Mayfly Species Cinygmula reticulata (Western Ginger Quills)

Very similar to Cinygmula mimus, differing principally in the maculation of the wings. Head and thorax brown, the latter with the usual lighter brown shading in the region anterior to scutellum and with the pleura streaked with light ochreous; a faint ruddy patch anterior to base of forewing. Abdomen dorsally with the anterior half of segments II-VII hyaline, the posterior halt irregularly, purple-brown (deeper in color than in mimus), segments VIII-X opaque, largely purple-brown, with lighter brown shades along lateral edges, and also on posterior margin of X. Ventrally with much the same coloration, but considerably paler, genital plate light ochre-brown; traces of ganglionic marks. Forceps and setae light smoky. Legs pale brown, the femora with faint ruddy tinges. Wings entirely suffused with pale amber, veins and crossveins brown, the latter broadly but rather faintly bordered with pale smoky, giving a very characteristic checkered appearance to the entire wings, a feature not at all present in mimus. The male genitalia are so very similar to those of mimus that no definite character for separation can be given, unless it be that the stimuli are somewhat larger.

Female. Quite similar to male but crossveins on wings less distinctly bordered with smoky. Head rather light ochre-brown, slightly reticulate with smoky and with a darker shading posterior to the mid-ocellus.