINUS FROM ARIZONA 
(COLEOPTERA: ADERIDAE) 1 
By Floyd G. Werner 
University of Arizona, Tucson, Arizona 
The two species of Emelinus described here bring the 
known species in our fauna to four. Others assignable to 
the genus have been described from Central and South 
America but, so far, none from the Old World. Since the 
last general work on Nearctic species of Aderidae, by 
Casey in 1895, 2 there has been only one significant publica- 
tion affecting our fauna, a reclassification on a World basis 
by Baguena Corella in 1948. 3 Whereas neither Pic nor 
Champion felt that the genera set up by Casey could have 
more than subgeneric or species-group significance, Ba- 
guena Corella has made an effort to split up the huge 
and diversified assemblage of species already assigned to 
Xylophilus or Hylophilus, raising Emelinus not only back 
to generic rank but setting it off in a separate tribe, 
Emelinini. Baguena Corella also shows good reason for 
using the family name Aderidae, thus ending a triple tie 
for the names Euglenidae, Xylophilidae and Hylophilidae. 
Baguena Corella’s definition of Emelinus restricts it 
to species with the head totally visible from above and 
with the male antennae flabellate from the fourth seg- 
ment. The two new species fit this diagnosis but differ in 
some details possibly of generic significance from E. mel- 
sheimeri (Lee.) and E. ashmeadi Csy. In these the anten- 
nae angle beyond the third segment in the male and the 
rami of segments six through ten originate near the 
apex of the segments. The two species from Arizona do 
Published with a grant from the Museum of Comparative Zoology at- 
Harvard College. 
2 Ann. N. Y. Acad. Sci. 5:772-809. 
3 “Estudio sobre los Aderidae,” Instituto de Estudios Africanos, Madrid. 
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