430 U. S. NATIONAL MUSEUM BULLETIN 216 



FEMALES 



1. Tergites 4-6 with a large yellow blotch on each side that covers much or most 



of the side (fig. 318,g) ; wings suffused with yellowish brown and with darker 

 yellowish-brown blotches (fig. 319, g); range: west of Rocky Mts. 



4c. macrurus icterosticta Michener 



Tergites 4-6 with a narrow, angular, yellow subapical band on each side 



(fig. 318,f) 2 



2. Wings hyaline or with a light brown suffusion, the front wing with brown 



markings (fig. 319, e); range: Canadian, Transition, and Upper Austral zones 



east of Rocky Mts 4a. macrurus lunator (Fabricius) 



Wings brown, the front wing with paler areas (fig. 319,f); range: Lower 

 Austral zone east of Rocky Mts. . . 4b. macrurus macrurus (Linnaeus) 



4a. Megarhyssa macrurus lunator (Fabricius) 



Figures 318,f; 319,d,e 



Ichneumon lunator Fabricius, 1781, Species insectorum, vol. 1, p. 430; 9 - Type: 

 9 , North America (lost) . 



Thalessal histrio Kriechbaumer, 1890, Ann. Naturh. Hofmus, Wien, vol. 5, p. 487; 

 cf. Name preoccupied in Megarhyssa by Christ. Type: cf, White Mts. 

 of North America [probably New Hampshire] (Vienna). 



Biology: Harris, 1842, . . . Insects . . . injurious to vegetation, p. 391. — Em- 

 mons, 1854, Agriculture . . . , in Natural History of New York, pt. 5, vol. 5, 

 p. 194.— D'Urban, 1865, Ent. Monthly Mag., vol. 2, p. 71.— Riley, 1870, Amer. 

 Ent., vol. 2, p. 96, 128.— Fletcher, 1881, Ann. Rep. Ent. Soc. Ontario, no. 11, 

 p. 67. — Harrington, 1882, Canadian Ent., vol. 14, p. 82; 1883, Ann. Rep, 

 Ent. Soc. Ontario, no. 13, pp. 23-24.— Gade, 1884, Bull. Brooklyn Ent. Soc, 

 vol. 7, p. 103. — Lintner, 1884, Cultivator and Country Gentleman, vol. 49, 

 p. 331.— Riley, 1885, Bull. Brooklyn Ent. Soc, vol. 7, p. 123.— Smith, 1885. 

 Bull. Brooklyn Ent. Soc, vol. 7, p. 124.— Riley, 1886, Proc Ent. Soc, 

 Washington, vol. 1, p. 15.— Harrington, 1887, Canadian Ent., vol. 19, pp, 

 206-209.— Lintner, 1888, Rep. New York State Mus. Nat. Hist., no. 41. 

 pp. 35-42. — Harrington, 1888, Ann. Rep. Ent. Soc. Ontario, vol. 18, pp. 

 25-27.— Riley, 1888, Insect life (U. S. Dep. Agr.), vol. 1, pp. 168-179 — 

 Lintner, 1889, Rep. New York State Ent., no. 4, pp. 35-36; 1893, Rep. New 

 York State Mus. Nat. Hist., no. 45, pp. 163-166; 1897, Cultivator and 

 Country Gentleman, vol. 62, p. 506. — Ashmead, 1900, Ann. Rep. New Jersey 

 State Board Agr., suppl. to no. 27, p. 572. — Fyles, 1911, Ann. Rep. Ent. Soc 

 Ontario, vol. 41, p. 80. — Douglas, 1912, Ann. Rep. State Ent. Indiana, no. 

 4, p. 105.— Baldwin, 1914, Ann. Rep. State Ent. Indiana, no. 6, p. 51. — Fyles, 

 1916, Ann. Rep. Ent. Soc Ontario, no. 46, pp. 54, 57; 1917, Ann. Rep. Ent. 

 Soc. Ontario, vol. 47, p. 28.— Barlow, 1921, Ent. News, vol. 32, p. 291 — 

 Cushman, 1926, Proc. Ent. Soc. Washington, vol. 28, p. 32.— McDaniel, 



1933, Spec. Bull. Michigan Agr. Exp. Sta., no. 238, p. 37.— Woodbury, 1933, 

 Ecol. Monogr., vol. 3, p. 191. — Abbott, 1934, Journ. New York Ent. Soc, vol. 

 42, pp. 127-133; 1934, Psyche, vol. 41, pp. 238-240;' 1937, Ent. News, 

 vol. 47, pp. 263-264.— Kaston, 1937, Bull. Connecticut Agr. Exp. Sta., no. 

 396, p. 359.— Kelley, 1939, Nature Mag., vol. 32, pp. 379-380.— Townes, 

 1939, Bull. Brooklyn Ent. Soc, vol. 34, p. 29.— Fattig, 1949, Ent. News, 

 vol. 40, pp. 69-71. 



Morphology: Abbott, 1934, Journ. New York Ent. Soc, vol. 42, pp. 127-133; 



1934, Bull. Brooklyn Ent. Soc, vol. 29, pp. 39-41; 1935, Bull. Brooklyn 

 Ent. Soc, vol. 30, pp. 10-13. — Peck, 1937, Canadian Journ. Res., sect. D 



