Abstract Interrelationships between the southern pine beetle (SPB), Dendroctonus frontalis Zimm.) and its host pines are explained in terms of the growth--differentiation balance concept. A general hypothesis is proposed based on growth--differentiation balance in...
Abstract The validity of Dendroctonus frontalis Zimmerman, D. brevicomis Leconte, D. mexicanus Hopkins, D. vitei Wood, D. approximatus Dietz, and D. adjunctus Blandford as distinct species is supported by breeding experiments, karyology, male genitalia, and external...
Abstract Dendrolaelaps neodisetus (Hurlbutt) completed its development in 144 to 312 h at 25°C. Longevity of adults ranged from 14 to 105 days for females and 11 to 113 days for males. After a preoviposition period of 1 to 2 days, females laid an average of 3.38 ±...
Abstract First record of the thrips parasite Goetheana parvipennis (Gahan) (Eulophidae: Hymenoptera) from the Bahamas - Geotheana (=Dasyscapus) parvipennis (Gahan) (identification confirmed by Z. Boucek, Commonwealth Institute of Entomology), described from Java as a...
Abstract Convenient syntheses of (±)-frontalin (I) and (±)-brevicomins (Ila) and (Ilb) were achieved from pent-4-en-1 -ol (2) and pent-4-yn-1-ol (3). In a few simple and unambiguous steps, the alkenol (2) and the alkynol (3) were transformed into the acetal bromide...
Abstract The southern pine beetle, Dendroctonus frontalis Zimmerman (SPB), and eight of its hymenopterous parasites were studied to evaluate the effects of SPB density and tree bark thickness (BKTH) on the parasites. Significant differences between infestations were...
Abstract This laboratory study investigates the effects of constant temperature on reemergence of the southern pine beetle, Dendroctonus frontalis Zimmermann. Beetles reemerged at temperatures between 12.5 and 33.3°C, with the relationship of adult residence time and...
Abstract Two estimators of trends in Dendroctonus frontalis Zimmerman populations are evaluated. One estimator is brood increase ratio, R*, the brood beetles emerging per parent. The other is within-tree survival, S*, the brood beetles emerging per egg. The sampling...
Abstract Dispersal behavior of the southern pine beetle, Dendroctonus frontalis Zimmermann (Coleoptera: Scolytidae), in response to synthetic aggregating pheromone (frontalin) indicates an exponential decrease in response with distance from the site of emergence....