134 BUREAU OF ENTOMOLOGY AND PLANT QUARANTINE [Oct-Dec. 
ANNOUNCEMENTS RELATING TO MEXICAN FRUITFLY 
QUARANTINE (NO. 64) 
MEXICAN FRUITFLY QUARANTINE REGULATIONS EXTENDED 
[Press notice] 
October 12, 1939. 
Discovery of additional infestations of the Mexican fruitfly in Texas led the 
United States Department of Agriculture to extend the quarantine regulations 
relating to the pest to include the counties of Dimmit, La Salle, and Webb, T ex. 
The new regulations become effective October 16. The regulated area now 
includes six counties and part of another, all in southern Texas. 
The harvesting season for host fruits of the fly as specified under current 
quarantine regulations remains the same as heretofore — from September through 
April of each year — except that in the three newly regulated counties, the 
harvesting season for grapefruit ends with the last of February. A host-free 
period must be observed in all the regulated area throughout the remainder of 
the year. These local control measures are provided under Texas State regu- 
lations. 
Citrus fruits, when produced under such conditions as to render them free 
from infestation by the Mexican fruitfly, may be shipped interstate from the 
regulated area under Federal permit, except that no restrictions are placed on 
the interstate movement of lemons and sour limes and no permit is required 
in shipping these fruits. 
REVISION OF REGULATIONS 
Introductory Note 
The following revision of the Mexican fruitfly regulations adds the counties of 
Dimmit, La Salle, and Webb, in Texas, to the regulated area because of the dis- 
covery of infestation, and requires that grapefruit, as a condition of interstate 
movement from these three counties, be harvested each year during the period 
from September to February, inclusive, and that a host-free period be maintained 
in these counties during the remainder of the year. These local control measures 
are provided under Texas State regulations. 
The harvesting season for other host fruits remains the same as heretofore 
throughout the regulated area, namely, from September to May, inclusive, with 
the host-free requirement in effect during the remainder of the year. 
Some slight modifications have been made in other regulations, chiefly for 
clarity. Former regulations 2 and 4 have been discontinued and the present 
regulations have been renumbered accordingly. 
Summary 
The interstate shipment of grapefruit, oranges, and all other citrus fruits, ex- 
cept lemons and sour limes, from the regulated area is prohibited unless a Federal 
permit has been issued therefor (regulation 3). The permits may be limited as to 
destination, and when so limited are not valid for shipment to other points except 
to diversion points for diversion to authorized destinations ( regulation 4 ( f ) ) . 
Peaches, apples, pears, plums, quinces, apricots, mangoes, sapotas, gauvas, 
mameys, ciruelas, and fruit of species of the genus Sargentia are prohibited 
interstate shipment from the regulated area. There are no restrictions on the 
shipment of lemons or sour limes (regulation 3). 
The conditions of certification, including maintenance of host-free periods, and 
sanitation measures, as well as the type of containers required in shipping, are 
specified in regulations 4 and 5. For marking requirements see regulation 6. 
Applications for permits should be made to the Bureau of Entomology and 
Plant Quarantine, 503 Rio Grande National Life Building, Harlingen, Tex. 
S. A. Rohwer, 
Acting Chief, Bureau of Entomology and Plant Quarantine. 
