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David Hall
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David G. Hall, Ph.D.
Research Leader / Entomologist


U. S. Horticultural Research Laboratory
2001 South Rock Road
Fort Pierce, FL 34945
Telephone: (772) 462-5897
Fax: (772) 462-5986

Current Research Projects:

Dr. Hall develops integrated pest management technologies for plant-eating insects and mites through research in such areas as insect ecology; biological control; plant resistance; sampling methodology; and quantitative research on damage by pests. His research programs have emphasized augmentation biological control, sampling procedures and economic assessments of pest damage. Dr. Hall works primarily with citrus, vegetable and ornamental insect problems under USDA-ARS National Program 304, Crop Protection and Quarantine. Prior to joining the Subtropical Insect Research Unit in 2003, Dr. Hall worked for private industry conducted researching on integrated pest management of citrus and sugarcane insects in and around the Florida Everglades Agricultural Area. His team research activities involve collaboration and cooperation with other research units at the U.S. Horticultural Research Laboratory as well as university, regulatory and other federal agencies both nationally and internationally.

Selected Publications:

  • Hall, D. G., C. C. Childers, and J. E. Eger. 1991. Estimating citrus rust mite (Acari: Eriophyidae) levels on fruit in individual citrus trees. Environ. Entomology. 20:382-390
  • Hall, D. G. 1992. Sampling the citrus red mite and the Texascitrus mite in young orange trees. Proc.Fla.StateHort. Soc. 105:42-46
  • Hall, D. G., C. C. Childers, and J. E. Eger. 1994. Spatial dispersion and sampling of the citrus rust mite in 'Hamlin' and 'Valencia' orange trees. J. Econ. Entomol. 87:687-698
  • Hall, D. G., C. C. Childers, J. E. Eger and J. Allen. 1997. Citrus rust mite counts and the negative binomial distribution. Fla.Entomol. 80 (1): 1-10
  • Shapiro, J. P., D. G. Hall and R. P. Niedz. 1997. Mortality of the larval root weevil Diaprepes abbreviatus L. ((Coleoptera: Curculionidae) in simulated flooding. FloridaEntomologist. 80 (2): 277-285
  • Hall, D. G., J. Pena, R. Franqui, R. Nguyen, P. Stansly, C. McCoy, S. L. Lapointe, R. C. Adair and B. Bullock. 2001. Status of biological control by egg parasitiods of Diaprepes abbreviatius (Coleoptera: Curculiondae) in citrus in Floridaand Puetro Rico. BioControl 46; 61-70
  • Hall, D. G., J. E. Eger, J. Pena, R. Duncan, R. Nguyen, C. O'Brian, G. Evans, and C. McCoy. 2002. Exploration in Belizefor parasitoids attacking eggs of citrus weevils, and an evaluation of Pediobius irregularis and Horismenus bennetti (Hymenoptera: Eulophidae) as potential biological control agents of Diaprepes abbreviatus and Pachnaeus litus (Coleoptera: Curculionidae). FloridaEntomol. 85: 660-663
  • Nigg, H. N., S. E. Simpson, D. G. Hall, L. E. Ramos, S. U. Rehman, B. Bas and N. Cuyler. 2002 Sampling methods as abundance indices for adult Diaprepes abbreviatus (Coleoptera: Curculiondae) in citrus. Journ. Econ. Entomol. 94: 856-861
  • Hall, D. G. and M. K. Simms. 2003. Damage by the Texasspider mite, Eutetranychus banksi (McGregor) (Acari: Tetranychidae) to 'Valencia' leaves in an irrigrated citrus grove. FloridaEntomol. 86 (1): 15-28
  • Castillo, J., J. A. Jacas, J. E. Pena, B. J. Ulmer and D. G. Hall.  2005. Effect of temperature on life history of Quadrastichus haitiensis(Hymenoptera: Eulophidae), an endoparasitoid of Diaprepes abbreviatus(Coleoptera:  Curculionidae).  Biological Control.  36:  189-196
  • Hall, D. G., R. Meagher, R. Nagoshi, M. Irey. 2005. Monitoring populations of adult fall armyworm, Spodoptera fruigiperda Smith(Lepidoptera:Noctuidae), in Floridasugar cane using pheromone traps, with special reference to genetic strains of the pest.  Proc. International Soc. Sugar Cane Technol. 25: 784-786
  • Hall, D. G., Carl C. Childers, Joseph E. Eger.  2005. Effects of Reducing Sample Size on Density Estimates of Citrus Rust Mite (Acari: Eriophyidae) on Citrus Fruit; Simulated Sampling. J. Econ. Entomol. 98(3) 1048-1057
  • Hall, D. G., R. E. Burns, C. C. Jenkins, K. L. Hibbard, D. L. Harris, J. M. Sivinski and H. N. Nigg.  2005.  A field comparison of chemical attractants and traps for Caribbean fruit fly, Anastrepha suspensa(Loew) (Diptera: Tephritidae), in Floridacitrus.  J. Econ. Entomol.  98(5): 1641-1647  
  • Boykin, L. M., R. G. Shatters, Jr., D. G. Hall, R.E. Burns and R.A. Franqui.  2006.  Analysis of host preference and geographical distribution of Anastrepha suspensa(Diptera:  Tephritidae) using phylogenetic analyses of mitochondrial cytochrome oxidase I DNA sequence data.  Bull. Entomol. Res.  96: 1-13
  • Lapointe, D. L., C. L. McKenzie and D. G. Hall.  2006.  Reduced oviposition by Diaprepes abbreviatus(L.) (Coleoptera:  Curculionidae) and growth enhancement of citrus by Surround particle film.  Journ. Econ. Entomol. 99: 109-116 
  • Lapointe, S. L., D. G. Hall, Y. Murata, A. L. Parra-Pedrazzoli, J. Bento, E. Vilela and W. Leal.  2006.  Field evaluation of a synthetic female sex pheromone for the leafmining moth Phyllocnistis citrella (Lepidoptera: Gracillariidae) in Floridacitrus.  Fla.Entomol.  89:  274-276 
  • Nagoshi, R. N., R. L. Meagher, G. Nuessley, and D. G. Hall.  2006. Effects of fall armyworm (Lepidoptera: Noctuidae) interstrain mating in wild populations.  Environ. Entomol. 35: 561-568
  • Boykin, L. M., R. A. Bagnall, D. R. Frohlich, D. G. Hall,W. B. Hunter, C. S. Katsar, C. L. McKenzie, R. C. Rosell, and R. G. Shatters, Jr.  2007.  Twelve polymorphic microsatellite loci from the Asian Citrus Psyllid, Diaphorina citriKuwayama, the vector for citrus greening disease, Huanglongbing.  Molecular Ecol. Notes. 7: 1202-1204  [PDF]
  • Hall, D. G., C. C. Childers and J. E. Eger.  2007.  Binomial sampling to estimate citrus rust mite densities on orange fruit.  J. Econ. Entomol. 100:  233-240   [PDF]
  • Hall, D. G., Albrigo, L. G.  Estimating the Relative Abundance of Flush Shoots in Citrus with Implications on Monitoring Insects Associated with Flush.  2007.  HortScience 42(2):364-368  [PDF]
  • Hall, D. G., S. L. Lapointe and E. J. Wenninger.  2007.  Effects of a particle film on biology and behavior of Diaphorina citri (Hemiptera: Psyllidae) and its infestations in citrus.  J. Econ. Entomol. 100: 847-854   [PDF]
  • Hall, D. G., M. G. Hentz and M. A. Ciomperlik.  2007.  A comparison of traps and stem tap sampling for monitoring adult Asian citrus psyllid (Hemiptera: Psyllidae) in citrus.  Fla. Entomol. 90:  327-334  [PDF]
  • Lapointe, S. L., D. M. Borchert and D. G. Hall.  2007.  Effect of low temperatures on mortality and oviposition in conjunction with climate mapping to predict spread of the root weevil Diaprepes abbreviatus and its introduced parasitoids.  Environ. Entomol. 36: 73-82
  • Wenninger, E. and D. G. Hall. 2007.  Daily timing of and age at mating in Diaphorina citri(Hemiptera: Psyllidae).  Fla. Entomol. 90: 715-722    [PDF]
  • Hall, D. G., A. Roda, S. L. Lapointe, and K. Hibbard.  2008.  Phenology of Maconellicoccus hirsutus(Green) (Hemiptera: Pseudococcidae) in Floridabased on attraction of adult males to pheromone traps.  Fla.Entomol. 91:  305-310  [PDF]
  • Hall, D. G. and W.B. Hunter.  2008.  Populations of sharpshooters in two citrus groves in east-central Floridaas indicated by yellow sticky card traps. Fla.Entomol. 91:  488-490  [PDF]
  • Hall, D. G., M. G. Hentz and R. C. Adair.  2008.  Population ecology and phenology of Diaphorina citriin two Florida citrus groves.  Environ. Entomol. 37:  914-924  [PDF]
  • Hall, D. G. 2008. Biology, history and world status of Diaphorina citri, pp. 11, I Taller Internacional sobre Huanglongbing de los c?tricos (Candidatus Liberibacter spp) y el ps?lido asi?tico de los c?tricos (Diaphorina citri), Hermosilla, Sonora, Mexico, May 8.  [PDF]
  • Hall, D. G. 2008. Biological control of Diaphorina citri, pp. 7, I Taller Internacional sobre Huanglongbing de los c?tricos (Candidatus Liberibacter spp) y el ps?lido asi?tico de los c?tricos (Diaphorina citri), Hermosillo, Sonora, Mexico, May 8.  [PDF]
  • Setamou, M., D. Flores, J. V. French, and D. G. Hall. 2008.  Dispersion patterns and sampling plans for Diaphorina citri(Hemiptera: Psyllidae) in Citrus.  J. Econ. Entomol.  101: 1478-1487  [PDF]
  • Wenninger, Erik  J. and David G. Hall.  2008.  Importance of multiple mating to female reproductive output in Diaphorina citri.  Physiol. Entomol. 33:  316-321  [PDF]
  • Wenninger, E. J. and D. G. Hall.  2008. Daily and seasonal dynamics in abdomen color in Diaphorina citri(Hemiptera: Psyllidae).  Annals Entomol. Soc. America. 101: 585-595  [PDF
  • Hall, D. G., and M. G. Hentz. 2010.Sticky trap and stem-tap sampling protocols for the Asian citrus psyllid (Hemiptera: Psyllidae). Journal of Economic Entomology 103: 541-549.  [PDF]
  • Hall, D. G., R. G. Shatters, J. E. Carpenter and J. P. Shapiro.  2010. Progress toward an artificial diet for adult Asian citrus psyllid.  Ann. Entomol. Soc. Amer.  103:  611-617.  [PDF]
  • Hall, D. G. and R. Nguyen.  2010. Toxicity of pesticides to Tamarixia radiata, a parasitoid of the Asian citrus psyllid. BioControl. Online first:  1 - 10  [PDF]
  • Hall, D. G., and G. McCollum.  2011. Survival of adult Asian citrus psyllid on harvested citrus fruit and leaves.  Fla. Entomol.  94: 1094-1096 
  • Westbrook, C. J., D. G. Hall, E. W. Stover, Y. P. Duan and R. F. Lee.  2011. Colonization of Citrus and Citrus-related germplasm by Diaphorina citri (Hemiptera: Psyllidae).  HortScience. 46 (7): 997-1005.
  • Hall, D. G., M. G. Hentz, J. M. Meyer, and D. G. Boucias.  2012.  Observations on the entomopathogenic fungus Hirsutella citriformis attacking adult Diaphorina citri (Hemiptera: Psyllid) in a managed citrus grove.  BioControl.  DOI 10.1007/s10526-012-9448-0  [PDF]
  • Walter, A. J., Y.-P. Duan, and D. G. Hall.  2012. Titers of 'Candidatus Liberibacter asiaticus' in Murraya paniculata and Murraya-reared Diaphorina citri are much lower than in Citrus and Citrus-reared psyllids.  HortScience. 47: 1449-1452.
  • Walter, A. J., D. G. Hall, and Y.-P. Duan.  2012. Low Incidence of Candidatus Liberibacter asiaticus in Diaphorina citri and its host plant Murraya paniculata.  Plant Disease. 96: 827-832. 
  • Ammar, E. D., A. J. Walter, and D. G. Hall.  2013.  A New excised-leaf assay method to test the inoculativity of the Asian citrus psyllid with Candidatus Liberibacter asiaticus associated with citrus huanglongbing disease.  J. Econ. Entomol. 106: 25-35. 
  • Hall, D. G., M. L. Richardson, E. D. Ammar, and S. E. Halbert.  2013.  Asian citrus psyllid, Diaphorina citri (Hemiptera:  Psyllidae), vector of citrus huanglongbing disease.  Entomologia Experimentalis et Applicata. 146: 207-223. 
  • Hall, D. G., and M. L. Richardson.  2013. Toxicity of insecticidal soaps to the Asian citrus psyllid (Diaphorina citri) and two of its natural enemies.  J. Applied. Entomol. 137:  347-354.
  • Hall, D. G., T. R. Gottwald, E. Stover and G. A. C. Beattie.  2013.  Evaluation of management programs for protecting young citrus plantings from huanglongbing.  HortScience.  48:  330-337. 
  • Richardson, M. L., and D. G. Hall.  2013. Toxicity of six miticides to the Asian citrus psyllid, Diaphorina citri (Hemiptera: Psyllidae).  Fla. Entomol. 96: 433-441. 
  • Richardson, M. L., and D. G. Hall.  2013. Resistance of Poncirus and Citrus x Poncirus germplasm to the Asian citrus psyllid.  Crop Science.  53: 183-188.
  • Albrecht, U., D. G. Hall, and K. D. Bowman.  2014. Transmission efficiency of Candidatus Liberibacter asiaticus and progression of Huanglongbing disease in graft- and psyllid-inoculated citrus.  HortScience. 49:  367-377. 
  • Hall, D. G. and M. G. Hentz.  2014. Asian citrus psyllid (Diaphorina citri) tolerance to heat.  Annals of the Entomological Society of America. 107:  641-649. 
  • Hall, D. G.  2014. Interference by western flower thrips in rearing Asian citrus psyllid:  damage to host plants and facultative predation.  Crop Protection. 60: 66-69.  
  • Hall, D. G. and E. M. Klein. 2014. Survival of adult Tamarixia radiata subjected to different short-term storage methods prior to field releases for biological control of Asian citrus psyllid.  Fla. Entomol. 97:  298-300. Pitino, M., M. T.
  • Pitino, M., M. T. Hoffman, L. Zhou, D. G. Hall, I. C. Stocks, and Y.-P. Duan. 2014. The phloem-sap feeding mealybug (Ferrisia virgata) carries ‛Candidatus Liberibacter asiaticus’ populations that does not cause disease in host plants. Plos One. 9(1): e85503. doi:10.1371/journal.pone.0085503
  • Ammar, E. D., M. L. Richardson, A. Zaid, D. G. Hall, and R. G. Shatters. 2014. Differences in stylet sheath occurrence and the fibrous ring (sclerenchyma) between xCitroncirus plants relatively resistant or susceptible to adults of the Asian citrus psyllid Diaphorina citri (Hemiptera: Liviidae). Plos One. 9 (10): e110919.
  • Ammar, E. D., D. G. Hall, and J. M. Alvarez. 2015. Effect of cyantraniliprole, a novel insecticide, on the inoculation of Candidatus Liberibacter asiaticus associated with citrus huanglongbing by the Asian citrus psyllid (Hemiptera: Liviidae). J. Econ. Entomol. 1-6. [PDF]
  • Jenkins, D. A., D. G. Hall, and R. Goenaga. 2015. Diaphorina citri (Hemiptera: Liviidae) abundance in Puerto Rico declines with elevation. J. Econ. Entomol. 108: 252-258. [PDF]
  • Ammar, E. D., D. G. Hall, and R. G. Shatters. 2015. Ultrastructure and development of the new stylets inside pre-molting first instar nymphs of the Asian citrus psyllid Diaphorina citri (Hemiptera: Liviidae). Fla. Entomol. 98: 373-376.
  • Keremane, M. L., C. Ramadugu, E. Rodriguez, R. Kubota, S. Shibata, D. G. Hall, M. Roose, D. Jenkins, and R. F. Lee. 2015. A rapid field detection system for citrus huanglongbing associated ‘Candidatus Liberibacter asiaticus’ from the psyllid vector, Diaphorina citri Kuwayama and its implications in disease management. Crop Protection. 68: 41-48.
  • Hall, D. G., J. George and S. L. Lapointe. 2015. Further investigations on colonization of Poncirus trifoliata by the Asian citrus psyllid. Crop Protection. 72: 112-118. [PDF]
  • Hall, D. G. and E. Rohrig. 2015. Bionomics of Asian citrus psyllid (Hemiptera: Liviidae) associated with orange jasmine hedges in southeast central Florida, with special reference to biological control by Tamarixia radiata. J. Econ. Entomol. 108: 1198-1207. [PDF]
  • Ramsey, J. S., R. Johnson, J. Hoki, J. Mahoney, M. Hilf, W. Hunter, D. G. Hall, F. Schroeder, M. MacCross, and M. Cilia. 2015. Metabolic Interplay between the Asian citrus psyllid and its Profftella symbiont: An Achilles’ heel of the citrus greening insect vector. Plos One. 10 (11): e0140826. DOI:10:1371/journal.pone.0140826.
  • Hall, D. G., M. G. Hentz, and J. M. Patt. 2015. Behavioral assay on Asian citrus psyllid attraction to orange jasmine. J. Insect Behavior. 28: 555-568. [PDF]
  • Silva, J. A. A., D. G. Hall, T. R. Gottwald, M. S. Andrade, W. Maldonado, Jr., R. T. Alessandro, S. L. Lapointe, E. C. Andrade, and M. A. Machado. 2016. Repellency of Psidium guajava cultivars to the Asian citrus psyllid, Diaphorina citri. Crop Protection. 84: 14-20.
  • Hall, D. G., U. Albrecht, and K. D. Bowman. 2016. Transmission rates of ‘Ca. Liberibacter asiaticus’ by Asian citrus psyllid are enhanced by the presence and developmental stage of citrus flush. J. Econ. Entomol. 109: 558-563. [PDF]
  • Hall, D. G., and M. G. Hentz. 2016. An evaluation of plant genotypes for rearing Asian citrus psyllid (Hemiptera: Liviidae). Fla. Entomol. 99: 471-480. [PDF]