Parasite Identification and Confirmation 
Emphasis on the importance of collecting ticks from all livestock species 
for identification continued during fiscal year 1971. A total of 2,852 
collections of ticks were received and identified at the ANH Division 
Ectoparasite Reference Center, Beltsville. The laboratory also identified 
265 mite specimens and 103 miscellaneous (lice, grubs, fleas, etc.) specimens. 
Approximately 2,695 collections of suspected screwworm larvae were received 
and identified at Beltsville and at the ANH Division Screwworm Data Center, 
Mission, Tex. Of these, 741 collections were identified as screwworms, and 
the remainder were classified as various species of blowfly larvae. 
Chemical Analyses 
During fiscal year 1971 the ANH Division Chemical Reference Laboratory at 
Beltsville actively supported field activities and, in addition to tissue 
residue work, performed quantitative analyses on the following samples. |/ 
Arsenic - 13,104 Ciodrin - 18 Co-Ral - 988 
Delnav - 8,607 Imidan - I14 
Tick Eradication Training Schools 
A tick eradication training school was held in Laredo, Tex., July I3-I7, 
1970. There were |4 participants from the ANH Division and four from the 
Texas Animal Health Commission. The 14 ANH personnel were from Alabama, 
Arizona, Colorado, Florida, Kentucky, Louisiana, Missourl, Nebraska, Texas, 
and Puerto Rico. In addition, one veterinarian employed by the government 
of Mexico attended. This brings the total number of persons receiving such 
training to 238. 
The training sessions were conducted by ANH Division personnel to teach 
the livestock inspectors and veterinarians the fundamentals of the identi- 
fication, biology, Inspection, treatment, and eradication of cattle fever 
ticks (Boophilus spp.). Emphasis was also placed on the recognition and 
importance of domestic and exotic livestock ticks. 
i 
Trade names are used in this publication solely for the purpose of provid- 
ing specific information. Mention of a trade name does not constitute a 
guarantee or warranty of the product by the U.S. Department of Agriculture. 
