INTERDUNAL PONDS AND TAMARACK SWAMPS 185 



Fig. 210. — Nymph and adult of 

 dragon fly, Leucorhinia intacta. 

 After Shelf ord. 



black, unspotted or nearly so. It is our commonest bullhead. 

 The mud minnow (Fig. 190) is also present. Many damsel- and 

 dragon-fly nymphs are present in the marginal zone, and the 

 adults are found hovering over the 

 sedges and grasses. Those of Lihel- 

 lula pulchella, Gomphus spicatus (Fig. 

 189), Leucorhini intacta, and Anax 

 jiinms occur in the rush and cat- 

 tail area. 



The nymph of Anax (Fig. 209) K 

 has very large eyes that occupy two- 

 thirds of the side margin of the head. 

 The adult dragon fly appears early 

 in spring, and flies late (late March 

 to mid-October). 



The eyes of the adult are very 

 large also, meeting dorsally for some 

 distance. The insect is good sized, 

 the abdomen some 2 inches long. The color is green, marked 

 with brown and blue (male). The front of the face bears a dark 



spot surrounded by 

 yellow that in turn 

 is encircled with a 

 blue ring. 



The nymph of 

 L. intacta (Fig. 210) 

 is mud-colored, flat, 

 and the abdomen 

 terminates abruptly. 

 This is a small spe- 

 cies, the adult hav- 

 ing a wing-spread of about 2 inches. The body is black. The 

 upper part of the face is ivory white, obscured with yellow in 

 the female. It is commonly known as the white-faced dragon 

 fly. It fhes in May and June. 



Fig. 211. 

 Needham. 



-Dragon fly, Lihellula pulchella. After 



