Mayfly Species Baetisca carolina (Armored Mayflies)

Abdominal tergites of male imago light purplish brown, sternites light tan; fore wing in basal third, and hind wing entirely tinged with orange-brown; longitudinal veins brown.

Head and pronotum light tan, mesonotum paler, with a greenish tinge; scutellum tipped and margined with black; pleura light brown. Thoracic sternites yellowish tan, anterior portion of mesosternum brown. Legs greenish white; tips of claws and all joinings pale brown. Wings hyaline, somewhat iridescent. Basal third of fore wing, and all of the hind wing, tinged with orange-brown. Longitudinal veins brown; cross veins very faint, pale. Abdominal tergites 1-6 light purplish brown, darker anteriorly; sternites light tan. Tergites 7-10 brownish; sternites 8 and 9 light yellow, 6 and 7 brownish; pleural fold purplish brown. Brown lateral dots and transverse dashes on sternites 1-5. Forceps yellowish white, brown at tip; tails white, slightly brown at base, joinings in basal half light brown. Genitalia as in fig. 148.

The nymph (see fig. 61) lacks dorsal spines on the mesonotal shield, but short lateral spines are present; the genae are produced into upcurved spines; the frontal projection is wholly wanting. From Baetisca rubescens, which likewise has the wings flushed with a reddish color, this species may be separated by its larger size and pale whitish legs; also the wings are tinged with orange rather than reddish.