Erynnis icelus genitalia

Side views of: 30. upper organ; 31. left clasp; 32. right clasp. Image from: Scudder, Samuel Hubbard 1888-89. The butterflies of the Eastern United States and Canada with special reference to New England. Cambridge, Author. 1: xxvi + 766 pp., frontisp.; 2: xii +767-1774, frontisp., figs.; 3: viii + 1775-1958, frontisp., pls. 1-89, 3 maps. [published in 12 parts from November 1888 to October 1889]; pl. 36 f. 30-32

Erynnis icelus genitalia

Image from: Lindsey, Arthur Ward, Ernest Layton Bell and Roswell Carter Williams, Jr. 1931. The Hesperioidea of North America. Denison University Bulletin 26: 1-142, pls. 1-33 (April); pl. 14 f. 01

Erynnis icelus genitalia

Drawing published in: Scott, James A. 1986. Butterflies of North America, a natural history and field guide. Stanford; Stanford University Press: xv + 583 pp., 64 pls., 71 figs. 2 tbls., maps. {[26 Sep]}; f. 71 #646