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Department of Entomology

University of Arkansas Forest Entomology

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Welcome to the University of Arkansas Forest Entomology web page. Our lab members have worked on a variety of projects over the years, but the overarching theme is forest insect ecology. Our current research projects include 1) Monitoring and assessment of Ips bark beetle populations in the southeast, 2) Sirex nigricornis ecology and life table development, and 3) Monochamus wood borers; trapping, ecology, and role in bark beetle populations. Previous research projects have examined ecology of red oak borers in oak-hickory forests; southern pine beetle population dynamics, host resistance and role of natural enemies. Additional research has targeted impacts of gypsy moth eradication on non-target insects and birds, Nantucket pine tip moth, Pales weevil and periodical cicadas.

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The latest headlines...

April 24-25, 2014: The lab attended the annual East Texas Forest Entomology Seminar in Lufkin, TX.

  • Galligan, L.D., Barton, C.S., Clarke S.R., Dalzotto, D.J., Smith, J.D., and F.M. Stephen. Monitoring Ips populations and assessing their impact on pine mortality through trapping and roadside surveys. East Texas Forest Entomology Seminar, Lufkin, Texas. April 2014.

  • Hartshorn, J.A., and F.M. Stephen. Sirex nigricornis F. (Hymenoptera: Siricidae) flight patterns in Arkansas. East Texas Forest Entomology Seminar, Lufkin, Texas. April 2014.

  • Rastok, R., Galligan, L.D., and F.M. Stephen. Intraspecific competition among longhorned beetles, Monochamus titillator. East Texas Forest Entomology Seminar, Lufkin, Texas. April 2014.

March 2-5, 2014: Dr. Fred Stephen and Jessica Hartshorn attended the Entomological Society of America, Southeastern Branch meeting in Greenville, South Carolina.

  • Hartshorn, J.A., and F.M. Stephen. Comparing flight patterns of the native woodwasp, Sirex nigricornis F., with Sirex noctilio F., a non-native threat to southeastern pine stands. Entomological Society of America, Southeastern Branch, Greenville, SC. March 2014.

January 7-10, 2014: Dr. Fred Stephen and Jessica Hartshorn attended the USDA Interagency Forum on Invasive Species in Annapolis, Maryland.

  • Hartshorn, J.A., Galligan, L.D., Dalzotto, D.J., and F.M. Stephen. Creation and validation of a degree-day model for Sirex nigricornis F. (Hymenoptera: Siricidae) in Arkansas. USDA Interagency Forum on Invasive Species, Annapolis, MD. January 2014.

November 10-13, 2013: The lab attended the Entomological Society of America annual 2013 meeting in Austn, Texas.

  • Hartshorn, J.A., and F.M. Stephen. Emergence patterns of Sirex nigricornis F. (Hymenoptera: Siricidae) in Arkansas. ESA, Austin, TX. November 2013.

  • Rastok, R., and F.M. Stephen. Intraspecific competition in the southern pine sawyer, Monochamus titillator (Fabricius): Effects of oviposition density and phloem thickness. ESA, Austin, TX. November 2013.

October 14-16, 2013: Dr. Fred Stephen and Jessica Hartshorn attended the first ever Sirex Symposium in Ithaca, New York.

  • Hartshorn, J.A., Galligan, L.D., and F.M. Stephen. Sirex phenology in Arkansas. Sirex Symposium, Ithaca, NY. October 2013.

October 4-5, 2013: Jessica Hartshorn attended the Arkansas Entomological Society Meeting 2013 in Magnolia, Arkansas.

  • Hartshorn, J.A., Galligan, L.D., and F.M. Stephen. Current Sirex Research in Arkansas. Arkansas Entomological Society Meeting, Magnolia, AR. October 2013.

August 2013: The lab welcomes Matthew Ethington as the newest Master's graduate student.

July 23-26, 2013: The lab attended the Southern Forest Insect Work Conference annual meeting in New Orleans, Louisiana.

  • Barton, C.S., Galligan, L.D., Clarke S.R., Smith, J.D., and F.M. Stephen. Monitoring Ips populations and correlating their association with pine mortality. SFIWC, New Orleans, LA. July 2013.

  • Hartshorn, J.A., Galligan, L.D., Dalzotto, D.J., and F.M. Stephen. Oviposition and larval development of Sirex nigricornis F. in Arkansas. SFIWC, New Orleans, LA. July 2013.

  • Rastok, R., Galligan, L.D., and F.M. Stephen. Design and evaluation of live traps for Monochamus species, other bark, and wood boring insects and estimation of egg load in field-collected adults. SFIWC, New Orleans, LA. July 2013.

April 25-26, 2013: The lab attended the 40th Anniversary East Texas Forest Entomology Seminar in Lufkin, TX.

  • Stephen, F.M. Where are we and where are we headed with Forest Entomology at the University of Arkansas. East Texas Forest Entomology Seminar, Lufkin, Texas. April 2013.

March 3-6, 2013: The lab attended the 2013 Southeastern Branch Annual Meeting of the Entomological Society of America in Baton Rouge, Louisiana.

  • Hartshorn, J.A., Dalzotto, D.J., and F.M. Stephen. Comparing the efficacy of morphological characteristics in the identification of Monochamus titillator and M. carolinensis (Coleoptera: Cerambycidae). Southeastern Branch Annual Meeting of Entomological Society of America, Baton Rouge, Louisiana. March 2013.

January 8-11, 2013: The lab attended the 24th USDA Interagency Research Forum on Invasive Species in Annapolis, Maryland.

  • Hartshorn, J.A., Keeler, D.M., Lynn-Miller, A.J., Galligan, L.D., and F.M. Stephen. Life history, oviposition preferences, and incidence of nematodes of Sirex nigricornis. 24th USDA Interagency Research Forum on Invasive Species, Annapolis, Maryland. January 2013.

December 2012: A new publication by former student Dr. Laurel Haavik has been accepted to Environmental Entomology.

  • Haavik, L.J., D.J. Crook, M.K. Fierke, L.D. Galligan, and F.M. Stephen. Partial life tables from three generations of Enaphalodes rufulus (Coleoptera: Cerambycidae). Environmental Entomology 41 (6): 1311-1321. 2012. (PDF)

November 2012: The lab would like to congratulate Ace Lynn-Miller on completing his Master's thesis!

  • Lynn-Miller, Ace J. Effects of associated subcortical beetles on oviposition behavior and early-stage survival of Sirex nigricornis F. (Hymenoptera: Siricidae). MS thesis. University of Arkansas, Fayetteville, 2012. (Thesis)

November 11-14, 2012: The lab attended the Entomological Society of America's 60th annual meeting in Knoxville, TN.

  • Barton, C.S., Galligan, L.D., Stephen, F.M., Clarke S.R., and J.D. Smith. Identifying and evaluating pine mortality associated with Ips spp. in Arkansas, Texas, and Louisiana. Entomological Society of America, Knoxville, TN. November 2012.

  • Hartshorn, J.A. and F.M. Stephen. Oviposition preferences of female Sirex nigricornis F. (Hymenoptera:Siricidae) in relation to differing moisture contents of Pinus echinata. Entomological Society of America, Knoxville, TN. November 2012.

October 26, 2012: Congratulations to Ace Lynn-Miller for defending his Master's project!

October 2012: The lab would like to congratulate Jessica Hartshorn on completing her Master's thesis!

  • Hartshorn, Jessica A. Effects of felled shortleaf pine (Pinus echinata MILL.) moisture loss on oviposition preferences and survival of Sirex nigricornis F. (Hymenoptera: Siricidae). MS thesis. University of Arkansas, Fayetteville, 2012. (Thesis)

October 5, 2012: The lab attended the Arkansas Entomological Society annual AES meeting in Fayetteville.

  • Barton, C.S. and F.M. Stephen. Strategies for monitoring the impact of Ips bark beetles in the southeast U.S. Arkansas Entomological Society, Fayetteville, AR. October 2012.

  • Hartshorn, J.A. and F.M. Stephen. Sirex research in Arkansas. Arkansas Entomological Society, Fayetteville, AR. October 2012.

October 4, 2012: The lab participated in the 13th Arkansas Insect Festival at the Pauline Whitaker Animal Science Center in Fayetteville.

September 7, 2012: Congratulations to Jessica Hartshorn for defending her Master's project!

August 20, 2012: The lab welcomes Ryan Rastok as the newest Master's graduate student.

August 20, 2012: The lab welcomes Jessica Hartshorn as the newest Ph.D. graduate student.

August 5-12, 2012: Jessica Hartshorn attended a Hymenoptera short-course at the Tovetorp Zoological Research Station in Sweden.

August 2012: The lab would like to congratulate Danielle Keeler on completing her Master's thesis!

  • Keeler, Danielle M. Flight period and species composition of Sirex (Hymenoptera: Siricidae) and associated Deladenus (Nematoda: Neotlenchidae) within Arkansas pine forests. MS thesis. University of Arkansas, Fayetteville, 2012. (Thesis)

April 26-27, 2012: The lab attended the East Texas Forest Entomology Seminar in Nacogdoches, Texas.

  • Barton, C.S., Galligan, L.D., Clarke, S.R., Smith, J.D., and F.M. Stephen. Monitoring and evaluation of pine Curculionid populations in southern pine forests. East Texas Forest Entomology Seminar, Nacogdoches, TX. April 2012.

  • Hartshorn, J.A., Galligan, L.D., Dalzotto, D.J., and F.M. Stephen. Oviposition patterns of Sirex nigricornis (Hymenoptera: Siricidae) in response to differing moisture contents in pine. East Texas Forest Entomology Seminar, Nacogdoches, TX. April 2012.

  • Lynn-Miller, A.J.W., Galligan, L.D., Dalzotto, D.J., and F.M. Stephen. The effects of subcortical pine-colonizing insects on oviposition and early stage survival of Sirex nigricornis. East Texas Forest Entomology Seminar, Nacogdoches, TX. April 2012.

April 19, 2012: Jessica Hartshorn was awarded as the Department of Entomology Outstanding M.S. Student at the Bumpers College Honors and Awards Banquet.

April 16, 2012: Congratulations to Danielle Keeler for defending her Master's project!

March 14, 2012: Jessica Hartshorn won first place for her oral paper presentation at the Gamma Sigma Delta, Arkansas Chapter (Honor Society of Agriculture) student research competition.

  • Hartshorn, J.A. and F.M. Stephen. Moisture content of pine logs and its effects on oviposition behavior of Sirex nigricornis F. (Hymenoptera:Siricidae). Gamma Sigma Delta, Arkansas Chapter. Fayetteville, AR. March 2012. (Abstract)

March 8, 2012: A new publication by former student Dr. Laurel Haavik has been accepted to Forestry: An International Journal of Forest Research.

  • Haavik, L.J., Jones, J.S., Galligan, L.D., Guldin, J.M., and F.M. Stephen. Oak decline and red oak borer outbreak: impact in upland oak-hickory forests of Arkansas, USA. Forestry, doi:10.1093/forestry/cps032. 2012. (PDF)

March 4-7, 2012: The lab attended the Southeastern and Southwestern Joint Branch meeting for the Entomological Society of America (ESA) in Little Rock, Arkansas.

  • Barton, C.S. and F.M. Stephen. Rediscovering the deodar weevil and its potential as a mortality factor in intensively managed Arkansas pine forests. Entomological Society of America, Southeastern Branch. Little Rock, AR. March 2012. (Poster)

  • Hartshorn, J.A. and F.M. Stephen. Moisture content in pine logs and its effects on oviposition behavior of Sirex nigricornis. Entomological Society of America, Southeastern Branch. Little Rock, AR. March 2012. (Abstract)

  • Lynn-Miller, A.J. and F.M. Stephen. Oviposition response of Sirex nigricornis to Ips-colonized bolts. Entomological Society of America, Southeastern Branch. Little Rock, AR. March 2012. (Abstract)

February 7, 2012: Jessica Hartshorn was awarded the Isely-Dupont Entomology Scholarship for Outstanding Masters Student. Ace Lynn-Miller was awarded the Jake R. Phillips Scholarship.

January 10-13, 2012: The lab attended the 23rd USDA Interagency Research Forum on Invasive Species in Annapolis, Maryland.

  • Hartshorn, J.A. and F.M. Stephen. Effects of log moisture content on the oviposition behavior of Sirex nigricornis (Hymenoptera: Siricidae). USDA Interagency Forum on Invasive Species. Annapolis, MD. January 2012. (Poster)

  • Lynn-Miller, A.J., Galligan, L.D., and F.M. Stephen. Oviposition response of Sirex nigricornis to Ips colonized bolts. USDA Interagency Forum on Invasive Species. Annapolis, MD. January 2012. (Poster)

December 2011: Dr. Fred Stephen published three chapters on southern pine beetle population dynamics and biological control in Southern Pine Beetle II.

  • Stephen F.M. and C.W. Berisford. Biological control of southern pine beetle. Chapter 28, pp 415-427. In Southern pine beetle II. (ed. by R.N. Coulson & K.D. Klepzig). USDA Forest Service. Gen. Tech. Rep. SRS-140. Asheville, NC, 512 p. 2011. (Link)

  • Stephen F.M. Southern pine beetle competitors. Chapter 12, pp 183-198. In Southern pine beetle II. (ed. by R.N. Coulson & K.D. Klepzig). USDA Forest Service. Gen. Tech. Rep. SRS-140. Asheville, NC, 512 p. 2011. (Link)

  • Stephen F.M. Southern pine beetle population dynamics in trees. Chapter 4, pp 51-74. In Southern pine beetle II. (ed. by R.N. Coulson & K.D. Klepzig). USDA Forest Service. Gen. Tech. Rep. SRS-140. Asheville, NC, 512 p. 2011. (Link)

November 2011: Dr. Fred Stephen was awarded an Entomological Society of America Fellow for his lifetime achievement in Entomology.

November 13-16, 2011: The lab attended ESA's 59th Annual Meeting in Reno, Nevada.

  • Hartshorn, J.A. and F.M. Stephen. Effects of tree condition on oviposition behavior of Sirex nigricornis (Hymenoptera: Siricidae). Entomological Society of America. Reno, NV. November 2011. (Abstract)

  • Lynn-Miller, A.J.W. and F.M. Stephen. Factors affecting realized fecundity and offspring fitness of Arkansas Sirex. Entomological Society of America. Reno, NV. November 2011. (Abstract)

September 2011: Ace Lynn-Miller was awarded the Lloyd and Ruby Warren Scholarship for service and leadership.

August 2011: The lab welcomes Chandler Barton as the newest Master's graduate student.  His current project is on Pissodes weevils.  Beginning Spring 2012, his research is focused on Ips monitoring.

May 9-12, 2011: The lab attended the North American Forest Insect Work Conference (NAFIWC) in Portland, Oregon.

  • Hartshorn, J.A., Lynn-Miller, A.J., Galligan, L.D., and F.M. Stephen. Biology and oviposition patterns of Arkansas Sirex. North American Forest Insect Work Conference. Portland, OR. May 2011. (Poster)

  • Lynn-Miller, A.J., Galligan, L.D., Hartshorn, J.A., and F.M. Stephen. Sirex nigricornis oviposition: responses to bark thickness. North American Forest Insect Work Conference. Portland, OR. May 2011. (Poster)

March 19-22, 2011: The lab attended the Southeastern Branch meeting for ESA in San Juan, Puerto Rico.

  • Hartshorn, J.A., Lynn-Miller, A.J., Galligan, L.D., and F.M. Stephen. Oviposition behavior of Arkansas Siricidae (Sirex species) in the presence and absence of potential predators. Entomological Society of America, Southeast Branch, San Juan, Puerto Rico. March 2011. (Poster)  

 


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