192 
Psyche 
[Vol. 87 
Holotype male: Arizona: Cochise Stronghold, Dragoon Mts., 
R. J. Shaw, blacklight trap; Paratypes: Cochise Stronghold, 1 
male, IX-11-15-1969; 1 male, VI-27-29-1970; 1 male, VII-24-27-1970; 
Mexico; oaxaca; 0.5 mi. S. of Llano Verde, 1 male, III-21-1976, V. 
Johnson. Deposited in USNM and the collection of the author. 
Notes: This species belongs to the S. vicina group. Genitalically, 
S. tricornis is similar to S. arnaudi Meinander, but differs in the shape 
of the parameres. The terminal spine is longer in S. tricornis and the 
dorsal incision is much deeper and narrower. In addition, the central 
spine of S. tricornis is directed dorsally rather than forwards and is 
closer to the caudal end. 
The Mexican specimen is much larger than the Arizona specimens. 
The Arizona specimens have wing spans of 3.0-3.2 mm fore wing, 
2.4-2.6 mm hind wing, and have 29-30 antennal segments (the 
holotype has right antennae with 29 segments and left with 30); the 
Mexican specimen has wing span of 4.5 mm fore wing, 3.8 mm hind 
wing and has 33 antennal segments. 
Reference Cited 
Meinander, M. 
1972 A revision of the family Coniopterygidae (Planipennia). Acta Zool. 
Fennica 136 : 1-357. 
