. Bulletin. Natural history; Natural history. 156 ILLINOIS NATURAL HISTORY SURVEY BULLETIN XX:ill. P. pennsylvanica (DeGeer).—This insect is distributed generally and is decidedly the most abundant native cockroach throughout the state. Beach: Aug. 22, 1906, l9on sand ridges. Chicago: Feb. 4, 1906, Icf in Lincoln Park greenhouse. Algonquin: May 1 to July 24, 1905 to 1909,90^. Oregon: June 19, 1917, Id', 19. Summit: July 20, 1907, 19, Zetek. Aurora: June 1908, Icf, 19, in coitu on oak. Sparland: June 3, 1933, Icf, Mohr. Rock Island: May 21, 1928, Id". Monmouth: Apr. 2, 1928, 1 nymph, Priso
. Bulletin. Natural history; Natural history. 156 ILLINOIS NATURAL HISTORY SURVEY BULLETIN XX:ill. P. pennsylvanica (DeGeer).—This insect is distributed generally and is decidedly the most abundant native cockroach throughout the state. Beach: Aug. 22, 1906, l9on sand ridges. Chicago: Feb. 4, 1906, Icf in Lincoln Park greenhouse. Algonquin: May 1 to July 24, 1905 to 1909,90^. Oregon: June 19, 1917, Id', 19. Summit: July 20, 1907, 19, Zetek. Aurora: June 1908, Icf, 19, in coitu on oak. Sparland: June 3, 1933, Icf, Mohr. Rock Island: May 21, 1928, Id". Monmouth: Apr. 2, 1928, 1 nymph, Prison and Ross. Peoria: June 1879, 1 large juv. d, TC. Danvers: May 27, 1932, 19, Prison. Leslie: May 1881, \d. ElUott: July 10, 1906, 39. Topeka: Aug. 22, 1904, 19, Hart and Brown. Devil's Hole: June 8, 1905, Icf. Havana: June 9 to Aug. 15, 1905 to 1928, 9cf, 189. Danville: July 7, 1906, 39. Muncie: May 10, 1906, 1 large juv.(f; June 13 to 15, 1905, 8d^, 99. Homer: May 26 to June 24, 1905 to 1926, 13d', 49. Urbana: Jan. 16 to May 21, 1906 and 1926, 7 juv.; June 1 to July 20, 1885 to 1909, 4^^, 89. Champaign: May 29, 1886, Id", Weed. White Heath: June 18, 1906, 19. Matanzas Lake: Aug. 23, 1894, 19, Forbes. Camargo: June 13, 1900, Id", 19, Myers. Pike: May 26 and June 25, 1906, 2d', 39, 1 Alma: June 24,1902, 29, Titus. Centralia: Aug. 28, 1905, 29. Mascoutah: July 17, 1906, 29. Mt. Carmel: July 2, 1906, 29. Dubois: July 5 and 9, 1909, 29 swept from grass. Shawneetown: Apr. 23, 1926, 2 large juv. d', Prison. Carbondale: Apr. 1882, Id'. Grand Tower: June 2, 1913, Id' in woodsatnight;June28,1906,19. Pulaski: May 26,1907, on bluff. BLATTINAE Periplaneta Burmeister KEY TO SPECIES Solid shining blackish brown. Dorsal surface of male abdomen with median segment specialized mesad. Male supra-anal plate chitinous, specialized ventrad. In- troduced, domiciliary fuliginosa, p. 156 Reddish brown with pronotal disk paler with twin large suffusions of reddish b
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