Mayfly Species Paraleptophlebia sculleni

This is another brown and white, clear-winged species with black-ringed abdomen. Thorax brown above with paler sutural lines on the sides. Legs pale. Wings hyaline. Costal cross veins obsolete except in the creamy stigmatic area which covers costal and subcostal interspaces. Stigmatic cross veins few, simple, slightly curved.

Abdomen brown on segments 1 and 8 to 10; light brown on 2 and 7; white on 3 to 6, and on the base of 7, with blackish apical half-rings and lateral stripes that are darker at the postero-lateral angles of the segment. Ganglia and venter of segments 7 to 9 yellowish. The basal segment of the forceps tapers suddenly at the base, then very slightly to its tip. The penes are separated by an oval U-shaped notch, longest at the inner angle which projects rearward in a rounded lobe. Lateral to this lobe the apex is obliquely truncate, ending laterally in a minute recurved hook; the reflexed spurs are elongate, sickle-shaped and incurving at the tip (see fig. 133).