. Fresh-water biology. Freshwater biology. THE WATER-MITES (HYDRACARINA) 54 (6i) Posterior margin of ep. IV rounded or transverse . 871 SS 55 (58) With swimming-hairs 56 56 (57) Transverse diameter of ep. IV the greater, suture between epp. Ill and IV complete; no prominent papillae on pal. seg. 4, acetabula very numerous Neumania Lebert Mites of small to medium size, varying in length from to i .6 mm., with soft body, tending more or less to develop chitinous plates or beset with chitinous points, rarely smooth; leg IV usually with feathered spines. Brightly colored, red or bluish
. Fresh-water biology. Freshwater biology. THE WATER-MITES (HYDRACARINA) 54 (6i) Posterior margin of ep. IV rounded or transverse . 871 SS 55 (58) With swimming-hairs 56 56 (57) Transverse diameter of ep. IV the greater, suture between epp. Ill and IV complete; no prominent papillae on pal. seg. 4, acetabula very numerous Neumania Lebert Mites of small to medium size, varying in length from to i .6 mm., with soft body, tending more or less to develop chitinous plates or beset with chitinous points, rarely smooth; leg IV usually with feathered spines. Brightly colored, red or bluish forms, active, but not markedly voracious. Several North American species, common, and widely dis- tributed. Fig. 1347. _ iVcMwoMia spinipes (Muller), a European species represented in this country by a closely allied form. Ventral surface, male. X 40. Outer side, palpus, male. X 70. (Modified from Piersig.) 57 (56) Longitudinal diameter of ep. IV at least equal to the transverse, suture between epp. Ill and IV incomplete mediaOy; pal. seg. 4 usually with prominent papillae; s or 6 acetabula on each side on one or two plates. (Non-parasitic species) Unionicola' 1842. 58 (ss) Without swimming-hairs S9. 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. ]
Size: 1273px × 1963px
Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectfreshwa, bookyear1918
