. Fresh-water biology. Freshwater biology. Very small mites, varying in length from to mm., with the posterior margin of the body deft; no swimming-hairs; leg IV of male with segs. 4 to 6 strikingly modified. One species, Aturus mirabitis, is recorded from Canada by Koenike. The genus is characteristic of rapidly flowing streams. Fig. 1337. Aturus sraber (Kramer), a European spe- cies. Ventral surface of male. X 6i. Outer side of palpus, female. X 150. (Modified from Piersig.) 36 (31) Suture open anteriorly, the two ends passing around on to the ven- tral surface 37 37 (38) Genital a
. Fresh-water biology. Freshwater biology. Very small mites, varying in length from to mm., with the posterior margin of the body deft; no swimming-hairs; leg IV of male with segs. 4 to 6 strikingly modified. One species, Aturus mirabitis, is recorded from Canada by Koenike. The genus is characteristic of rapidly flowing streams. Fig. 1337. Aturus sraber (Kramer), a European spe- cies. Ventral surface of male. X 6i. Outer side of palpus, female. X 150. (Modified from Piersig.) 36 (31) Suture open anteriorly, the two ends passing around on to the ven- tral surface 37 37 (38) Genital area with 4 acetabula on each side . Axonopsis Piersig A very small, brightly-colored mite about mm. in length, with a median cleft in the posterior margin of the oval body; the anterior epimera extended beyond the capitulum; few swimming- hairs. One North American species, rare, in northern lakes, apparently the same as the European A. complanata (MuUer). Fig. 1338. Axonopsis complanata (MuHer). Ventral surface of female. X so. Outer side, right palpus. X 123. (Modified from Piersig.). 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 Ward, Henry Baldwin, 1865-1945; Whipple, George Chandler, 1866-1924. joint author. New York, John Wiley & sons, inc. ; [etc. ,etc. ]
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfreshwa, bookyear1918
