Platynota Idaeusalis Research Articles

Evidence of an Attractant for the Click Beetle, Melanotus depressus , in the Pheromones of Two Platynota spp. (Lepidoptera: Tortricidae) 1

Pheromone traps for 11 tortricid species were monitored in apple orchards throughout the Hudson and Champlain Valleys of New York. A click beetle, Melanotus depressus (Melshiemer), was found in the traps for the tufted apple budmoth, Platynota idaeusalis Walker, and the variegated leafroller, Platynota flavedana Clemens, but not in those of the other 9 species. Trap counts indicated beetle activity peaked in late May and again in late July at most locations. ( E )-11-tetradecenyl acetate and ( E )-11-tetradecen-1-ol were the Tufted apple budmoth pheromone components, while ( E )-11-tetradecen-1-ol and ( Z )-11-tetradecen-1-ol were the variegated leafroller pheromone components, which resulted in M. depressus attraction.

Rate of Development of Platynota idaeusalis1 at Constant Temperatures2

The relationship between the rate of larval and pupal development and constant temperatures for the tufted apple budmoth, Platynota idaeusalis (Walker), is discussed. A logistic equation was used to model this relationship. No statistical difference was found between male and female developmental rates. The maximum rate of development was estimated to be ca. 4% per day at ca. 32.2°C, while the highest rate of survival occurred at 26.7°C.

Apple, Late Season Leafroller Control, 1975

Abstract This experiment was designed to determine if one application in early August or one application late in August or two applications in August of selected insecticides would control the tufted apple budmoth and redbanded leafroller. The schedule of materials used per acre (other than the test materials) was: April 14, Difolatan, grower applied; April 25, Oil 7E cone; May 5, Captan 50W 6.0 lb + Sulfur 6.0 lb + Agri-Strep 1.5 lb; May 20, Captan 50W 6.0 lb + Kararhane 1.0 lb + Zolone 3EC 42.0 oz; June 2, Captan 50W 5.0 lb + Phosphamidon 8E 5.0 oz; June 12, Captan 50W 5.0 lb + Kararhane 2.0 lb + Zolone 25W 3.0 lb; June 24, Captan 50W 4.0 lb + Kararhane 1.0 lb + Zolone 25W 3.0 lb; July 11, Captan 50W 4.0 lb + Zolone 25W 3.0 lb; July 28, Captan 80W 2.7 lb + Zolone 3EC 32.0 oz; August 1, Omite 30W 4.0 lb; August 15, Captan 80W 4.0 lb. Two 5-tree plots of Lannate L 32.0 oz/100 gal and Phosvel 45W 1.5 lb/100 gal and one 5-tree plot of Guthion 50W 0.5 lb/100 gal were sprayed dilute with a Bean high pressure sprayer operating at 540 psi on August 1. One of the plots of Lannate L and Phosvel and the Guthion plot sprayed on August 1 were sprayed again on August 20. Also one 5-tree plot unsprayed since July 28 was sprayed with Lannate L and a similar plot was sprayed with Phosvel. The treatments were evaluated by examining 10 leafrolIs/tree (50/treafment) on August 4 and August 26 to determine larval mortality. The apples were examined for leafroller injury on August 28 (50 apples/tree, 250 apples/treatment). Fruit was examined at harvest (October 7) to ascertain the increase in number of damaged apples since the summer examination (August 28). Some apples had more than one type of damage, thus, the total number of apples damaged may be less than combined total number of apples damaged at different times of the season (early + late).

Sex Pheromones of the Tufted Apple Bud Moth (Platynota idaeusalis)1, 2

Platynota idaeusalis (Walker) males were previously known to be attracted to trans -11-tetradecen-1-ol, and addition of trans -11-tetradecenyl acetate in a 1:1 ratio increased these catches. Both these compounds have now been found in extracts of female abdominal tips in an alcohol:acetate ratio of about 2:1. Catches of males in field tests were highest when mixtures of 5 μ l of trans -11-tetradecen-1-ol plus 5–15 μ l of trans -11-tetradecenyl acetate on rubber septa were used as lures. Addition of 10 or 20% of the cis isomer of the alcohol attractant decreased the catch by more than ½, while addition of 20% of the cis acetate decreased attractancy by ¼.

Sex Attractants and Traps for Tufted Apple Bud moth and Red banded leaf roller Males12

The tufted apple budmoth, Platynota idaeusalis Walker, is a newly important apple pest in south-central Pennsylvania. Six formulations of trans -11-tetradecenyl alcohol, a sex attractant of the male tufted apple bud moth, were compared in a block of infested apple trees. A mixture (1:1) of the attractant and trans -11-tetradecenyl acetate Was the most active formulation. Two types of commercial adhesive-coated insect traps baited with sex attractants were compared for capturing male tufted apple bud moths and red banded leaf roller moths, Argyrotaenia velutinana (Walker). Significantly more male moths were captured in the Pherocon 1 C® trap than in the Sectar® trap.