Mayfly Species Neocloeon alamance

Abdominal tergites 2-6 of male imago semi-hyaline, pale yellowish white marked with brown.

Head reddish brown. Turbinate eyes large, bright orange, somewhat egg-shaped. Pronotum olive brown; mesonotum bright red-brown, metanotum darker red-brown. A yellow line anterior to the wing root, and a yellowish brown area on mesonotum on each side of median sclerite. Pleura yellowish to olive brown; sternum red-brown shading into olive brown posteriorly. Legs whitish. Wings hyaline, venation pale. A very faint whitish cloud in the stigmatic area of the fore wing. 6-8 cross veins, aslant, usually complete; few or no granulations between them.

Abdominal tergites 2-6 semi-hyaline, faintly yellowish, marked and faintly washed with brownish. Posterior margin pale brown; an extension of this band forms triangular brown patches in the postero-lateral angles. A longitudinal submedian stripe, pale brown in color, margins the mid-dorsal line the length of each tergite, widening posteriorly. Between these stripes and nearer the mid-dorsal line are two short darker bars parallel to one another, from the anterior margin of about the first third of each tergite. Sternites 2-6 hyaline, pale yellowish white. Spiracular area marked with a broken brown line. Segments 7-10 semi-opaque; tergites olive to reddish brown, becoming darker posteriorly; sternites somewhat paler in color, 9 margined anteriorly and laterally with dark red-brown. Forceps and tails whitish. Genitalia reminiscent of C. conturbatum (now a synonym of Anafroptilum conturbatum); second forceps joint wider than long, its inner margin prolonged inward in a somewhat ax-blade-shaped extension; third forceps joint with a slight swelling near the base on the inner margin, a more pronounced swelling apically, somewhat bowed in the middle; distal joint 2 1/2 to 3 times as long as wide. Between the bases of the forceps is a conical penis-cover (see fig. 167).