Mayfly Species Leucrocuta walshi

Mesonotum deep black-brown; tergites 1-6 pale, posterior margins dark; costal cross veins and some below bulla margined; genitalia of maculipennis (now a synonym of Leucrocuta maculipennis) type.

Head deep brownish, a pale yellow transverse band in the region of the antennae. Thorax deep blackish brown dorsally; slightly paler shading in region of scutellum. Pleura largely dark, sternum light yellowish. Legs light yellow; all femora with a fine dark streak apically; fore tibia brown at tip; fore tarsi slightly smoky, the basal joint about 1/4 the length of the second. Wings hyaline; a faint milky tinge along the costa of the fore wing and in the basal half; veins and cross veins blackish. Basal costal cross veins, also those of subcosta in same region, and those below the bulla, margined broadly with black; some cross veins near apex of wing are also thickened; a slight tinge in the fork of the posterior branch of radial sector.

Abdominal segments 1-6 pale hyaline slightly tinged with smoky, the tergites with narrow dark brown posterior margins. Segments 7-10 opaque; tergites deep brown, sternites light ochreous. Forceps and tails pale.

This species may be separated from the allied H. juno (now a synonym of Leucrocuta juno) by the deep brown thorax and slight smoky tinge on basal abdominal segments. The dark posterior margins of tergites 1-6 distinguish it from H. maculipennis (now a synonym of Leucrocuta maculipennis).