Red spider on cotton (Tetranychus bimaculatus Harvey) . r decimation of the red spider. It has been recorded from the follow ing localities: Allendale, Anderson, Batesburg, Brownsville, and St. Matthews,; Chase City, Va.; Macon, Ga.; and Albertville and Boaz, Ala. It evidently has a wide distn- TripMeps imidiosui Saj (fig. ID- A small anthocorid bug,Triphleps insidi - s Say, was seen as earlj as Maj 16. It is hardierthan tin- Arthrocnodas and appears earlier in the season. I hrough-ont July and August it is extremelj common and both in thenymphal and adult stages is second only to the iton
Red spider on cotton (Tetranychus bimaculatus Harvey) . r decimation of the red spider. It has been recorded from the follow ing localities: Allendale, Anderson, Batesburg, Brownsville, and St. Matthews,; Chase City, Va.; Macon, Ga.; and Albertville and Boaz, Ala. It evidently has a wide distn- TripMeps imidiosui Saj (fig. ID- A small anthocorid bug,Triphleps insidi - s Say, was seen as earlj as Maj 16. It is hardierthan tin- Arthrocnodas and appears earlier in the season. I hrough-ont July and August it is extremelj common and both in thenymphal and adult stages is second only to the itonid as a redspider enemy. Coming upon a red spider, like a flash the adull thrusts its sharp proboscis through the pests back and proc Is quietly to siphon out the body contents. The first victim observedwas drained in about five minutes, but each succeeding meal wasof shorter duration as the appetite became satisfied. The actionsof the nymph (fig. 12) are similar, but the individuals obseiwere seen onlv to destroy eggs of the spider. In this operation. Fn .ii / • ?;?? Impoi the red spld Mu< b ? VuUiors lllustralV i The i • :- 16 THE RED SPIDER ON COTTON. the proboscis was not inserted far into the ovum, and two minutessufficed for draining an egg. A species of lace-winged fly {Chrysopa quadripunctata Burin.,determined by N. Banks) is abundant at Batesburg throughout most of the summer, and its larva is doubtless very active in reducing thepest. Two species of thrips, Euthrips fvscus Hinds and E. occidentalsPergande, have been determined this season from cotton. They arccommonly found throughout the season about red-spider colonies, and may be instrumental inspider destruction. Scolo-f/irlps sexmaciihitits Pergandehas been recorded as an enemyof the red spider by Pergandeand by Duffy. Lady-beetle larvae and adultsof several species are com-monly seen on infested Leaves,These are usually either Coc-cinella 9-notata Hbst. or Hip-podamia convergent a small black sp
Size: 1664px × 1501px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorunitedst, bookcentury1900, bookdecade1910, bookyear1913
