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early in the season rihen plants -jere less than S inches high. 
A common ^veed (undetermined) in the Yaqui Valley is the natural 
food-plant here, and damage to cotton v/as confined to fields 
rhere this "'as abundant. In all fields cotton finally developed 
so much faster than the tingids multiplied that there v.-as no ap- 
parent effect from the attack. On the whole , it is evident from 
this season's experience that ;7ith reasonably clean cultivation 
no appreciable damage need be feared from this insect. 
ISLL IITEBTORII ( H:"Dhantria cunea l!rury) 
lassissippi 3. Y7. Earned (September 22): 5peci"«ns of the fall v,«b'7orm col- 
lected on cotton have recently been received from t-o localities 
111 3olivar County, and on locality in Madison County. In all 
cases the correspondents reported these insects as abundant in 
one or tv;o spots in their cotton fields. 
COTTON BUCCULifflRIX ( Bucculatrix gossvTjiella Jlorrill) 
Mexico .'. Morrill (September l6) : The first specimens for the sea- 
son in the YaQui Valley were discovered July 25. On August 1, 
20 leaves pi deed at random v;crc cxairdncd sho'Ting 12 damaged by 
tunnelling of larvae at outer end of petioles, at jiinction ^.th 
leaf blades. C-reen boll infestation mavery rare at that tiire. 
3y September I5, 20 leaves from the same locality, approximately 
tiie same cotton ro-'s, shoved 100 per cent damaged at ends of ■ 
petioles, the average number of -orm tumiels being much greater 
than 6 vreelcs earlier. Green bolls sho'" an average of about 5 
or 5 spots indicati;i5 larvae -.-orl-cing in carpels or emerging 
therefrom. Damage inappreciable to first picking of three- 
fourths of a bale -Der acre in a field planted April I5. Later 
setting of bolls appear to be damc^ed to the extent of at least 
10 T:er cent. 
CCTTOIT APHIS ( aphis gossr^-pix C-lov. ) 
Mississippi 3. Harned (September 22): A. L. Hamner ' observed a cotton 
field at McCool on September 9 that "Bbovod a hoat^ UnfDstatxon 
of the' cotton aphid. This particular field had been dusted V7ith 
calcium arsenate five times in order to control the boll veevil. 
The cotton -'as youiig and had a fairly good bloom on the date ex- 
amined. 
• 3EA2" THRIPS ( Hcliothrips fasciatus Pcrg. ) 
[aexi CO 
Vi. Jaorrill (September I9): Severe dam^'.ge in the Ya^ui Valley 
in areas up to 10 acres became sonspicuous about August 20,^ 
especially noticeably in fields v/here peas had been grov/n during 
loreceding •-•inter aiid spring. In sv.ch- fields many volunteer pea 
plants appeared -dth the youn- cotton and soon beca.re generally 
i".fested'"n_th thrips. The peas died during the extremely hot, 
d-x-^- "'eather in Maj- ^nd June, forcing the tiirips to the cotton. 
