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Show 130 Callibaetis nigritus Banks (Figure 43) Callibaetis nigritus Banks, (= claudiae Edmunds, (1918) Banks collected tion of and .. described in Colorado. this Traver species from specimens (1935b) provides the male imagos, and Edmunds nymphs. The records of Traver (1935b), placed as of 1918:12; Edmunds, 1954b:65 1945, nudum) dubium, S nleari tus and Taxonomy This Banks but abdominal species in the the adults and believed are (1957) Allen to be based have on specimens • Biology is species the male color are of Q. hageni Eaton reported by species Edmunds a (1952b) descrip a closely imagos pattern. related to can usually be The females and coloradensis Q. distinguished by nymphs of the two distinguishable only by ecological characters (Also keys. see discussion in Taxonomy and warmer ponds Biology used of Q. coloradensis.) of Nymphs flowing are found most over elevations commonly swarm cleared spaces and but with usually several low they emerged. the in occur greatest inches vegetation They swarm 4,500 below silted bottoms on adults from which hours at species The tation. tat rivers this and to near swarm and feet. slow They submerged vege several the feet aquatic habi during daylight intensity in the afternoon. |
