1092 HEMIPTERA 
bakert. Cowen,cAphis (Clover aphid); -.7-e no ane ae ee eee Fam. Aphididae 
Hosts — Malus, Crataegus, clover. 
Injury — Sucks juice from opening buds of fruit trees. 
Distribution — North America. 
References — Quaintance, A. L., and Baker, A. C. U.S. Agr. Dept. Farmers’ bul. 
804:15. 1917. 
Patch, E. M. Maine Agr. Exp. Sta. Bul. 270:49. 1918. 
belluta;Gibsonts Corythucha = ne eee ee ee eee Fam. Tingitidae 
Hosts — Crataegus neofluvialis, C. punctata, C. albicans, Alnus incana, Ribes oxyacan- 
thoides. 
Injury — Both young and adult bugs suck juice from leaves, causing them to turn brown 
and drop off. 
Distribution — Northeastern United States, Canada. 
References — Gibson, E. H. Amer. Ent. Soe. Trans. 44:93. 1918. 
Wellhouse, W. H. Journ. econ. ent. 12:441. 1919. 
(Plates LX XII and LXXIII, pages 1057 and 1059.) 
betulae Bar., Epidiaspis (European pear scale)....................-.020--- Fam. Coccidae 
Synonyms — Epidiaspis lepert Sign., E. piricola De Geer, Diaspis pirt Colv. 
Hosts — Pyrus, Malus, Prunus, Crataegus, and other species. 
Injury — Very injurious to young twigs and branches of apple and pear in southern 
Europe, where the bark becomes incrusted. 
Distribution — South and middle Europe, United States. 
References — Lindinger, L. Die Schildlause, p. 213. 1912. 
Essig, E “0 Injurious and beneficial insects of California, p. 172. 1915. 
bituberculatum Rare! Lecantum sans. e 1a alt ei oe oo eee Oe eee Fam. Coccidae 
Hosts — Crataegus oxyacantha, Malus, Pyrus. 
Injury — Sucks sap from bark, sometimes killing young trees. 
Distribution — Europe, North America. 
References — Sorauer, P. Handbuch der Pflanzenkrankheiten 3:695. 1913. 
Dietz, H. F., and Morrison, H. Indiana State Ent. - Ann. rept. 8: 254. 
1916. 
brevis Sand., Aphis (Long-beaked clover aphid)........................... Fam. Aphididae 
Hosts — Crataegus, Cydonia, Pyrus, clovers, sweet pea. 
Injury — Curls and turns purplish the terminal leaves of Crataegus shoots during June. 
Distribution — United States. é 
Reference — Patch, E. M. Journ. agr. res. 3:431. 1915. 
brunnea: Gibson, Corytchds.sem se ee oe ee eee Fam. Tingitidae 
Host — Crataegus. 
Injury — Sucks juice from foliage. 
Distribution —Southern United States. 
Reference — Gibson, E. H. Amer. Ent. Soc. Trans. 44:93. 1918. 
bubalis Pabr.|Ceresa (Buttalo treeshopper)is-...-4)a.. +e ee eee Fam. Membracidae 
Hosts — Malus, Crataegus, and other species. 
Injury — Adult makes incisions in branches for oviposition. Incisions are slow to 
heal and allow entrance of borers and fungi. 
Distribution — North America. 
References — Packard, A. 8S. Fifth rept. U.S. Ent. Comm., p. 535. 1890. 
Hodgkiss, H. E. New York (Geneva) Agr. Exp. Sta. Tech. bul. 17:92. 
1910. 
clitellarius Say, Uhamnotetiia can. = sae oe one eee eee eee Fam. Cicadellidae 
(See page 1061.) 
