THE INSECTS OF NEW JERSEY. 



587 



Fig. 238. Willow saw-fly, Cimbex amcricana: a, willow leaf showing egg blisters; b, twig 



with girdlings; c, egg, enlarged; d, newly hatched larva, enlarged; e, larvse; 



f, cocoon; g, same cut open to show pupa; h, pupa; ', male 



adult; j, k, ovipositor and its tip, enlarged. 



CIMBEX Oliv. 



C. americana Leach. Throughout the State, the larva common enough 

 on willow, less so on elm, poplar and linden. The adult is rarely seen 

 and the species has several varieties "laportei" Lep., "nortoni" 

 MacG., "luctifera" Kirby, and "10-maculata" Nort, most of which 

 probably occur in the State. 



