504 
Psyche 
[September-December 
able limits of variation in the shape of the aedeagus, with Agyrtes 
longulus. Since a number of beetles in eastern Canada have been 
introduced from Europe (Lindroth, 1957) there was the possibility 
that the Agyrtes of Casey might be a species introduced from Europe. 
It was compared with the European A. castaneus (F.) and the 
aedeagus drawings of Hlisnikovsky (1964) and was found to be 
distinctly different. 
Since Casey’s specimen is the only Agyrtes known from eastern 
North America, I think that an error was made in the labeling of 
Casey’s Agyrtes , and we may continue to believe that the genus 
Agyrtes and the species A. longulus occur only in the coastal and 
interior mountains of western North America. 
Agyrtes similis Fall 
Figures 3, 4, 5, 6, 7. 
Agyrtes similis Fall, 1937; 29. Holotype male in MCZ, Fall colln. (no. 
24015), seen. Type locality: Pasadena, California. 
Diagnosis. Antennal club composed of five segments, first four of 
club with rings of dense pubescense on inside apical margins, third 
antennal segment only a little longer than the second. Prothorax 
wider than long but more elongate and more gradually narrowed 
toward the front, posterior angles rounded. Aedeagus in side view 
relatively straight (fig. 7), paramere a rounded spatula (fig. 6). 
Figures 5-10. 5. A. similis aedeagus, dorsum, Pasadena, California. 
i. A. similis paramere, setae omitted. 7. A . similis aedeagus, lateral view. 
8. A. longulus aedeagus, dorsum, Mill Valley, Marin Co., California. 9. 
A. longulus paramere, setae omitted. 10. A . longulus aedeagus, lateral 
view. 
