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Book Notes: An Introduction to the Study of Insects: Introduction to Comparative Entomology: The Life of Insects.

Florida Entomologist


Scientific Notes 291 MOVEMENT OF PHYLLOCNISTIS CITRELLA (LEPIDOPTERA: GRACILLARIIDAE) FROM A GROVE TO TRAPS AND SENTINEL PLANTS IN ADJACENT LAND Craig P. Keathley* and StePhen l. laPointe United States Department of Agriculture, Agricultural Research Service, U.S. Horticultural Research Laboratory, 2001 South Rock Road, Ft. Pierce, FL 34945, USA *Corresponding author; E-mail: [email protected] The leafminer, Phyllocnistis citrella Stainton (Lepidoptera: Gracillariidae), is a global pest of citrus (Rutaceae) (Heppner & Fasulo 2010). Lar- vae burrow into young leaves and create serpen- tine mines that damage leaves and create wounds susceptible to infection (Achor et al. 1997; Schaf- fer et al. 1997). Male P. citrella are attracted to lures containing a 3:1 blend of (Z,Z,E)-7,11,13- hexadecatrienal (triene) and (Z,Z)-7,11-hexadec- adienal (diene), the major components of the fe- male sex pheromone (Lapointe et al. 2006). While the 3:1 blend has been shown to be necessary and sufficient to attract large numbers of P. citrella males (Lapointe et al. 2006), the triene was iden- tified as the most effective compound for mating disruption applications (Lapointe et al. 2009; Stelinski et al. 2010). The effectiveness of mat- ing disruption for controlling the population may be limited by immigration of mated females into pheromone-treated areas from neighboring un- treated areas. Very little is known about the ac- tive or passive movement of P. citrella. Therefore, we constructed sampling transects to estimate the extent to which males and females move up to 1,200 m away from an infested grove and the importance of wind for that movement. Our study site (N 27° 26' W 80° 41', BAE Groves Inc., Fort Pierce, Florida) included citrus groves (4.4 km2), an adjacent pastureland, and a reservoir (2.6 km2, Fig. 1A). In 2013, we placed 20 Pherocon® green bucket traps (Trécé, Adair, Oklahoma) in pastureland 75, 150, 300, 600, and 1,200 m west of the groves along 4 li

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