1969] 
Davis and Russell — Commensalism 
263 
B 
Fig. 1. A. Outer valvula of Lygus lineolaris ovipositor used to place eggs 
in plant tissue; B. Ovipositor of R. moerens; C. Hind tarsal claw of R. 
mocrens showing ridged area and hooked versus extended position. 
