1098 HEMIPTERA 
Injury — Sucks juice from opening buds of fruit trees in early spring. 
Distribution — Europe, North America. 
References — Leonardi, G. Gli insetti 4:228. 1901. 
Baker, A. C. Journ. agr. res. 18:311. 1919. 
pallidus Mb: cldtocenusy copie Gsmacerceia eo Dae SIS IO eee Fam. Cicadellidae 
(See page 1062.) 
pelluccaa Uhl, Diaphnidia erie eas se ee ine So a se Fam. Miridae 
(See page 1055.) 
DEV EGTANG SE OLSts: ple SY LUG fa. bee cles, hl ath fey valine Shae ss Rep eee Fam. Psyllidae 
Synonym — Psylla crataegicola Flor. 
Hosts — Crataegus oxyacantha, Carpinus betulus. 
Injury — Sucks juice from young shoots and foliage. 
Distribution — Europe, Asia. 
Reference — Aulmann, G. Psyllidarum catalogus, p. 22. 1913. 
perniciosus Comst., Aspidiotus (San José scale).....:...........2.-20020-- Fam. Coccidae 
Hosts — Many woody plants, including Crataegus and other Malaceae. 
Injury — May incrust bark and kill trees in favorable weather. 
Distribution — Asia, North America, South America, Australia, Hawaii. 
References — Sorauer, P. Handbuch der Pflanzenkrankheiten 3:690. 1913. 
Glenn, P. A. State Ent. Illinois. Rept. 28:87. 1915. 
pane Licht... Asprd1otiusin aq eae. sides Payee e oe os Stee ea ha) en oe Fam. Coccidae 
Hosts — Pyrus, Malus, Crataegus, Fraxinus, Prunus. 
Injury— May incrust branches and thus weaken or kill them. 
Distribution — Europe, Asia Minor. 
References — Lindinger, L. Die Schildlause, p. 214. 1912. 
Sorauer, P. Handbuch der Pflanzenkrankheiten 3:690. 1913. 
pomi De Geer, Aphis (Green apple aphis).................0.-00 eee e eee Fam. Aphididae 
Synonyms — Aphis mali Fabr., A. oxyacanthae Schr. 
Hosts — Malus, Crataegus, grasses. 
Injury — Sucks sap, causing leaves to curl, but no discoloration appears. 
Distribution — Europe, North America. 
References — Kaltenbach, J. H. Pflanzenfeinde, p. 202. 1872. 
Matheson, R. Cornell Univ. Agr. Exp. Sta. Memoir 24:686. 1919. 
DRALENSIS) LATIN; LA) GUS sete SUN Nes oh aa OE ore ake Se RS Be Oe Fam. Miridae 
(See page 1055.) 
DROVANCHET IV ATU) ONG tOCETUS evan tam eo eh negara nate. ays a ee Fam. Cicadellidae 
Hosts — Crataegus, Malus, Pyrus, Cydonia. 
Injury — Nymphs and adults suck juice from foliage. 
Distribution — North America. 
References — Leonard, M. D. Journ. econ. ent. 8:415. 1915. 
Van Duzee, E. P. Catalog of Hemiptera, p. 580. 1916. 
mruimosum Coq-, Lecanium (Hrosted scale).j.5......as.... +540 ode eee Fam. Coccidae 
Hosts — Many woody plants, including Crataegus. 
Injury — Principal injury from smutty fungus growing on honeydew secreted by insects 
on fruit and foliage. 
Distribution — North America. 
References — Sanders, J. G. Journ. econ. ent. 2:442. 1909. 
Essig, E. O. Injurious and beneficial insects of California, p. 149. 1915. 
prunifoliae Fitch, Rhopalosiphum (Apple bud aphis)..................... Fam. Aphididae 
Synonyms — Aphis avenae (of American authors), Aphis fitchit Sand. 
