. Bulletin. Natural history; Natural history. 182 Illinois Natural History Survey Bulletin Vol. 26, Art. 1. LUCIOIPENNIS Fig. idi.—Ueptagcnia persimplex, male geni- Fig. 369.—Heptagenia cruentata, male geni- talia, talia. Fig. 364.—Heptagenia diabasia, male genitalia. Fig. 370.—Heptagenia rusticalis, male geni- Fig. 365.—Heptagenia pulla, male genitalia. talia. Fig. 366.—Heptagenia marginalis, male geni- Fig. 371.—Heptagenia inconspicua, male gen- talia. italia. Fig. 367.—Heptagenia patoka, male genitalia. Fig. 372.—Heptagenia lucidipennis, male gen- Fig. 368.—Heptagenia flavescens, male geni-
. Bulletin. Natural history; Natural history. 182 Illinois Natural History Survey Bulletin Vol. 26, Art. 1. LUCIOIPENNIS Fig. idi.—Ueptagcnia persimplex, male geni- Fig. 369.—Heptagenia cruentata, male geni- talia, talia. Fig. 364.—Heptagenia diabasia, male genitalia. Fig. 370.—Heptagenia rusticalis, male geni- Fig. 365.—Heptagenia pulla, male genitalia. talia. Fig. 366.—Heptagenia marginalis, male geni- Fig. 371.—Heptagenia inconspicua, male gen- talia. italia. Fig. 367.—Heptagenia patoka, male genitalia. Fig. 372.—Heptagenia lucidipennis, male gen- Fig. 368.—Heptagenia flavescens, male geni- italia. talia. Fjg. 373.—Heptagenia perfida, male genitalia. Fig. 374.—Heptagenia umhratica, male Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Illinois. Natural History Survey Division. Urbana, State of Illinois, Dept. of Registration and Education, Natural History Survey Division
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