New Mexico State University’s Cooperative Extension Service is taking a proactive step to protect the state’s livestock, wildlife and pets. The university has published a free, illustrated guide that explains the biology and identification of the New World screwworm fly, a parasite that can cause serious infestations in animals.

Why the guide matters now

Officials have confirmed 41 screwworm cases this week in eight counties – Catron, Doña Ana, Grant, Hidalgo, Luna, Otero, Eddy and Sierra – while the national total stands at 121. The surge has prompted the New Mexico Livestock Board to tighten animal‑inspection and travel requirements in affected areas, aiming to curb further spread.

“The screwworm is rapidly evolving, and weather may be contributing to the growing number of cases,” said Caleb Hubbard, an assistant professor of Entomology, Plant Pathology and Weed Science at NMSU. Hubbard co‑authored the guide with colleagues Marcy Ward and Brandon Smythe. He added that cooler temperatures expected this fall and winter could help reduce infestations.

What the guide offers

The publication, titled “General New World Screwworm Biology and Identification,” provides clear photographs of real infections, detailed descriptions of the fly’s life cycle, and practical steps for detection and treatment. It is designed for farmers, ranchers, veterinarians and any New Mexico resident who may encounter the parasite.

Readers will learn how to recognize the characteristic warble lesions on animals, understand the fly’s breeding habits, and apply recommended control measures. The guide also outlines the state’s new inspection and travel protocols, directing owners to the official requirements page for the latest information.

How to access the guide

The guide is available at no cost online through NMSU’s Extension website. Interested parties can download the PDF directly or request a printed copy by contacting the university’s Extension office.

For detailed travel and inspection requirements, visit the New Mexico Livestock Board’s page at https://nmsu.news/NWS-Travel-Requirements. Staying informed and following the recommended practices can help protect New Mexico’s agricultural heritage and the health of its animals.

Original reporting: KOAT Albuquerque — read the source article.