Mayfly Species Susperatus prudens (Angler's Curses)

Mesonotum bright brown; fore femur pale smoky; abdomen wholly pale yellowish white.

Eyes black; antennae pale; head lightly suffused with pale brownish. Pronotum pale yellowish white, the median area tinged faintly with smoky posteriorly. Mesonotum rather bright brown, the median area with slight sepia shading; lateral and posterior portions paler. Metanotum light brown. Pleura pale, the episternal area brown-tinged. Coxae and femora of fore legs pale smoky; tibiae and tarsi whitish. Middle and hind legs wholly whitish. Wings semi-hyaline whitish, subcosta and radius dark except at the tip. Abdomen entirely pale yellowish white. Forceps faintly tinged with smoky, tails white. Forceps shorter than in B. idei (now a synonym of Sparbarus lacustris) or B. flavus (now a synonym Sparbarus flavus) (see fig. 160).

This species is closely allied to B. flavus, from which it may be separated by the bright brown mesonotum, the shorter forceps, and the lack of a dark mid-dorsal streak on the apical abdominal tergites. It is smaller than either B. nitidus or B. idei; tergites paler than in the former, and lacking the black posterior margins of the latter species.