. Bulletin. Natural history; Natural history. May, 1953 Burks: The Mayflies of Illinois 145 era, the body is elongate and fishlike, but in Gills are borne by abdominal segments 1-7, Pseudiron, it is flattened dorsoventrally. but the structure of these gills varies greatly. Fig. 301.—Pseudiron centralis, hind leg of mature nymph. Fig. 302.—Siphloplectnn interlincatum, middle leg of mature nymph. Fig. 303.—Siphloplecton interlineatum, fore leg of mature nymph. Fig. 304.—Pseudiron centralis, gill of third abdominal segment. Fig. 305.—Siphloplecton interlineatum, head of adult male, lateral aspect
. Bulletin. Natural history; Natural history. May, 1953 Burks: The Mayflies of Illinois 145 era, the body is elongate and fishlike, but in Gills are borne by abdominal segments 1-7, Pseudiron, it is flattened dorsoventrally. but the structure of these gills varies greatly. Fig. 301.—Pseudiron centralis, hind leg of mature nymph. Fig. 302.—Siphloplectnn interlincatum, middle leg of mature nymph. Fig. 303.—Siphloplecton interlineatum, fore leg of mature nymph. Fig. 304.—Pseudiron centralis, gill of third abdominal segment. Fig. 305.—Siphloplecton interlineatum, head of adult male, lateral aspect. Fig. 306.—Siphloplecton interlineatum, terminal abdominal sternites of female. Fig. 307.—Pseudiron centralis, terminal abdominal sternites of female. Fig. 308.—Siphloplecton basale, wings. Fig. 309.—Siphloplecton interlineatum, male genitalia. Fig. 310.—Pseudiron centralis, male genitalia. Fig. 311.—Siphloplecton hasale, 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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Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectnaturalhistory
