INSECTS OF PEACH AND PEAE. 167 



Brachyrhuiidse. 



Brachyrhinus ligustici Liniifeus; Europe. (See Grape.) 

 • Brachyrhinus corruptor Host; Italy; attacks almond. (See Grape.) 



Scolytidae. 



Scolytus amygdali Gu^rin; Mediterranean region; bark beetle in almond and apricot trees, very in- 

 jm"ious. 



LEPIDOPTERA. 

 Xyloryctidae. 



Cryptophaga unipunctata Donovan; Australia. (See Plum, Cherry.) 



Pyralldae. 



DichocTocis punctiferalis Gu6nee; Queensland. (See Corn.) 



DIPTERA. 

 Trypetidae. , 



Ceratitis capitata Wiedemann, attacks peach and almond. (See Fruit.) 

 Anastrepha ludens Loew; Mexico. (See Fruit.) 

 Dacus diversus Coquillett; India. (See Fruit.) 

 Dacus persicx Rig.; India. (See Fruit.) 

 Bactrocera tryoni Froggatt; Orient. (See Fruit.) 



PEAR. 



{Pyrus communis, etc. Family Rosaceae.) 



Fruit trees native of south-central Europe and Asia and much cultivated in this 

 country for their delicious fruits. 



A. BETTER KNOWN PEAB INSECTS LIKELY TO BE I3IPORTED. 



Psylla pyrlsuga Forster. 



(The Large Pear Psylla. Pay Hid se; Hemiptera.) 



Host: Pear. 



Injury: Quite injurious in middle Europe and Japan. 



Description and biology: Adult marked with black and red, wings yellow. Female 

 about 3.5 mm. and male 2.5 mm. in length. Winters in adult condition under bark 

 scales of the trees. Eggs are laid singly or in small groups in hairs of leaf and flower 

 etems or on leaves. Nymph is dark yellow in color, with waxy secretion. The foliage 

 is distorted and leaves rolled up; also the young branches are killed and young fruit 

 destroyed. 



Distribution: Europe, Japan. 



Henchel. G. a. 0. Did Schadlichen Forst- und Obstbaum-Insekten, 1895, p. 490. 

 SoRAiiER, p. Handbuch der Pflanzenkrankheiten, 3d ed., 1913, vol. 3, p. 647. 



Stepbanitis pyri Fabricius. 

 (The Pear Tingis. Tingitidse; Hemiptera.) 



Hosts: Pear, apple. 



Injury: Serious pest to pear and apple in Europe. 



Description and biology: Adult, about 3 mm. long; body flat and covered with rela- 

 tively large wings of a beautiful lace network; lobes of same pattern extend from 

 each side of prothorax; general color brownish, with dark bands across wings. 

 Nymph oval in outline, pale greenish in color and abdominal segments each with a 

 spine on each side; two transverse dusky bands on bodies of older individuals. Eggs 

 ovate, oblong, greenish white in color, 0.6 mm. long. Adults winter around base of 

 host plants, reproducing in spring on under surface of leaves, where all stages may 



