93 

 Day: Ephemeroptera 



? 



Fig. 3:14. Male genitalia, a, Ameletus validus; b, Paraleptophlebia zayante; c, P. c/ora; d, P. 

 he/ena; e, P. qui squil la; i, P. placeri; g, P. associata; h, P. californica; i, P. gregalis (a-e, g-i, 

 Day, 1952, 1954; f, Mayo, 1939). 



! — Apical notch between penes very shallow, semicircular; 

 reflex spurs much longer than depth of apical notch; 

 these spurs very wide at base, sometimes sinuate, 

 tapering to a blunt point (fig. 3:14c); central California 

 coastal clara (McDunnough) 1924 



ilO. Medium size species, 7J4 to 9 mm. in length; apical 



notch between penes relatively narrow and deep, nearly 



^closed at the top; reflex spurs strongly tapering, curved 



evenly outward to point (fig. 3:14t); sternites 2-7 with 



paler anterior margins; coastal... gregalis (Eaton) 1884 

 Small species, 6 to Gy 2 mm. in length; apical notch 

 between penes almost round, all but closed at top; 

 reflex spurs straight on inner margins and sinuate on 

 outer margins, tapering to sharp point directed down- 

 ward (fig. 3:14e); sternites 1-7 with oblique submedian 

 hyaline dashes and 2 hyaline dots on each; Lake 

 County quisquilia Day 1952 



