Research: Insect Behavior and Chemical Communication Systems. Current projects include: 1) Host Race Formation Among Southern Hawthorn-Infesting Populations of Rhagoletis pomonella (NSF) 2) Collaborative Research: Discrimination of Complex Mixtures in Olfactory Signaling (NSF), 3) Defining Key Grape Volatiles Used for Host Location as a Basis for assessing Phenology and Management of Grape Berry Moth (NRI), 4) Apple maggot Host Attractants (Washington Tree Fruit Research Commission).

Outreach/Education: Presentations on insect diversity to local elementary schools. Participation in Experiment Station tours for scientists, educators, politicians, etc.

Awards, Honors:
1971. President's Honor List and Alpha Gamma Sigma, Los Angeles Harbor College.
1973, 1974, California State University, Dominguez Hills, Who's Who Among Students in American Universities and Colleges.
1975 Long Beach State University, Phi Kappa Phi.
1976 Long Beach State university, Biology Dept. Certificate of Recognition for Academic Excellence
1977, 1978, Graduate Research Assistantship, University of California, Riverside.
1979, Sigma Xi, UC Riverside

Societies:
Entomological Society of America
Society for Neurosciences
Association for Chemoreception Sciences
Phi Kappa Phi

Henry Facundo 2000, Ph. D.
Paul Robbins 2005, Ph. D.
Shannon Bice Olsson 2005, Ph. D.

Publications:

• Linn CE Jr., Musto C, and Roelofs WL. 2007. More rare males in Ostrinia: Response of Asian corn borer moths to the sex pheromone of the European corn borer. J. Chem. Ecol. 33: 199-212.
  
  
• Vickers, N., K. Poole, and Linn CE Jr. 2005. Plasticity in central olfactory processing and pheromone blend discrimination following inter-species antennal imaginal disc transplantation. J. of Comp. Neurol. 491:141-156.
  
  
• Linn CE Jr., Dambroski HR, Feder JF, Berlocher SH, Nojima S, and Roelofs WL. 2004. Postzygotic isolating factor in sympatric speciation in Rhagoletis Flies: Reduced response of hybrids to parental host-fruit odors. Proc. Natl. Acad. Sci. USA., 101: 17753-17758.
  
  
• Linn, C. Jr., Feder, J. L., Nojima, S., Dambroski, H. R., Berlocher, S. H., and Roelofs, W. L.  2003.  Fruit Odor Discrimination and Sympatric Host Race Formation in Rhagoletis.  Proc. Natl. Acad. Sci. USA. 100: 11490-11493.
  
  
• Vickers, N., K. Poole, and C. Linn, Jr. 2003.  Consequences of Inter-species Antennal Imaginal Disc Transplantation on Organization of Olfactory Glomeruli and Pheromone Blend Discrimination.  J. of Comp. Neurol. 466: 377-388. 
  
  
• Nojima, S., C. Linn Jr., A. Zhang, B Morris, and W. Roelofs. 2003.  Identification of host fruit volatiles from hawthorn (Crategous spp.) attractive to hawthorn-origin Rhagoletis pomonella flies.  J. Chem. Ecol.  29: 319-354.
  
  
• Facundo, H. T., M. G. Villani, C. E. Linn Jr., and W. L. Roelofs. 1999.  Temporal and spatial distribution of the oriental beetle, Exomala orientalis  (Coleoptera: Scarabaeidae) in a golf course environment. Environ. Entomol. 28: 14-21.
  
  
• Linn, C.E., M.G. Campbell, K. R. Poole, W.-Q. Wu, and W. L. Roelofs. 1996. Effects of photoperiod on the circadian timing of pheromone response in male Trichoplusia ni: Relationship to the modulatory action of octopamine. J. Insect Physiol. 42: 881-891.
  
  
• Linn, C. E., Jr. and W. L. Roelofs.  1995.  Pheromone communication in the moths and its role in the speciation process.  In  "Speciation and the recognition concept: Theory and application" (ed. D. H.. Lambert and H. Spencer). Baltimore and London: Johns Hopkins University Press. 1995. 263-300.