48 



The Pear Thrip in the region around San Francisco Bay attacks 

 pears, plums, prunes, etc., but as the insect spends eleven months 

 in the ground, thorough plowing and cultivation helps much in its 

 control. It attacks the leaves and scars the young fruit. The above 

 spray applied in March and again in April is recommended. 



The Bean Thrip does much damage to beans and peas, attacking 

 the under side of the leaves. 



Other varieties attack the orange bloom with but little injury, 

 but on roses, etc., in greenhouses, they have to be fought constantly. 



Peach Twig Borer 



(Anarsia Uneatella) 



This borer is also known as the Peach Moth, Peach Worm and 

 the Bud Worm. It is a peculiar insect, the means of doing great 

 damage in some of the deciduous fruit regions of the State, and of 

 some importance in our County. It should be known, watched 

 for and guarded against carefully. 



During the winter the little larva or worms are hibernating in 

 the thick bark at the crotches and about wounds in the trunk of 

 the tree. They are only about 1-32 of an inch long, and grow 

 before pupating to a length of ^4 to ^ of an inch. Their hiber- 

 nating place can be detected by little chimneys of bark pulp about 

 1-32 of an inch high erected at the mouth of each burrow. When 

 spring arrives they come out and bore into the swelling buds and 

 starting twigs, killing them. New grafts and dormant buds are very 

 apt to be attacked. In six weeks they pupate in curls of the bark 

 on the trunk and soon come out a moth of steel gray color and 

 quick movement. Three generations are hatched during the sum- 

 mer. The first from eggs deposited in the young twigs about May 

 10th. These bore into the pith of the twig and kill it, then later 

 enter the fruit about the stem and after injuring it considerably, 

 come out and pupate during June, July and August in the suture 

 cleft of the fruit near the stem. In a week the second moth ap- 

 pears depositing eggs on the fruit near the stem dent. In a week 

 these hatch out worms which eat into the fruit working there for 

 a month, then coming out to pupate again, the third moth appear- 

 ing in a week to deposit eggs in cracks of the bark from which 

 hatch the worms which at once begin burrowing, in the crotches of 

 the trees, the chambers with chimneys, in which to pass the winter. 



Remedy: Lime-sulphur spray applied hot if possible, just be- 

 fore blooming time. 



