. Bulletin. Natural history; Natural history. Ma\, 1;H>8 SiANNARii: Till-. 'lEiRirs oi Illinois 425 and structure similar to macropterous female except for the following. Wing pads extending to the second abdomi- nal segment. Abdominal sternite VIII with a thin, median, transverse glan- dular area. Abdominal tergite IX with major lateral setae reduced in size. This species has been known to me for many years prior to its formal de- scription. Although I listed its char- acteristics in 1955, I hesitated to name it then because I was unable to com- pare all its features with those of the macr
. Bulletin. Natural history; Natural history. Ma\, 1;H>8 SiANNARii: Till-. 'lEiRirs oi Illinois 425 and structure similar to macropterous female except for the following. Wing pads extending to the second abdomi- nal segment. Abdominal sternite VIII with a thin, median, transverse glan- dular area. Abdominal tergite IX with major lateral setae reduced in size. This species has been known to me for many years prior to its formal de- scription. Although I listed its char- acteristics in 1955, I hesitated to name it then because I was unable to com- pare all its features with those of the macropterous form of jiavescens. Ac- cording to Hood (1957), the character- istics mentioned in the foregoing key will separate the two species, irrespec- tive of the form. As is Jiavescens, arkansanus is prob- ably statewide in distribution, and the two are frequently found together in grass clumps, particularly Ajidropogon. Illinois records.—Champaign County: Seymour, February 28,1936, Farrar, under rye grass, 4 9 . Coles County: Mattoon, May 14, 1933, Mohr, grass sod, 1 9, 1 cf. Cook County: near Elgin, Shoefactory Road prairie, October 10, 1952, Ross, Stannard, sod of Amlropogon, 5 cf. De Witt County: Farmer City, No- vember 6, 1953, Smith, Stannard, sod of Anclropogou, 2 9 . IROQUOIS Coun- ty: Milford, October 21-25, 1962, Mc- Collum, Roberts, sod of Andropogon, 3 d'. Piatt County: Mansfield, Feb- ruary 28, 1936, Farrar, sod of Andro- pogon, 2 9 ; Monticello, December 2, 1937, September 22, 1938, March 17, 1939, January 12, 1939, .January 23, 1942, Farrar, sod of Andropogon, 5 9, cf. Giyplothrips flavescens Hood Glyplothrips fiavescens Hood {1912b: 116). 9. type-locality.—Grand Tower, Illinois. Female (apterous) (Fig. 226).— Length distended about 2 mm. Gen- eral color yellowish brown with head, antennal segments I and II and pedi- cels of remaining segments, two mesal longitudinal lines on the abdominal tergites, and the terminal abdominal segments grading into yellow.
Size: 844px × 2960px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectnaturalhistory
