Featured Post from Louisiana State University

The Asian Needle Ant (Brachyponera chinensis) Found in Southern Louisiana

Moving Lines on the Map: The Asian Needle Ant Found in Southern Louisiana

Jun 6, 2025

3 min

In Louisiana, there are several ant species that are capable of stinging besides the red imported fire ant (Solenopsis invicta), such as the elongate twig ant (Pseudomyrmex gracilis), Comanche harvester ant (Pogonomyrmex comanche) and several species in the subfamily Ponerinae. The Asian needle ant (ANA) (Brachyponera chinensis) joins the list and has been confirmed in the state. Recent reports on the Asian needle ant by Mississippi State University extension entomologist, Santos J. Portugal and other urban entomologists in the region spurred the authors at Louisiana State University to investigate the presence of ANA in their state. By happenstance, two citizen scientists had reported sightings of the ant on iNaturalist at two Louisiana parks in August 2024 and June 2025. Therefore, on June 17, 2025, an LSU entomologist visited one of the parks to ground-truth the citing by collecting the ant, as he had prior experience with it. The Asian needle ant is a termite specialist, preferentially feeding on them, often living in close proximity with termite colonies and inside damp wood. To collect the ants, water-soaked wood was located in a forested area, broken open, revealing ANA, and they did not react aggressively to the disturbance. The ants immediately grabbed immature larva and retreated into crevices, not bothering the collectors at all. Upon retrieval, an LSU entomologist used a microscope at 40x to 60x magnification and the dichotomous key authored by MacGown (2003) to confirm that the collected specimens were ANA. It is important to verify the identity of invasive species submitted on citizen scientist projects as the images may not be of sufficient quality to get a positive identification.

The ANA was discovered in the U.S. in 1934 while individuals were researching Argentine ants (Linepithema humile). Since the introduction of the ANA, it has spread to many states within the U.S., ranging from Wisconsin to Texas to the east coast. ANAs are medium sized (about 5 mm long) and slender. The species originated from Asia. Queens are slightly larger (6.5 mm) and look similar in appearance to workers. ANAs are black to dark brown in coloration, with light brown legs, mandibles and antennae. To distinguish the ant from other look-alikes, ANA has a large single petiole node that extends above the thorax or alitrunk, and a shiny mesopluron on the side of the thorax.

ANA colonies are typically small in numbers, up to a few thousand individuals in large colonies. They are polygynous, meaning they have multiple queens. ANAs use a unique foraging behavior, where the worker carries another worker to a food resource, then drops off the worker to assist in food transport. ANAs do not form mounds, but instead nest in damp, high humidity areas, such as rotting logs, void spaces, under rocks and in leaf litter. They are typically found in forested areas. They also form multiple colonies within an area, which is called polydomy. ANAs swarm during the spring and early summer, although this time range may vary for Louisiana. People typically encounter the ants when they are working with wet wood or digging in moist soil. This is when someone may potentially be stung, although they are not aggressive. The sting is reported similar to that of a honeybee. Individuals who are allergic to stings may have a life-threatening anaphylactic response if stung by the ant, which requires medical attention. Wearing gloves is adequate protection from ANA stings while working with rotten wood or soil in infested areas. People who are sensitive to other insect stings should be aware of the potential for ANA stings and carry an approved rescue device for severe allergenic responses.

In addition to feeding on termites, the Asian needle ant will feed upon beetles, craneflies, springtails and native ants found in their preferred habitats. Because of their ability to prey upon native ants, they can impact native species that deposit seeds in the soil, thus reducing floral diversity. Therefore, ANA is capable of reducing both native animal and plant diversity in infested areas.

Article originally posted here.

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Aaron Ashbrook

Assistant Professor

Dr. Ashbrook's research focus primarily on cockroach and bed bug management.

Urban Pest ManagementPest ControlBiocontrolInsect BiologyInsecticide Resistance

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Jun 9, 2026

3 min

LSU Vet Med urges animal owners to be vigilant for New World screwworm

The LSU School of Veterinary Medicine is encouraging pet owners, livestock producers, horse owners, and veterinarians to remain vigilant following the recent detection of New World screwworm (NWS) confirmed cases in Texas and New Mexico. What is NWS? New World screwworm is a parasitic fly whose larvae, commonly known as maggots, feed on the living tissue of warm-blooded animals. Unlike most maggots that feed on dead tissue, screwworm larvae burrow into healthy flesh, causing painful wounds, severe infections, and, if left untreated, death. The pest can affect livestock, horses, wildlife, dogs, cats, and, in rare cases, people. Currently, there are no confirmed cases of New World screwworm in Louisiana, but awareness and early detection are critical. Animal owners should routinely inspect their animals for wounds and seek veterinary care immediately if they notice anything unusual. Government Response The U.S. Department of Agriculture and Texas animal health officials are actively responding to the detection through quarantines, surveillance, movement controls, and the release of sterile male screwworm flies to help stop the pest's spread. According to the Louisiana Department of Agriculture and Forestry, additional animal movement requirements are being implemented to reduce the risk of the pest entering Louisiana. These measures include enhanced health certificate requirements for certain animals entering the state from Texas, specifically lowering the validity of health certificates for animals entering Louisiana from 30 to seven days. Learn more at ldaf.la.gov. What to Look For Screwworm larvae most commonly enter through open wounds, surgical incisions, tick bites, the navels of newborn animals, or natural body openings such as the nose, ears, eyes, and genital regions. Animal owners should watch for: Wounds that fail to heal Bloody or foul-smelling discharge from wounds Visible maggots or egg masses in wounds or body openings Excessive licking, chewing, or irritation around a wound Signs of discomfort, depression, or reduced appetite There are currently no vaccines available to prevent New World screwworm. Rapid detection and response remain the most effective tools for preventing its spread. Diagnosis LSU Diagnostics (Louisiana Animal Disease Diagnostic Laboratory) is working with the Louisiana State Animal Health Officials (SAHO) for identification of all suspected cases. All confirmatory testing and reporting are being performed by the National Veterinary Services Laboratories, which will communicate results to the SAHO. What to Do if You Suspect NWS Animal owners who suspect New World screwworm should contact their veterinarian and the State Animal Health Official (SAHO) immediately at vetreports@ldaf.state.la.us or 225-925-3980. In Louisiana, the SAHO is Louisiana State Veterinarian Dr. Daniel Myrick (LSU 2001) with the Louisiana Department of Agriculture and Forestry. The public should be aware that New World screwworm does not affect the safety of the U.S. food supply. Federal inspection programs are designed to identify affected animals and prevent contaminated products from entering commerce. For more information about New World screwworm, visit Screwworm.gov or the LSU AgCenter webpage on NWS. About LSU Vet Med: Bettering lives through education, public service, and discovery The LSU School of Veterinary Medicine is one of only 33 veterinary schools in the U.S. and the only one in Louisiana. LSU Vet Med is dedicated to improving and protecting the lives of animals and people through superior education, transformational research, and compassionate care. We teach. We heal. We discover. We protect.

Mar 9, 2026

1 min

AI In Action Symposium

The AI In Action Symposium, hosted by the LSU E. J. Ourso College of Business, brings together expert voices at the heart of the AI revolution to explore how they have successfully navigated this evolving landscape. The 2026 symposium focuses on the practical implications of AI in business, including hiring AI-ready talent, ensuring responsible and ethical use, and exploring the challenges of implementing AI across both large enterprises and small startups. Speakers Attendees will hear from Louisiana leaders and national AI experts, including… Secretary Bruce Greenstein of the Louisiana Department of Health April Wiley, Senior Vice President at Community Coffee Robert Veit and Julian Tandler from Scale Team Six, a San Francisco-based business accelerator Dr. Tonya Jagneaux, who leads medical analytics at the Franciscan Missionaries of Our Lady Health System (FMOLHS) Hunter Thevis, president and co-founder of Lafayette-based S1 Technology …and many more! Details March 20, 2026, 8:00 a.m. – 1:00 p.m. Registration deadline is March 15. Held on the LSU A&M Campus, in the LSU Student Union Register at lsu.edu/business/ai-symposium Discount available for LSU System employees

Mar 2, 2026

2 min

War in Iran: Impact on Oil Prices

As global markets respond to escalating tensions in Iran, energy prices are once again at the center of international concern. For insight into what this conflict could mean for oil markets, consumers and the broader economy, media can turn to Greg Upton, executive director and associate research professor at the LSU Center for Energy Studies. An expert at the intersection of energy and environmental economics, Upton studies how geopolitical disruptions, supply constraints and policy decisions influence oil prices and downstream economic impacts. As instability in the Middle East threatens global supply chains, he can provide context on potential price volatility, implications for Louisiana’s energy sector and what higher crude prices may mean for gasoline costs and inflation in the United States. Upton has contributed to more than 40 academic publications and has presented his research to over 200 industry, government and academic audiences. He has testified before committees in both chambers of the Louisiana Legislature and a subcommittee of the U.S. House of Representatives. A frequent voice in national and local media, Upton has been quoted or cited more than 250 times, including by the The Wall Street Journal, The New York Times, USA Today and NPR. In addition to his research, Upton teaches in LSU’s MBA program and in the Department of Economics and Environmental Sciences, helping prepare the next generation of leaders to navigate complex energy and environmental challenges. For timely, data-driven analysis on the impact of oil price fluctuations amid the ongoing conflict in Iran, Dr. Greg Upton is available for interviews and expert commentary.