147 

 Smith and Pritchard: Odonata 



I 



1 

 _ 



2, 



3, 



Fig. 4:80. Coenogr/on resolutum, lateral view of male 

 abdominal appendages (Celeste Green). 



Key to California Species 



Males 



Superior appendage forked distally and the fork filled 



by a large, pale nodule (fig. 4:84c,/) 2 



Superior appendage without a large, pale nodule filling 



a distal fork (fig. 4:84a, b, d,e) 3 



Superior appendage with fork shallow and the branches 

 even (Canada and northern U.S., south to Colorado and 

 Baja California) (fig. 4:84/) . . carunculatum Morse 1895 

 Superior appendage with the upper branch of the fork 

 larger and longer than the lower branch (Canada and 

 U.S., south to Colombia and West Indies) (fig. 4:84c) 



civile (Hagen) 1861 



Superior appendage declivate or short and globular, 



Fig. 4:81. Coenogr/on resolutum, naiad, a, lateral view; fa, 

 detail of caudal gill; c, lateral fold of abdomen showing the 

 spinulose edge; d, dorsal view; e, labium (Kennedy, 1915). 



Fig. 4:82. Caudal gills of naiads, o, Amphiagrion saucium; 

 fa, Nehallenia irene; c, N. gracilis; d, Ischnura cervula; e, /. 

 damula; f, I. vertical is; g, I. posita; h, Coenagrion angulatum; 

 i, C. resolutum; j, Anoma/agr/on hasfafum (Walker, 1953). 



shorter than the ventral appendage (fig. 4 :84a, 6, e) . . 4 



— Superior appendage with a slender dorsal branch and a 

 ventral projection, as long as or longer than the ventral 

 appendage (figs. 4:84d; 4:85) 6 



4. Superior appendage (as seen laterally) subglobular, 

 with tip broadly rounded (Alaska, Canada, and northern 

 U.S., south to New Mexico and California) (fig. 4:84s) 



boreale (Selys) 1875 



— Superior appendage declivate with narrow distal end 

 (as seen laterally) 5 



5. Superior appendage with tip turned up (Holarctic: 

 Alaska, Canada, U.S.) (fig. 4:846) 



cyathigerum (Charpentier) 1840 



— Superior appendage with tip directed caudad (Great 

 Basin: western Canada and U.S., south to Kansas and 

 eastern California) (fig. 4:84a) . . . clausum Morse 1895 



6. Superior appendage with tip of lower branch directed 

 caudad and without a tubercle (southern U.S. from 

 Louisiana to Utah and California, south to Guatemala) 

 (fig. 4:84a 1 ) praevarum (Hagen) 1861 



— Superior appendage with tip of lower branch directed 

 ventrad and bearing a large caudally directed tubercle 

 (western U.S., Wyoming and Utah to California) (fig. 

 4:85) anna Williamson 1900 



Fema les 



1. Prothorax with hind margin convex throughout 2 



— Prothorax with hind margin concave medially, slightly 



concave or truncate on either side 



praevarum and anna 



