Mayfly Species Leucrocuta umbratica

Mesonotum brown; abdominal tergites 2-6 pale yellow, posterior margins black, with brown lateral patches; genitalia as in fig. 95.

Frontal portion of head light yellow; frontal shelf semi-hyaline with a blackish streak; vertex brown. Thoracic notum and pleura brown; sternum light yellow. Legs pale yellowish, with scattered black streaks at their bases; fore femur slightly deeper yellow, fore tibia and tarsus smoky; basal joint of fore tarsus about 1/5 of the second, which is slightly shorter than the third. Wings hyaline; longitudinal and cross veins in costal half of fore wing brownish, all other veins pale; 3 to 4 basal costal cross veins.

Abdominal segments 2-6 light yellow, semi-hyaline; tergites narrowly black on the posterior margins, and with brown triangular submedian lateral patches based on the posterior margin, the apex rather blunt and not quite reaching the anterior margin. Segments 7-10 opaque; tergites brown, with the dark lateral patches faintly indicated; sternites shaded with brown. Forceps creamy, tinged with brown basally. Tails whitish, unmarked. Penes distinctly reminiscent of the maculipennis (now a synonym for Leucrocuta maculipennis) group, although the lack of shading on the cross veins separates it from species of that group.