. Bulletin. Natural history; Natural history. 72. August 1985 Crayfishes and Shrimps of Illinois 355 12. Terminal ek-ments of gonopod nearly parallel (Fig. 72 & 73) .'. 14 u // 13. Terminal elements of gonopod curved (Fig. 69) Orconectes kentuckiensis (p. 396) 13. Terminal elements of gonopod nearly straight (Fig. 70) Orconectes indlauensis (p. 394) 14. Rostrum with median carina (Fig. 71) 15 14. Rostrum without median carina Orco- nectes illinoiensis (p. 386) Fig. 71 15. Mesial process of gonopod with spur on caudal surface (Fig. 72) Orconectes stannardi (p. 415) 15. Mesial process of gon
. Bulletin. Natural history; Natural history. 72. August 1985 Crayfishes and Shrimps of Illinois 355 12. Terminal ek-ments of gonopod nearly parallel (Fig. 72 & 73) .'. 14 u // 13. Terminal elements of gonopod curved (Fig. 69) Orconectes kentuckiensis (p. 396) 13. Terminal elements of gonopod nearly straight (Fig. 70) Orconectes indlauensis (p. 394) 14. Rostrum with median carina (Fig. 71) 15 14. Rostrum without median carina Orco- nectes illinoiensis (p. 386) Fig. 71 15. Mesial process of gonopod with spur on caudal surface (Fig. 72) Orconectes stannardi (p. 415) 15. Mesial process of gonopod without spur (Fig. 73) Orconectes propinquus (p. 406) M p| 73 16. Both elements of gonopod curved (Fig. 74); areola distinctly narrows anteriorly (Fig. 75); no black bands on fingers of chela Orco- nectes I'irilis (p. 417) Fig. 74. 16. Mesial process of gonopod not curved; areola remains fairly wide throughout; black, band (fades in preservative) near tips of fingers of chela 17 Fig. Fig. 76. 17. Dorsal (cephalic when lifted from body) surface of gonopod with prominent shoulder (Fig. 76) Orconectes rusticus (p. 412) 17. Dorsal surface of gonopod without prominent shoulder (Fig. 77) Orconectes placidus (p. 404) 18. Dorsal surface of gonopod with prominent shoulder (Fig. 78); cephalic process a large lobe (Fig. 78) Procambarus clarkii (p. 381) 18. Dorsal surface of gonopod without shoulder; cephalic process small 19 Fig. 78. Fig. 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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Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectnaturalhistory
