Spider Venom vs Varroa — Hope With Both Eyes Open

Jamie Ellis covers a neat bit of research in the September 2026 American Bee Journal Classroom: spider venom peptides that kill Varroa on contact and leave the bees alone. That is the kind of headline that makes a Brazoria County beekeeper sit up at the kitchen table.

The work comes out of the University of the Sunshine Coast in Australia. Researchers screened about fifty arthropod venoms — mostly spiders and scorpions — by putting them on mites. More than three-quarters wiped the mites out within a day. From two strong spider venoms (Tasmanian cave spider and Giant Japanese funnel-web), they pulled short protein pieces called peptides — Ht1a and Gg1a. Topical on Varroa: mites die. Bees in the same tests: still flying. The peptides are biodegradable, which matters if you ever hope to spray something inside a hive.

Ellis is careful, and so am I. This is a lab start, not a jug on the feed-store shelf. Drug and treatment development eats years. The authors still need hive trials on bees that are actually carrying mites. Resistance already chewed through a lot of what we use; nobody needs another false dawn.

Out here on the Gulf Coast, Varroa is still the quiet killer that rides every season. I keep watching mite loads, treating when the numbers say so, and feeding the habit of checking — not waiting on a miracle peptide. Hope is fine. Hope with both eyes open is better.

Read Ellis in ABJ: The Classroom – September 2026. University press release: How spider venoms could stop deadly varroa mites. Paper: Herzig et al., npj Drug Discovery (2026), doi:10.1038/s44386-026-00050-9.

Back in the yard: month-by-month work and the rest of the journal.