STRAWBERRY PESTS 



1939 



Leaf Roli-KK. See Strawberry Leaf 

 Roller. 



May Bef.ti.e. See White Griihs. 



Oltsolrtp — Banded Strawberry Leaf 

 Koller 



Archips olisolctaiia 



Habits similar to strawberry leaf roller, 

 which see. Also similar methods of con- 

 trol. 



Roller. See Straioberry Leaf Roller. 



Root Louse. See Strawberry Rout 

 Louse. 



Rose Beetle. See Fuller's Rose Beetle. 



Saw Fly 



Harpiphorus maculatus 

 The larva of this insect is a pale green 

 worm which works on the foliage and is 

 distinguished from other worms which 

 affect the strawberry by the number of 

 legs (22). See Leaf Feeders. 



Spittle Insect 



Aprophoninae sp. 



Small bugs which lay their eggs in the 

 stems of the plants in the autumn and 

 hatch in the spring. A clear viscid liquid 

 is secreted at the anal end and by a con- 

 tinual thrashing about of the tail the in- 

 sect brings in air which produces the 

 froth or "spittle" which so attracts curios- 

 ity to these bugs. They are sought after 

 by certain wasps who drag them out of 

 their froth to provision their nests. 



*According to Melander they are not 

 materially harmful unless in great num- 

 bers. On account of their conspicuous 

 "spittle" they may be gathered by hand 

 and destroyed most economically. They 

 are found usually near the base of the 

 plant 



Howard. The Insert Book. 



Strawberry frown Miner 



Aristotellia sp. 

 A. L. Lovett 

 This strawberry crown miner is present 

 in the Pacific Northwest about everywhere 

 that the strawberry is grown. In many 

 localities fields have been observed which 

 were severely injured and an examina- 

 tion showed this pest to be wholly re- 

 sponsible for the trouble. 



While the names of these various in- 

 sects infesting the strawberry roots may 

 at first appear confusing, a glance at Pig. 

 1 will aid in distinguishing the work 

 of this pest. The larvae are not grub-like, 

 but are longer, more slender, of a distinct 

 reddish color and with a brown head. 

 When mature they are less than half an 

 inch in length. They feed almost entirely 

 within the crown, usually mining just 

 within the bark, constructing long tun- 

 nels either up and down or around the 

 crown. Others tunnel directly through 

 the crown or else up and down the cork- 

 like interior of the root. Still other lar- 



•Melander Bet. Frt., Dec. 1912. 



Fig. 1. (.iriiitotcllia sp.) Strawberry crown, 



.showing the burrows of the crown miner- 



Also a mature larva in its cocoon in the 

 crown. (Original. I 



vae are found feeding in the whorl of 

 leaves at the growing tip of the crown 

 and a few have been observed mining in 

 the petiole of the leaves. 



The adult of this crown miner is a 

 small moth, resembling very closely in 

 general appearance the peach twig miner, 

 Anaisia lineatella. It is a weak flier and 

 very sluggish in its movements. The eggs 

 are deposited on the sheaths about the 

 crown, on the underside of the leaves, 

 and along the leaf petioles. They are 

 usually pushed well down among the fine 

 hairs. The egg is white with a dull lustre, 

 a slight area at the smaller end being 

 transparent. The surface of the egg is 



