LITERATURE CITED 435 
1942b. Aphids from Mount Timpanogos, Utah. Great Basin Naturalist, 3: 5-8. (June) 
1942c. Amphorophora osborni. Pan-Pacific Ent. 18: 143. 
1943a. Smith and Knowlton. The aphid genus Drepanaphis Del Guercio. Jour. Elisha 
Mitchell Soc., 59: 171-6. (Dec.) a 
1943b. Three new western aphids. Ent. News, 54: 122-124. (May) 
1945a. Knowlton and Allen. Amphorophora studies. Can. Ent., 77: 111-114. (June) 
1945b. Amphorophora aphids. Ent. News, 56: 206-209. (Oct.) 
1946a. A new Macrosiphum from Zion National Park. Bull. Brooklyn Ent. Soc., 41: 1-4. 
(Dec.) 
1946b. Aphids from Mt.Timpanogos, Utah. Great Basin Naturalist, 7: 1-6. (Dec.) 
1947a. A small sage aphid. Pan-Pacific Ent., 23: 35-36. (Jan.) 
1947b. A new maple aphid from Utah and some aphid records. Jour. Kans. Ent. Soc., 20: 
24-26. (Jan.) 
1947c. Knowlton and Roberts. Artemisaphis artemisicola (Williams). Jour. Kans. Ent. 
Soc., 20: 26-27. 
1947d. A new Macrosiphum from Chrysothamnus. Ent. News, 58: 47-48. (Feb.) 
1947e. A new hollyhock aphid. Pan-Pacific Ent., 23: 137-140. (July) 
1948. A new Capitophorus aphid. Jour. Kans. Ent. Soc.: 21: 121-123. (Oct.) 
1950. - Knowlton and Hall. A new grass aphid from Utah. Ent. News 61: 41-42. 
KOCH, C. L. 
1854. Die Pflanzenlause. Nurnberg: 1-134. 
1855. Die Pflanzenlause. Nurnberg: 135-236. 
1856. Die Pflanzenlause. Nurnberg: 237-328. 
1857. Die Pflanzenlause. Nurnberg: Index, etc. 
LAING, F. 
1921. On various genera of British Aphides. Ent. Mo. Mag. 57: 118-127. 
1926. A new name for Dilachnus Baker (Aphididae). Entomologist, 59: 322-323. 
1927. ....Entomologist 60: 115-116. 
LAMBERS, D. HILLE RIS, see HILLE RIS LAMBERS, D. 
LANGE, W. HARRY 
1944. The effect of the war on truck crop insect control in California. Jour. Ec. Ent. 
37: 734-739. 
LATRIELLE, P. A. 
1802. Histoire naturelle, generale et particuliere des Crustaces et des Insectes. Paris. 
LEACH, W. E. 
1818. Note on the insect (Aphis Janigera). Trans. Hort. Soc. London, v. 3: 60-61. 
LE BARON, W. 
1872. Third Ann. Rept. on the noxious insects of the state of Illinois. (LeBaron’s Second 
Rept.) 
LICHTENSTEIN, JULES 
1882. .... Bul. Ent. Soc. Fr. (6) 2: 16. 
1885. Les Pucerons. Monographie des aphidiens. Montpellier. 1-188. 
1886. Monographie des pucerons du peuplier: 1-55. 
LINNAEUS, C. 
1758. Systema Naturae, Ed. X: 451-455. 
1761. Fauna Suecica, Ed. II (alt.): 258-262. 
1767. Systema Naturae, Ed. XII. 
MACDOUGALL, ALICE P. 
1926. Some new species of Macrosiphum from British Columbia. Pan-Pacific Ent. 2: 
165-173. 
MARCHAL, PAUL 
1928. Etude biologique et morphologique du puceron lanigere du pommier. Ann. Serv. 
Epiphyties, 14: 1-106. 
MARCOVITCH, S. 
1925. Aphis forbesi Weed, life history. Jour. Agr. Res. 30: 441-9. 
MASON, PRESTON W. 
1925. A revision of the insects of the Aphid genus Amphorophora. U.'S. Natl. Mus. Proc. 
67: 1-92. 
1937. A newroot aphid (Aphidae). Ent. Soc. Wash. Proc. 39: 166-167. 
1940. A revision of the North American aphids of the genus Myzus. U. S. Dept. Agr. 
Miscell. Pub. 371: 1-30. 
