128 
Psyche 
[December 
eyes are less than the width of an eye apart. It is common 
in southern localities where the typical scalaris is not 
found. The last joint of the clasper is shorter and broader 
than in scalaris. 
H. incommoda Hagen from Georgia is also put as a 
synonym by Milne. The superior plate is more nearly 
Fig 1 . 1. Male genitalia of Hydropsyche. 1, H. separata, clasper 
and p'enis; 2, H. reciproca, clasper and penis, and superior plate; 3, 
H. incommoda, clasper; 4, H. scalaris, clasper; 5, H. separata, 
superior plate; 6, H. depravata, superior plate; 7, H. scalaris, 
superior plate, penis below and above; 8, H. incommoda, superior 
plate, penis, two specimens; 9, H. phalerata, superior plate, penis; 10, 
H. hageni, clasper, apical joint. 
conical, with only a short incision, the apical joint of the 
clasper has the hook less distinct. The eyes of male are 
wide apart, further apart than in H. scalaris. It occurs 
also in Louisiana. 
