PONTEDERIACEAE 

 Pontederia cordata. Hazen, T. E. 1917. The trimorphism and insect visitors of Pontederia , 

 Torrey Bot. Club Mem. 17: 459-484. 



POTAMOGETONACEAE 

 Potamogeton. Berg, C. O. 1949. Limnological relations of insects to plants of the genus 

 Potamogeton. Amer. Micros. Soc. Trans. 68 (4): 279-291. 



PRIMULACEAE 

 Primulus. Christy, M. 1922. The pollination of the British Primulas. Linn. Soc. London, Jour., 



Bot. 46: 105-139. 

 Primulus. Poulton, E. B. 1923. Notes on insects visiting the common primrose. Ent. Soc, 



London, Proc. 1922-23: (Ixxxiv-lxxxvi). 



RANUNCULACEAE 

 Caltha palustris. Judd, W. W. 1964. Insects associated with flowering marsh marigold, Caltha 



palustris L., at London, Ontario. Canad. Ent. 96 (11): 1472-1476. 

 Ranunculus. Linsley, E. G., and J. W. MacSwain. 1959. Ethology of some Ranunculus insects 



with emphasis on competition for pollen. Calif. Univ., Pubs., Ent. 16 (1): 1-45. 

 Ranunculaceae. Goury, G., and J. Guignon. 1904. Les insectes des Renonculacees. Feuille 



Jeunes Nat. 34: 88-91, 112-118, 134-142.' 



RESEDACEAE 

 Resedaceae. Goury, G., and J. Guignon. 1913. Insectes parasites des Resedacees. Feuille 

 Jeunes Nat. 43: 24-28. 



RHAMNACEAE 

 Ceanothus. Banks, N. 1912. At the Ceanothus in Virginia. Ent. News 23: 102-110. 



ROSACEAE 



Crataegus. Wellhouse, W. H. 1922. The insect fauna of the genus Crataegus. N.Y. (Cornell) 

 Agr. Expt. Sta. Mem. 56, pp. 1041-1136. 



Fragaria. Brooks, A. N., and E. G. Kelsheimer. 1961. Insects and diseases affecting straw- 

 berries. Fla. Agr. Expt. Sta. Bui. 629, 35 pp. 



Malus. Cleveland, M. L., and D.W.Hamilton. 1958. The insect fauna of apple trees in southern 

 Indiana, 1956 and 1957. Ind. Acad. Sci. Proc. 68: 205-217. 



Malus. Massee, A. M. 1962. Apple orchard fauna. So. London Ent. and Nat. Hist. Soc. Proc. 

 and Trans. 1961: 62-72. 



Malus. Phillips, E. F. 1933. Insects collected on apple blossoms in western New York. Jour. 

 Agr. Res. 46: 851-862. 



Malus. Smith, G. A. 1960. The apple tree community. 96 pp. Channel Press, Great Neck, N.Y. 



Prunus. Madsen, H. F., andL.B. McNelly. 1961. Important pests of apricots. Calif. Agr. Expt. 

 Sta. Bui. 783, 40 pp. 



Pyrus communis. Golf ari, h. 1937. Contributi alia conoscenza dell' entomofauna del pero. (Pirus 

 communis L.). Bologna Univ., 1st. Ent. Bol. 9: 206-249. 



Pyrus communis. Madsen, H. F., and M. M. Barnes. 1959. Pests of pear in California. Calif. 

 Agr. Expt. Sta. Cir. 478, 40 pp. 



Rosa. Balduf, W. V. 1959. Obligatory and facultative insects in rose hips. 111. Biol. Monog. 26, 

 194 pp. 



Rosa. See VIOLACEAE. Chittenden, 1901. 



Rubus and Spiraea. Blackman, M. W. 1918. On the insect visitors to the blossom of wild black- 

 berry and wild spiraea — a study in seasonal distribution. N.Y. State Col. Forestry, 

 Syracuse Univ., Tech. Pub. 10 (v. 18, No. 4): 119-144. 



Rubus. Chamberlain, G. C, and W. L. Putnam. 1955. Diseases and insect pests of the rasp- 

 berry in Canada. Canada Dept. Agr. Pub. 880, rev., 34 pp. 



Rubus. Dicker, G. H. L. 1939. Insects associated with cultivated forms of Rubus. Soc. Brit. 

 Ent. Trans. 6: 115-136. 



18 



