Mayfly Species Anthopotamus myops (Golden Drakes)

Head fuscous, remainder of body pale; tail joinings faintly darker; wings wholly pale.

Head fuscous to purplish brown. Eyes of male small. Thorax pale yellowish; median reddish streak on pronotum, also on anterior portion of mesonotum of one specimen. Legs yellowish white. For tibia infuscated at tip, also tarsal joinings. All joints of fore tarsus faintly smoky. Fore femur with faint reddish tinge. Wings hyaline, whitish, “with pinkish iridescence” (Needham); all veins wholly pale. Abdomen translucent, yellowish white; apical tergites “of a dull satiny whiteness” (Ndm.). Very faint opaque brownish areas on each tergite in same position as distinct dark Iateral spots on some species of this genus. Tails white, joinings very faintly darker.

Described as P. myops

Body length 12-13 mm Wing length 12.5-13 mm

Eyes of male small; wings wholly pale, in both sexes; abdominal segments 1-5 ferruginous, but no lateral markings.

Walsh's description is largely a comparison with P. flaveola (now a synonym of Anthropotamus verticis), in which he states the size of male (did not have female); eyes “separated by a space 2.5 times their own diameter”; no lateral fuscous markings on abdomen, but one of his two specimens had abdominal segments 1-5 ferruginous, “6 and 9 paler, 7 and 8 yellowish”; the entire abdomen of the other specimen was yellowish. Dr. McDunnough states that the wings of the female have no black cross veins; the comparison with flaveola(now a synonym of Anthropotamus verticis), by Walsh, would indicate wholly pale wings in male also. One would expect, further, that the vertex would be ferruginous; thorax pale ferruginous; legs yellowish, apical portion of fore femur reddish, tips of tibia and tarsal joinings fuscous; abdomen yellowish; tails whitish, joinings fuscous.

Described as P. rufus

Body length 15 mm Wing length 13.5-14 mm

Vertex and thorax reddish; fuscous spots on sides of abdominal tergites; tail joinings reddish; wings wholly pale, in both sexes.

Eyes of male small, separated by a space equal to 2.5 diameters of eye; eyes of female small, separated by at least three eye diameters. Vertex of head, and antennae, reddish; thorax likewise ferruginous. Fore femur and tibia “strongly ferruginous” at tips; tarsal joinings fuscous. Wings wholly pale, without darker cross veins, in both sexes. Abdomen yellowish, with “fuscous spots on sides of segments.” Tails with joinings “strongly ferruginous” in both sexes. Fore femur and tibia of female reddish throughout their lengths. Female said to be “more strongly ferruginous” than male.

Vertex and prothorax with broad median stripe; tails joinings brownish; only female is known. Head and thorax pale yellowish; a “broad median reddish stripe on prothorax and vertex of head, and less distinctly on mesothorax; the part on head is broader then elsewhere, and on the face it is broadened to reach the eyes, or nearly so” (Banks). Eyes of female “scarcely if any more than two diameters apart.” Fore femur and tibia slightly infuscated at apex. Tails narrowly brownish at joinings; median tail “rather smaller than the others.”